The Po Valley, Po Plain, Plain of the Po, or Padan Plain ( it, Pianura Padana , or ''Val Padana'') is a major geographical feature of
Northern Italy
Northern Italy ( it, Italia settentrionale, it, Nord Italia, label=none, it, Alta Italia, label=none or just it, Nord, label=none) is a geographical and cultural region in the northern part of Italy. It consists of eight administrative regions ...
. It extends approximately in an east-west direction, with an area of including its
Venetic
Venetic is an extinct Indo-European language, usually classified into the Italic subgroup, that was spoken by the Veneti people in ancient times in northeast Italy ( Veneto and Friuli) and part of modern Slovenia, between the Po Delta an ...
extension not actually related to the
Po river basin; it runs from the Western
Alps
The Alps () ; german: Alpen ; it, Alpi ; rm, Alps ; sl, Alpe . are the highest and most extensive mountain range system that lies entirely in Europe, stretching approximately across seven Alpine countries (from west to east): France, Swi ...
to the
Adriatic Sea
The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkans, Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Sea) ...
. The flatlands of
Veneto
it, Veneto (man) it, Veneta (woman)
, population_note =
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and
Friuli
Friuli ( fur, Friûl, sl, Furlanija, german: Friaul) is an area of Northeast Italy with its own particular cultural and historical identity containing 1,000,000 Friulians. It comprises the major part of the autonomous region Friuli Venezia Giuli ...
are often considered apart since they do not drain into the Po, but they effectively combine into an unbroken plain, making it the largest in
Southern Europe
Southern Europe is the southern region of Europe. It is also known as Mediterranean Europe, as its geography is essentially marked by the Mediterranean Sea. Definitions of Southern Europe include some or all of these countries and regions: Alba ...
. It has a population of 17 million, or a third of Italy's total population.
The plain is the surface of an in-filled system of ancient canyons (the "Apennine Foredeep") extending from the
Apennines
The Apennines or Apennine Mountains (; grc-gre, links=no, Ἀπέννινα ὄρη or Ἀπέννινον ὄρος; la, Appenninus or – a singular with plural meaning;''Apenninus'' (Greek or ) has the form of an adjective, which wou ...
in the south to the Alps in the north, including the northern Adriatic. In addition to the Po and its affluents, the contemporary surface may be considered to include the
Savio,
Lamone and
Reno
Reno ( ) is a city in the northwest section of the U.S. state of Nevada, along the Nevada-California border, about north from Lake Tahoe, known as "The Biggest Little City in the World". Known for its casino and tourism industry, Reno is the ...
to the south, and the
Adige
The Adige (; german: Etsch ; vec, Àdexe ; rm, Adisch ; lld, Adesc; la, Athesis; grc, Ἄθεσις, Áthesis, or , ''Átagis'') is the second-longest river in Italy, after the Po. It rises near the Reschen Pass in the Vinschgau in the p ...
,
Brenta,
Piave and
Tagliamento
The Tagliamento () is a braided river in north-east Italy, flowing from the Alps to the Adriatic Sea at a point between Trieste and Venice.
The Tagliamento river is considered as the last morphologically intact river in the Alps. (Its ...
of the
Venetian Plain
The Venetian Plain, or Venetian-Friulian Plain ( it, Pianura Veneta or ) is a major geographical feature of Italy. It extends approximately from the River Adige to the River Isonzo, in a southwest-to-northeast direction, including almost all the ...
to the north, among the many streams that empty into the north Adriatic from the west and north.
Geo-political definitions of the valley depend on the defining authority. The Po Basin Water Board ('), authorized in 1989 by Law no. 183/89 to oversee "protection of lands, water rehabilitation, the use and management of hydro resources for the national economic and social development, and protection of related environment" within the Po basin, has authority in several administrative regions of north Italy, including the plain north of the Adriatic and the territory south of the lower Po, as shown in the regional depiction included with this article. The law defines the Po basin as "the territory from which rainwater or snow and glacier melt flows on the surface, gathers in streams of water either directly or via tributaries...". The United Nations Environment Program includes the Alps and Apennines as far as the sources of the tributaries of the Po but excludes Veneto and that portion of Emilia-Romagna south of the lower Po; that is, it includes the region drained by the Po but only the Po and its tributaries.
The altitude of the valley through which the Po flows, exclusive of its tributaries, varies from approximately below sea level in the
Polesine
Polesine (; vec, label=unified Venetian script, Połéxine ) is a geographic and historic area in the north-east of Italy whose limits varied through centuries; it had also been known as Polesine of Rovigo for some time.
Nowadays it corresponds ...
subregion (the
delta
Delta commonly refers to:
* Delta (letter) (Δ or δ), a letter of the Greek alphabet
* River delta, at a river mouth
* D ( NATO phonetic alphabet: "Delta")
* Delta Air Lines, US
* Delta variant of SARS-CoV-2 that causes COVID-19
Delta may also ...
around
Ferrara
Ferrara (, ; egl, Fràra ) is a city and ''comune'' in Emilia-Romagna, northern Italy, capital of the Province of Ferrara. it had 132,009 inhabitants. It is situated northeast of Bologna, on the Po di Volano, a branch channel of the main stre ...
) to about at the river's origin in the southern
Piedmont
it, Piemontese
, population_note =
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, demographics1_title2 ...
ese
province of Cuneo
Cuneo ( Italian), or Coni ( Piedmontese), is a province in the southwest of the Piedmont region of Italy. To the west it borders on the French region of Provence-Alpes-Côte d'Azur ( departments of Alpes-Maritimes, Alpes-de-Haute-Provence and Haut ...
, also known as the ''Provincia granda''. The valley is crossed by a number of
affluents running down from the Alps in the north and from the Apennines in the south. The Po's major affluents include the
Tanaro
The Tanaro (; pms, Tane ; ; la, Tanarus), is a long river in northwestern Italy. The river begins in the Ligurian Alps, near the border with France, and is the most significant right-side tributary to the Po in terms of length, size of dr ...
,
Scrivia
The Scrivia, long, is a right tributary of the river Po, in northern Italy. It runs through Liguria, Piedmont, and Lombardy.
Main tributaries
* left hand:
** torrente Laccio;
** torrente Busalletta;
** torrente Traversa;
** rio San Rocco;
* ...
,
Trebbia
The Trebbia (stressed ''Trèbbia''; la, Trebia) is a river predominantly of Liguria and Emilia Romagna in northern Italy. It is one of the four main right-bank tributaries of the river Po, the other three being the Tanaro, the Secchia and the ...
,
Panaro and
Secchia
The Secchia (; egl, Sècia; called by Pliny )''Naturalis Historia'', Book 3, chap. xvi. is an Italian river. One of the main right bank tributaries of the Po, it flows through the Emilia-Romagna region in northern Italy.
It is long, and has a ...
in the south,
Dora Riparia
The Dora Riparia (; pms, Dòira Rivaira; french: Doire Ripaire or ''Doire''; la, Duria minor) is an alpine river, a left-hand tributary of the Po. It is long (of which 5 km in France), with a drainage basin. It originates in the Cottian ...
,
Dora Baltea,
Sesia,
Ticino
Ticino (), sometimes Tessin (), officially the Republic and Canton of Ticino or less formally the Canton of Ticino,, informally ''Canton Ticino'' ; lmo, Canton Tesin ; german: Kanton Tessin ; french: Canton du Tessin ; rm, Chantun dal Tessin . ...
(draining
Lake Maggiore
Lake Maggiore (, ; it, Lago Maggiore ; lmo, label=Western Lombard, Lagh Maggior; pms, Lagh Magior; literally 'Greater Lake') or Verbano (; la, Lacus Verbanus) is a large lake located on the south side of the Alps. It is the second largest la ...
),
Lambro
The Lambro ( lmo, Lamber or ''Lambar'' ) is a river of Lombardy, northern Italy, a left tributary of the Po.
The Lambro rises from the Monte San Primo, elevation , near the Ghisallo, in the province of Como, not far from Lake Como. After Mag ...
,
Adda (draining
Lake Como
Lake Como ( it, Lago di Como , ; lmo, label= Western Lombard, Lagh de Còmm , ''Cómm'' or ''Cùmm'' ), also known as Lario (; after the la, Larius Lacus), is a lake of glacial origin in Lombardy, Italy. It has an area of , making it the thi ...
),
Oglio
The Oglio (; Latin ''Ollius'', or ''Olius''; Lombard ''Òi''; Cremonese ''Ùi'') is a left-side tributary of the river Po in Lombardy, Italy. It is long.
In the hierarchy of the Po's tributaries, with its of length, it occupies the 2nd plac ...
(draining
Lake Iseo
Lake Iseo or Iseo lake ( ; it, Lago d'Iseo ; lmo, Lach d'Izé, label= Eastern Lombard), also known as Sebino (; la, Sebinus), is the fourth largest lake in Lombardy, Italy, fed by the Oglio River.
It is in the north of the country in the Val ...
) and
Mincio
The Mincio (; Latin: Mincius, Ancient Greek: Minchios, ''Μίγχιος'', Lombard: Mens, Venetian: Menzo) is a river in the Lombardy region of northern Italy.
The river is the main outlet of Lake Garda. It is a part of the ''Sarca-Mincio'' ...
(draining
Lake Garda
Lake Garda ( it, Lago di Garda or ; lmo, label=Eastern Lombard, Lach de Garda; vec, Ƚago de Garda; la, Benacus; grc, Βήνακος) is the largest lake in Italy.
It is a popular holiday location in northern Italy, about halfway between ...
and called
Sarca in its upper reaches) in the north.
Geology
The Po Valley and the Adriatic overlay a
foreland basin
A foreland basin is a structural basin that develops adjacent and parallel to a mountain belt. Foreland basins form because the immense mass created by crustal thickening associated with the evolution of a mountain belt causes the lithospher ...
and a system of deeply buried ancient canyons surviving from the
tectonic
Tectonics (; ) are the processes that control the structure and properties of the Earth's crust and its evolution through time. These include the processes of mountain building, the growth and behavior of the strong, old cores of continents ...
collision of an offshore land mass, Tyrrhenis, with the mainland, an incident within the collision of the African and Eurasian plates. Since the
Messinian
The Messinian is in the geologic timescale the last age or uppermost stage of the Miocene. It spans the time between 7.246 ± 0.005 Ma and 5.333 ± 0.005 Ma (million years ago). It follows the Tortonian and is followed by the Zanclean, the fir ...
(7–5
mya) the system has been filling with sediment mainly from the older
Apennines
The Apennines or Apennine Mountains (; grc-gre, links=no, Ἀπέννινα ὄρη or Ἀπέννινον ὄρος; la, Appenninus or – a singular with plural meaning;''Apenninus'' (Greek or ) has the form of an adjective, which wou ...
but also from the Alps. The shoreline of the Adriatic depends on a balance between the sedimentation rate and
isostatic factors. Until about 1950, the Po delta was prograding into the Adriatic. After that time due to human alteration of geologic factors, such as the sedimentation rate, the delta has been degrading and the coastline subsiding, resulting in ongoing contemporaneous crises in the city of
Venice
Venice ( ; it, Venezia ; vec, Venesia or ) is a city in northeastern Italy and the capital of the Veneto region. It is built on a group of 118 small islands that are separated by canals and linked by over 400 bridges. The isl ...
, where much irreplaceable art and architecture is likely to be lost due to soaring sea level in the next centuries. Where the land surface now dips below sea level the river must run at a relative elevation between dikes.
The Malossa
gas condensate
Natural-gas condensate, also called natural gas liquids, is a low-density mixture of hydrocarbon liquids that are present as gaseous components in the raw natural gas produced from many natural gas fields. Some gas species within the raw natur ...
field was discovered in 1973 and produces at depths of from the Upper
Triassic
The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period ...
Dolomia Principale
dolomite and the Lower
Jurassic Zandobbio dolomite, capped by the Lower
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of ...
Marne di Bruntino
marl
Marl is an earthy material rich in carbonate minerals, clays, and silt. When hardened into rock, this becomes marlstone. It is formed in marine or freshwater environments, often through the activities of algae.
Marl makes up the lower part o ...
.
Geography
The Po Valley is often regarded as a
syncline
In structural geology, a syncline is a fold with younger layers closer to the center of the structure, whereas an anticline is the inverse of a syncline. A synclinorium (plural synclinoriums or synclinoria) is a large syncline with superimposed ...
, or dip in the crust due to compression at the edges. Regardless of whether this concept accurately describes its geology, the valley is manifestly a sediment-filled trough, or virtual syncline, continuous with the deeps of the
Adriatic Sea
The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkans, Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Sea) ...
. The surface terrain is therefore divided into two overall types of
landform
A landform is a natural or anthropogenic land feature on the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, m ...
: the plain, or flat surface of the fill, and the
anticline
In structural geology, an anticline is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is the inverse of an anticline. A typical anticline is convex up in which the hinge or crest is the ...
at the edges, taking the form of hilly country in which the
outcrop
An outcrop or rocky outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth.
Features
Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial ...
s of the original rock are visible along with
alluvial fan
An alluvial fan is an accumulation of sediments that fans outwards from a concentrated source of sediments, such as a narrow canyon emerging from an escarpment. They are characteristic of mountainous terrain in arid to semiarid climates, but a ...
s formed from the outwash of the more severe anticlinal terrain; that is, the Apennines and the Alps.
The valley is broadly divided into an upper, drier part, often not particularly suited for agriculture, and a lower, very fertile, and well-irrigated section, known in
Lombardy
(man), (woman) lmo, lumbard, links=no (man), (woman)
, population_note =
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, ...
and western
Emilia as ''la Bassa'', "the low (plain)". The upper areas of the Po valley take local names which reflect in their meanings their being modestly suited for farming. So we have the Piedmontese ''vaude'' and ''baragge'', the Lombard ''brughiere'' and ''Groane'', or, exiting from the Po valley proper, the
Friuli
Friuli ( fur, Friûl, sl, Furlanija, german: Friaul) is an area of Northeast Italy with its own particular cultural and historical identity containing 1,000,000 Friulians. It comprises the major part of the autonomous region Friuli Venezia Giuli ...
an ''magredi'', areas remote from easily reachable water tables and covered with dense woods or dry soils.
This specific meaning for "lower plain" derive from a geologic feature called the ''fontanili'' ("spring") line or zone, a band of springs around the Val Po, heaviest on the north, on the lowermost slopes of the anticline. It varies from a few kilometres to as much as wide. The fontanili line is the outcrop, or intersection, of the anticline's
water table
The water table is the upper surface of the zone of saturation. The zone of saturation is where the pores and fractures of the ground are saturated with water. It can also be simply explained as the depth below which the ground is saturated.
T ...
with the surface at the edge of the ''bassa''. The rock above the line is porous. Surface water in the
intermittent stream
Intermittent, temporary or seasonal rivers or streams cease to flow every year or at least twice every five years.(Tzoraki et al., 2007) Such rivers drain large arid and semi-arid areas, covering approximately a third of the earth's surface. ...
s of the mountains tends to disappear below ground only to spring out again in the spring zone. The spring zone is often called "the middle valley."
Surface runoff water (the Po and its affluents) is not of much value to the valley's dense population for drinking and other immediate uses, being unreliable, often destructive, and heavily polluted by sewage and fertilizers. Its main anthropic value is for hydro-electric power, irrigation, and industrial transport. The cost of purifying it for human consumption makes that process less feasible. The fresh drinking water comes from hundreds of thousands of wells concentrated especially in the fontanili zone. The major settlements, therefore, are also in that zone, which has become the centre of economic development and
industry
Industry may refer to:
Economics
* Industry (economics), a generally categorized branch of economic activity
* Industry (manufacturing), a specific branch of economic activity, typically in factories with machinery
* The wider industrial sector ...
in Italy, and now is an almost continuous
megalopolis
A megalopolis () or a supercity, also called a megaregion, is a group of metropolitan areas which are perceived as a continuous urban area through common systems of transport, economy, resources, ecology, and so on. They are integrated enoug ...
stretching from
Turin
Turin ( , Piedmontese: ; it, Torino ) is a city and an important business and cultural centre in Northern Italy. It is the capital city of Piedmont and of the Metropolitan City of Turin, and was the first Italian capital from 1861 to 1865. Th ...
to
Trieste
Trieste ( , ; sl, Trst ; german: Triest ) is a city and seaport in northeastern Italy. It is the capital city, and largest city, of the autonomous region of Friuli Venezia Giulia, one of two autonomous regions which are not subdivided into prov ...
.
The ''bassa Padana'' was settled and farmed earliest, in Etruscan and Roman times. After the collapse of the
Roman Empire
The Roman Empire ( la, Imperium Romanum ; grc-gre, Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn) was the post- Republican period of ancient Rome. As a polity, it included large territorial holdings around the Medit ...
(5th century AD), lack of maintenance of the irrigation systems associated with a cooling climate phase (i.e. the so-called Migration Period or The Dark Age Cold Period) led to the progressive waterlogging of the Po Valley and the natural depressions on the right side of the
Po River
The Po ( , ; la, Padus or ; Ancient Ligurian: or ) is the longest river in Italy. It flows eastward across northern Italy starting from the Cottian Alps. The river's length is either or , if the Maira, a right bank tributary, is included. Th ...
turned in vast swamp basins. The waterlogging process of the area continued until the 10th century influencing the human sustenance and settling practices. According to historical-archaeological data, indeed, the
wetland
A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free ( anoxic) processes prevailing, especially in the soils. T ...
s were exploited for fishing as well as for transport by boat while the
early medieval
The Early Middle Ages (or early medieval period), sometimes controversially referred to as the Dark Ages, is typically regarded by historians as lasting from the late 5th or early 6th century to the 10th century. They marked the start of the Mi ...
sites settled on the fluvial ridges, in topographically higher and strategic position in the surrounding swampy meadows.
The Po Valley has been completely turned to agriculture since the
Middle Ages
In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire ...
, when efforts from monastic orders, feudal lords and free
communes
An intentional community is a voluntary residential community which is designed to have a high degree of social cohesion and teamwork from the start. The members of an intentional community typically hold a common social, political, religious, ...
converged. The older and smaller cities deriving from ancient times are still located there.
According to historical maps and documents the land reclamation of the Po Valley reached its peak during the
Renaissance
The Renaissance ( , ) , from , with the same meanings. is a period in European history marking the transition from the Middle Ages to modernity and covering the 15th and 16th centuries, characterized by an effort to revive and surpass ide ...
(15th–16th centuries) and continued in the
Modern Age
The term modern period or modern era (sometimes also called modern history or modern times) is the period of history that succeeds the Middle Ages (which ended approximately 1500 AD). This terminology is a historical periodization that is applie ...
(17th–18th centuries), with the last marsh areas only being reclaimed in the 20th century: channels and drainage system are still active and allow the Po Valley to be drained and be cultivatable.
Climate and vegetation
The Po Valley has a range from
humid continental climate
A humid continental climate is a climatic region defined by Russo-German climatologist Wladimir Köppen in 1900, typified by four distinct seasons and large seasonal temperature differences, with warm to hot (and often humid) summers and freezin ...
(Köppen: ''Dfa'') to
humid subtropical
A humid subtropical climate is a zone of climate characterized by hot and humid summers, and cool to mild winters. These climates normally lie on the southeast side of all continents (except Antarctica), generally between latitudes 25° and 40° ...
(Köppen: ''Cfa''), or ''continental temperate'' (cool-humid with fog in winter and warm-moist in summer) climate in other classification. The conformation of the plain, surrounded by the
Alps
The Alps () ; german: Alpen ; it, Alpi ; rm, Alps ; sl, Alpe . are the highest and most extensive mountain range system that lies entirely in Europe, stretching approximately across seven Alpine countries (from west to east): France, Swi ...
and the
Apennines
The Apennines or Apennine Mountains (; grc-gre, links=no, Ἀπέννινα ὄρη or Ἀπέννινον ὄρος; la, Appenninus or – a singular with plural meaning;''Apenninus'' (Greek or ) has the form of an adjective, which wou ...
, and the influence of the
Adriatic Sea
The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkans, Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Sea) ...
cause high levels of
relative humidity
Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye. Humidity indicates the likelihood for precipitation, dew, or fog to be present.
Humidity depen ...
throughout the year. The climate of the Po Valley becomes increasingly warmer and more humid farther south and east.
Winters are cool and damp, with January mean temperatures ranging between (1981–2010 averages).
Fog
Fog is a visible aerosol consisting of tiny water droplets or ice crystals suspended in the air at or near the Earth's surface. Reprint from Fog can be considered a type of low-lying cloud usually resembling stratus, and is heavily inf ...
and
mist
Mist is a phenomenon caused by small droplets of water suspended in the cold air, usually by condensation. Physically, it is an example of a dispersion. It is most commonly seen where water vapor in warm, moist air meets sudden cooling, such a ...
are frequent, although the
urban heat effect has made winters less foggy and cold than before in some areas. Snow can occasionally occur and prolonged winter
droughts
A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D. Jiang, A. Khan, W. Pokam Mba, D. Rosenfeld, J. Tierney, an ...
increasingly deny sufficient moisture to the soil. Summers are hot and humid, with July mean temperatures ranging between (1971–2000 averages). Frequent
thunderstorms
A thunderstorm, also known as an electrical storm or a lightning storm, is a storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere, known as thunder. Relatively weak thunderstorms are someti ...
and sudden
hail
Hail is a form of solid precipitation. It is distinct from ice pellets (American English "sleet"), though the two are often confused. It consists of balls or irregular lumps of ice, each of which is called a hailstone. Ice pellets generally fal ...
storms have the potential to produce large hail, dump large quantities of rain, and be highly destructive to crops. The largest hail is produced by intense
supercell
A supercell is a thunderstorm characterized by the presence of a mesocyclone: a deep, persistently rotating updraft. Due to this, these storms are sometimes referred to as rotating thunderstorms. Of the four classifications of thunderstorms (s ...
thunderstorms, with significant agricultural costs.
Tornado
A tornado is a violently rotating column of air that is in contact with both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. It is often referred to as a twister, whirlwind or cyclone, altho ...
es are also not uncommon in the plains of the valley. For these climatological considerations the
Friuli Venezia Giulia
(man), it, Friulana (woman), it, Giuliano (man), it, Giuliana (woman)
, population_note =
, population_blank1_title =
, population_blank1 =
, demographics_type1 =
, demographics1_footnotes =
, demographics1_t ...
is an important extension beyond the Po River plain itself, as these are situated downwind of the mountains and upwind of moisture sources from nearby seas. Spring and autumn are well-marked and pleasant. Both winter and summer are less mild in the lower parts along the Po, while the
Adriatic Sea
The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkans, Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Sea) ...
and the great lakes moderate the local climate in their proximity.
Rainfall varies between and is equally distributed during the year, though in recent years the climate tends to become somewhat drier, especially in summer. Rainfall maximums are reached during autumn and spring. Winds are usually weak, although sudden bursts of
foehn
A Foehn or Föhn (, , ), is a type of dry, relatively warm, downslope wind that occurs in the lee (downwind side) of a mountain range.
It is a rain shadow wind that results from the subsequent adiabatic warming of air that has dropped most of i ...
or thunderstorms can sweep the air clean. The almost enclosed nature of the Padan basin, indeed, added to the crushing weight of road traffic, makes it prone to a high level of pollution in winter,
when cold air clings to the soil. The natural potential
vegetation of the Po basin is a mixed broadleaf forest of
pedunculate oak
''Quercus robur'', commonly known as common oak, pedunculate oak, European oak or English oak, is a species of flowering plant in the beech and oak family, Fagaceae. It is a large tree, native to most of Europe west of the Caucasus. It is wid ...
,
poplars,
European hornbeam,
alders,
elderberry
''Sambucus'' is a genus of flowering plants in the family Adoxaceae. The various species are commonly called elder or elderberry. The genus was formerly placed in the honeysuckle family, Caprifoliaceae, but was reclassified as Adoxaceae due to ...
,
elms,
willows
Willows, also called sallows and osiers, from the genus ''Salix'', comprise around 400 speciesMabberley, D.J. 1997. The Plant Book, Cambridge University Press #2: Cambridge. of typically deciduous trees and shrubs, found primarily on moist s ...
,
maples,
ash, and other central-European trees. The largest remaining fragments of forest are located around the Ticino River and are protected by a Biosphere Reserve.
History
Prehistory and antiquity
The Po Valley has had traces of inhabitation since at least 780,000 years ago, when the first big glaciation of pleistocene took place. Sites like Monte Poggiolo may have served as refuges of human populations fleeing the terribly cold conditions of northern Europe during the subsequent glaciations along pleistocene. The valley was covered by sea level in warm times, but glaciations could cause a lower sea level that allowed big mammals and humans to migrate from Africa and the Middle East to central and western Europe through an empty and open Po valley, avoiding the barrier of the Alps, reaching the Loire Valley, and Iberian Peninsula, and then, when glaciation retreated, the rest of continental Europe.
Urban development began in the Po Valley much later than in southern Italy or Greece. The first known ancient inhabitants of the thick forests and swamps were the
Ligurians
The Ligures (singular Ligur; Italian: liguri; English: Ligurians) were an ancient people after whom Liguria, a region of present-day north-western Italy, is named.
Ancient Liguria corresponded more or less to the current Italian regi ...
, an
Indo-European
The Indo-European languages are a language family native to the overwhelming majority of Europe, the Iranian plateau, and the northern Indian subcontinent. Some European languages of this family, English, French, Portuguese, Russian, Dutc ...
people. After the progressive immigration in the 7th century BC of
Celtic peoples known as the
Insubres
The Insubres or Insubri were an ancient Celtic population settled in Insubria, in what is now the Italian region of Lombardy. They were the founders of Mediolanum (Milan). Though completely Gaulish at the time of Roman conquest, they were the re ...
(hence the name of
Insubria
Insubria ( Lombard: ''Insübria'') is a historical-geographical region which corresponds to the area inhabited in Classical antiquity by the Insubres; the name can also refer to the Duchy of Milan (1395–1810). For several centuries this name sto ...
sometimes being given to northwestern
Lombardy
(man), (woman) lmo, lumbard, links=no (man), (woman)
, population_note =
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), the southern and central regions were conquered and colonised here and there by a
pre-Indo-European people, the
Etruscans
The Etruscan civilization () was developed by a people of Etruria in ancient Italy with a common language and culture who formed a federation of city-states. After conquering adjacent lands, its territory covered, at its greatest extent, rough ...
, who left names such as
Parma
Parma (; egl, Pärma, ) is a city in the northern Italian region of Emilia-Romagna known for its architecture, Giuseppe Verdi, music, art, prosciutto (ham), Parmigiano-Reggiano, cheese and surrounding countryside. With a population of 198,292 ...
,
Ravenna
Ravenna ( , , also ; rgn, Ravèna) is the capital city of the Province of Ravenna, in the Emilia-Romagna region of Northern Italy. It was the capital city of the Western Roman Empire from 408 until its collapse in 476. It then served as the c ...
and Felsina, the ancient name of
Bologna
Bologna (, , ; egl, label= Emilian, Bulåggna ; lat, Bononia) is the capital and largest city of the Emilia-Romagna region in Northern Italy. It is the seventh most populous city in Italy with about 400,000 inhabitants and 150 different nat ...
. The Etruscan domination left significant marks and introduced urban civilisation, but was short-lived.
Its inhabitants, the
Venetics, likely being a distinct group who, being skillful merchants, were, in time, also culturally influenced by both
Etruscans
The Etruscan civilization () was developed by a people of Etruria in ancient Italy with a common language and culture who formed a federation of city-states. After conquering adjacent lands, its territory covered, at its greatest extent, rough ...
and
Greeks
The Greeks or Hellenes (; el, Έλληνες, ''Éllines'' ) are an ethnic group and nation indigenous to the Eastern Mediterranean and the Black Sea regions, namely Greece, Cyprus, Albania, Italy, Turkey, Egypt, and, to a lesser extent, o ...
.
By 196 BC, Rome was master of the woody plains and soon displaced the Etruscans, dotting the region with bustling colonies, clearing the land, fighting the last rebel tribes and gradually imposing its own civilisation.
Middle Ages
The
Gothic War and
Justinian's plague devastated the Padan population. In this scenario of desolation, from which many people had fled to the mountains for safety (making them fairly populated till the 20th century) came the
Germanic Lombards, a warrior people who gave their name to almost the whole of the Po valley:
Lombardy
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, population_note =
, population_blank1_title =
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. In the Middle Ages the term was used to indicate all of northern Italy. The Lombards divided their domain in
duchies
A duchy, also called a dukedom, is a medieval country, territory, fief, or domain ruled by a duke or duchess, a ruler hierarchically second to the king or queen in Western European tradition.
There once existed an important difference between ...
, often contending for the throne;
Turin
Turin ( , Piedmontese: ; it, Torino ) is a city and an important business and cultural centre in Northern Italy. It is the capital city of Piedmont and of the Metropolitan City of Turin, and was the first Italian capital from 1861 to 1865. Th ...
and Friuli, in the extreme west and east end respectively, seem to have been the most powerful, whereas the capital soon shifted from
Verona to
Pavia
Pavia (, , , ; la, Ticinum; Medieval Latin: ) is a town and comune of south-western Lombardy in northern Italy, south of Milan on the lower Ticino river near its confluence with the Po. It has a population of c. 73,086. The city was the capit ...
.
Monza
Monza (, ; lmo, label= Lombard, Monça, locally ; lat, Modoetia) is a city and ''comune'' on the River Lambro, a tributary of the Po in the Lombardy region of Italy, about north-northeast of Milan. It is the capital of the Province of Mon ...
also was an important town in that time, more so than ruined
Milan
Milan ( , , Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city ...
. The Lombards' harsh,
caste
Caste is a form of social stratification characterised by endogamy, hereditary transmission of a style of life which often includes an occupation, ritual status in a hierarchy, and customary social interaction and exclusion based on cultura ...
-like rule over the natives softened somewhat with their conversion from
Arianism
Arianism ( grc-x-koine, Ἀρειανισμός, ) is a Christological doctrine first attributed to Arius (), a Christian presbyter from Alexandria, Egypt. Arian theology holds that Jesus Christ is the Son of God, who was begotten by God ...
to
Catholicism
The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...
.
The
Lombard kingdom
The Kingdom of the Lombards ( la, Regnum Langobardorum; it, Regno dei Longobardi; lmo, Regn di Lombard) also known as the Lombard Kingdom; later the Kingdom of (all) Italy ( la, Regnum totius Italiae), was an early medieval state established ...
was overthrown in 774 by
Charlemagne
Charlemagne ( , ) or Charles the Great ( la, Carolus Magnus; german: Karl der Große; 2 April 747 – 28 January 814), a member of the Carolingian dynasty, was King of the Franks from 768, King of the Lombards from 774, and the first E ...
and his
Frankish
Frankish may refer to:
* Franks, a Germanic tribe and their culture
** Frankish language or its modern descendants, Franconian languages
* Francia, a post-Roman state in France and Germany
* East Francia, the successor state to Francia in Germany ...
armies, becoming a prized part of the
Carolingian Empire
The Carolingian Empire (800–888) was a large Frankish-dominated empire in western and central Europe during the Early Middle Ages. It was ruled by the Carolingian dynasty, which had ruled as kings of the Franks since 751 and as kings of the ...
, forming the
kingdom of Italy
The Kingdom of Italy ( it, Regno d'Italia) was a state that existed from 1861, when Victor Emmanuel II of Sardinia was proclaimed King of Italy, until 1946, when civil discontent led to an institutional referendum to abandon the monarchy and ...
, always with its capital in Pavia. The affirmation of large landownership from the eighth/ninth centuries accelerated the process of land reclamation and intensified land use, transforming the landscape of the Po Valley. After the chaotic feudal dissolution of the empire and much fighting among pretenders to the imperial crown,
Otto I
Otto I (23 November 912 – 7 May 973), traditionally known as Otto the Great (german: Otto der Große, it, Ottone il Grande), was East Frankish king from 936 and Holy Roman Emperor from 962 until his death in 973. He was the oldest son of Hen ...
of
Saxony
Saxony (german: Sachsen ; Upper Saxon: ''Saggsn''; hsb, Sakska), officially the Free State of Saxony (german: Freistaat Sachsen, links=no ; Upper Saxon: ''Freischdaad Saggsn''; hsb, Swobodny stat Sakska, links=no), is a landlocked state o ...
set the stage for the following phase of the region's history by adding the Po Valley to the
Holy Roman Empire
The Holy Roman Empire was a political entity in Western, Central, and Southern Europe that developed during the Early Middle Ages and continued until its dissolution in 1806 during the Napoleonic Wars.
From the accession of Otto I in 962 ...
of the Germanic nation in 962. In
Veneto
it, Veneto (man) it, Veneta (woman)
, population_note =
, population_blank1_title =
, population_blank1 =
, demographics_type1 =
, demographics1_footnotes =
, demographics1_title1 =
, demographics1_info1 = ...
, the lagoon capital of
Venice
Venice ( ; it, Venezia ; vec, Venesia or ) is a city in northeastern Italy and the capital of the Veneto region. It is built on a group of 118 small islands that are separated by canals and linked by over 400 bridges. The isl ...
, emerged a great sea power in alliance with its old master, the
Byzantine Empire
The Byzantine Empire, also referred to as the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinopl ...
. In time the
Comuni
The (; plural: ) is a local administrative division of Italy, roughly equivalent to a township or municipality. It is the third-level administrative division of Italy, after regions ('' regioni'') and provinces (''province''). The can also ...
emerged, as towns thrived in commerce. Soon
Milan
Milan ( , , Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city ...
became the most powerful city of the central plain of Lombardy proper, and despite being razed in 1162, it was a Milan-driven
Lombard League with
Papal
The pope ( la, papa, from el, πάππας, translit=pappas, 'father'), also known as supreme pontiff ( or ), Roman pontiff () or sovereign pontiff, is the bishop of Rome (or historically the patriarch of Rome), head of the worldwide Cathol ...
benediction that defeated emperor
Frederick Barbarossa
Frederick Barbarossa (December 1122 – 10 June 1190), also known as Frederick I (german: link=no, Friedrich I, it, Federico I), was the Holy Roman Emperor from 1155 until his death 35 years later. He was elected King of Germany in Frankfurt on ...
at the
Battle of Legnano
The Battle of Legnano was a battle between the imperial army of Frederick Barbarossa and the troops of the Lombard League on May 29, 1176, near the town of Legnano in present-day Lombardy, in Italy. Although the presence of the enemy nearby wa ...
in 1176.
Between the 10th and 13th centuries, concurrent with the
Medieval Warm Period
The Medieval Warm Period (MWP), also known as the Medieval Climate Optimum or the Medieval Climatic Anomaly, was a time of warm climate in the North Atlantic region that lasted from to . Climate proxy records show peak warmth occurred at diffe ...
climate phase, the European population grew substantially, almost tripling (in Northern and Central Italy, the urban population doubled), and increasing the demand for cultivated lands. Cereals became a more significant constituent in the average diet and in the agrarian regime compared to the centuries before, leading populations to reconfigure the medieval natural landscape for agricultural purposes. In creating new land for cultivation and settlement, the European communities triggered a massive landscape transformation through woodland clearance, arable intensification, the development of irrigation systems and the drainage of wetlands. Land reclamations works profoundly modified many European regions. In Central Po Plain the earliest evidence of attempts to clear the forests and drain the wetlands is mentioned in historical documents from the late 8th century, but only from the 10th to 13th centuries were land and water management activities actually carried out widely.
Further civil wars escalated in the
Guelph-Ghibelline reciprocate bloodbath of the 13th and 14th centuries. The Signorie came from spent out Communal institutions. With
Venice
Venice ( ; it, Venezia ; vec, Venesia or ) is a city in northeastern Italy and the capital of the Veneto region. It is built on a group of 118 small islands that are separated by canals and linked by over 400 bridges. The isl ...
's expansion on the eastern mainland in the first half of the 15th century and
Milan
Milan ( , , Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city ...
's supremacy in the center and west the region (not significantly diminished by the
Black Death
The Black Death (also known as the Pestilence, the Great Mortality or the Plague) was a bubonic plague pandemic occurring in Western Eurasia and North Africa from 1346 to 1353. It is the most fatal pandemic recorded in human history, cau ...
of 1348) reached unprecedented peaks of prosperity. Vast areas were irrigated and cultivated with the most modern techniques available. The population averaged some 50 people per square kilometer, a very high standard for those times.
Early modern
In 1494, the ruinous
Italian Wars
The Italian Wars, also known as the Habsburg–Valois Wars, were a series of conflicts covering the period 1494 to 1559, fought mostly in the Italian peninsula, but later expanding into Flanders, the Rhineland and the Mediterranean Sea. The pr ...
began between
France and
Spain
, image_flag = Bandera de España.svg
, image_coat = Escudo de España (mazonado).svg
, national_motto = '' Plus ultra'' (Latin)(English: "Further Beyond")
, national_anthem = (English: "Royal March")
, ...
, which lasted for decades. Land changed hands frequently. Even
Switzerland
). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...
received some Italian-speaking lands in the north (
Canton Ticino
Ticino (), sometimes Tessin (), officially the Republic and Canton of Ticino or less formally the Canton of Ticino,, informally ''Canton Ticino'' ; lmo, Canton Tesin ; german: Kanton Tessin ; french: Canton du Tessin ; rm, Chantun dal Tessin . ...
, not technically a part of the Padan region), and the
Venetian domain was invaded, forcing
Venice
Venice ( ; it, Venezia ; vec, Venesia or ) is a city in northeastern Italy and the capital of the Veneto region. It is built on a group of 118 small islands that are separated by canals and linked by over 400 bridges. The isl ...
into neutrality as an independent power. In the end, Spain prevailed with
Charles V Charles V may refer to:
* Charles V, Holy Roman Emperor (1500–1558)
* Charles V of Naples (1661–1700), better known as Charles II of Spain
* Charles V of France (1338–1380), called the Wise
* Charles V, Duke of Lorraine (1643–1690)
* Inf ...
's victory over
Francis I of France
Francis I (french: François Ier; frm, Francoys; 12 September 1494 – 31 March 1547) was King of France from 1515 until his death in 1547. He was the son of Charles, Count of Angoulême, and Louise of Savoy. He succeeded his first cousin onc ...
at the
Battle of Pavia
The Battle of Pavia, fought on the morning of 24 February 1525, was the decisive engagement of the Italian War of 1521–1526 between the Kingdom of France and the Habsburg empire of Charles V, Holy Roman Emperor as well as ruler of Spain, A ...
in 1525.
The
Spanish
Spanish might refer to:
* Items from or related to Spain:
**Spaniards are a nation and ethnic group indigenous to Spain
**Spanish language, spoken in Spain and many Latin American countries
**Spanish cuisine
Other places
* Spanish, Ontario, Can ...
domination was oppressive, adding its burden to the
Counterreformation imposed by the
archbishopric of Milan;
Protestantism
Protestantism is a Christian denomination, branch of Christianity that follows the theological tenets of the Reformation, Protestant Reformation, a movement that began seeking to reform the Catholic Church from within in the 16th century agai ...
was prevented from making inroads in the area.
Burning at the stake became common practice during
witchhunts, especially in the neighboring Alpine lands. During this bleak period, however, Lombard
industry
Industry may refer to:
Economics
* Industry (economics), a generally categorized branch of economic activity
* Industry (manufacturing), a specific branch of economic activity, typically in factories with machinery
* The wider industrial sector ...
recovered, especially the
textile
Textile is an umbrella term that includes various fiber-based materials, including fibers, yarns, filaments, threads, different fabric types, etc. At first, the word "textiles" only referred to woven fabrics. However, weaving is not t ...
branch, its pillar.
When the
War of Spanish Succession
The War of the Spanish Succession was a European great power conflict that took place from 1701 to 1714. The death of childless Charles II of Spain in November 1700 led to a struggle for control of the Spanish Empire between his heirs, Ph ...
traded
Milan
Milan ( , , Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city ...
to
Austria
Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populou ...
, government and administration improved significantly. Though the peasantry began a century-long plunge into misery, cities prospered and grew.
When
Napoleon I
Napoleon Bonaparte ; it, Napoleone Bonaparte, ; co, Napulione Buonaparte. (born Napoleone Buonaparte; 15 August 1769 – 5 May 1821), later known by his regnal name Napoleon I, was a French military commander and political leader wh ...
entered the Po Valley during some of his brightest campaigns (1796 and 1800, culminating in the historical
Battle of Marengo
The Battle of Marengo was fought on 14 June 1800 between French forces under the First Consul Napoleon Bonaparte and Austrian forces near the city of Alessandria, in Piedmont, Italy. Near the end of the day, the French overcame General M ...
), he found an advanced country and made it into his
Kingdom of Italy
The Kingdom of Italy ( it, Regno d'Italia) was a state that existed from 1861, when Victor Emmanuel II of Sardinia was proclaimed King of Italy, until 1946, when civil discontent led to an institutional referendum to abandon the monarchy and ...
. With Napoleon's final defeat the Austrians came back, but they were no longer welcome. In the west, in
Piedmont
it, Piemontese
, population_note =
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, population_blank1 =
, demographics_type1 =
, demographics1_footnotes =
, demographics1_title1 =
, demographics1_info1 =
, demographics1_title2 ...
, the
Savoy dynasty would emerge to serve as a springboard for Italian unification.
Late modern and contemporary
The
Risorgimento
The unification of Italy ( it, Unità d'Italia ), also known as the ''Risorgimento'' (, ; ), was the 19th-century political and social movement that resulted in the consolidation of different states of the Italian Peninsula into a single ...
, after an unsuccessful start in 1848 and 1849, triumphed ten years later in
Lombardy
(man), (woman) lmo, lumbard, links=no (man), (woman)
, population_note =
, population_blank1_title =
, population_blank1 =
, demographics_type1 =
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, ...
, which was conquered by a Franco-Piedmontese army. In 1866
Veneto
it, Veneto (man) it, Veneta (woman)
, population_note =
, population_blank1_title =
, population_blank1 =
, demographics_type1 =
, demographics1_footnotes =
, demographics1_title1 =
, demographics1_info1 = ...
joined young Italy, thanks to
Prussia
Prussia, , Old Prussian: ''Prūsa'' or ''Prūsija'' was a German state on the southeast coast of the Baltic Sea. It formed the German Empire under Prussian rule when it united the German states in 1871. It was '' de facto'' dissolved by an ...
's defeat of
Austria
Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populou ...
. Poverty in the countryside increased emigration to the
Americas
The Americas, which are sometimes collectively called America, are a landmass comprising the totality of North and South America. The Americas make up most of the land in Earth's Western Hemisphere and comprise the New World.
Along with t ...
, a phenomenon which subsided in the central region towards the end of the 19th century, but persisted in
Veneto
it, Veneto (man) it, Veneta (woman)
, population_note =
, population_blank1_title =
, population_blank1 =
, demographics_type1 =
, demographics1_footnotes =
, demographics1_title1 =
, demographics1_info1 = ...
well into the 20th century. Industry grew rapidly, thanks to an abundance of water and literate manpower.
The
World Wars
A world war is an international conflict which involves all or most of the world's major powers. Conventionally, the term is reserved for two major international conflicts that occurred during the first half of the 20th century, World WarI (1914 ...
did not significantly damage the area, despite the destruction caused by
Allied aerial bombing of many cities and heavy frontline fighting in
Romagna
Romagna ( rgn, Rumâgna) is an Italian historical region that approximately corresponds to the south-eastern portion of present-day Emilia-Romagna, North Italy. Traditionally, it is limited by the Apennines to the south-west, the Adriatic to t ...
. The
Resistance protected the main industries, which the
Third Reich
Nazi Germany (lit. "National Socialist State"), ' (lit. "Nazi State") for short; also ' (lit. "National Socialist Germany") (officially known as the German Reich from 1933 until 1943, and the Greater German Reich from 1943 to 1945) was ...
was using for war production, preventing their destruction: on 25 April 1945 a general insurrection in the wake of the German defeat was a huge success. Most cities and towns, notably Milan and Turin, were freed by the partisans days before the Allies arrived.
After the war, the Padan area took the lead in the
economic miracle
Economic miracle is an informal economic term for a period of dramatic economic development that is entirely unexpected or unexpectedly strong. Economic miracles have occurred in the recent histories of a number of countries, often those undergoing ...
of the 1950s and 60s. Since 1989,
Lega Nord
Lega Nord (; acronym: LN), whose complete name is (), is a right-wing, federalist, populist and conservative political party in Italy. In the run-up of the 2018 general election, the party was rebranded as (), without changing its official n ...
, a federation of Northern regionalist parties, has promoted either
secession
Secession is the withdrawal of a group from a larger entity, especially a political entity, but also from any organization, union or military alliance. Some of the most famous and significant secessions have been: the former Soviet republics le ...
or larger
autonomy
In developmental psychology and moral, political, and bioethical philosophy, autonomy, from , ''autonomos'', from αὐτο- ''auto-'' "self" and νόμος ''nomos'', "law", hence when combined understood to mean "one who gives oneself one's ow ...
for the Padan area which they call ''
Padania
Padania (, also , ) is an alternative name and proposed independent state encompassing Northern Italy, derived from the name of the Po River (Latin ''Padus''), whose basin includes much of the region, centered on the Po Valley (), the major plain ...
''.
Economy
The Po Valley is one of the most important industrial and agricultural areas in Europe. Hydroelectricity is produced by the flow of the Po. The river is extensively used for irrigation for the region's agriculture.
Pollution
Po valley is considered the worst area in Europe for air quality. In March 2019, the
European Space Agency
, owners =
, headquarters = Paris, Île-de-France, France
, coordinates =
, spaceport = Guiana Space Centre
, seal = File:ESA emblem seal.png
, seal_size = 130px
, image = Views in the Main Control Room (120 ...
(ESA) published images of
nitrogen dioxide
Nitrogen dioxide is a chemical compound with the formula . It is one of several nitrogen oxides. is an intermediate in the industrial synthesis of nitric acid, millions of tons of which are produced each year for use primarily in the producti ...
concentrations taken from the
Sentinel-5P
Sentinel-5 Precursor (Sentinel-5P) is an Earth observation satellite developed by ESA as part of the Copernicus Programme to close the gap in continuity of observations between Envisat and Sentinel-5.
Overview
Sentinel-5 Precursor is the first ...
satellite. These images show a big red area, made of nitrogen dioxide and fine particles, situated above the Po Valley area, which incorporates the city of
Milan
Milan ( , , Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city ...
,
Turin
Turin ( , Piedmontese: ; it, Torino ) is a city and an important business and cultural centre in Northern Italy. It is the capital city of Piedmont and of the Metropolitan City of Turin, and was the first Italian capital from 1861 to 1865. Th ...
, and
Bologna
Bologna (, , ; egl, label= Emilian, Bulåggna ; lat, Bononia) is the capital and largest city of the Emilia-Romagna region in Northern Italy. It is the seventh most populous city in Italy with about 400,000 inhabitants and 150 different nat ...
. Milan and Turin share high levels of
ozone
Ozone (), or trioxygen, is an inorganic molecule with the chemical formula . It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope , breaking down in the lowe ...
and
nitrogen oxides Nitrogen oxide may refer to a binary compound of oxygen and nitrogen, or a mixture of such compounds:
Charge-neutral
*Nitric oxide (NO), nitrogen(II) oxide, or nitrogen monoxide
* Nitrogen dioxide (), nitrogen(IV) oxide
*Nitrogen trioxide (), or ...
, which are mainly produced by cars' diesel and petrol engines. To shed light on the danger for humans living polluted environments, Chicago Energy Policy Institute has developed the Air Quality Life Index (AQLI), a system capable of analyzing air pollution worldwide. According to AQLI findings, Po valley air pollution affects inhabitants so hard that it cuts off about half a year of their life expectancy. The main reasons for the high amount of air pollution over the Po valley are strictly connected to livestock and factories. The so-called "NPK fertilizers", made of nitrogen, phosphorus and potassium, along with manure emissions from intensive breeding and high levels of nitrogen dioxide released by diesel and petrol engines are all accountable for this disastrous air condition in Northern Italy. The region of
Lombardy
(man), (woman) lmo, lumbard, links=no (man), (woman)
, population_note =
, population_blank1_title =
, population_blank1 =
, demographics_type1 =
, demographics1_footnotes =
, demographics1_title1 =
, ...
produces also vast amounts of animal waste, a big contributor to pollution. It delivers more than 40 percent of Italy's milk production, for example, while over half of the Italian pig production is located in the Po Valley.
According to research published in
The Lancet
''The Lancet'' is a weekly peer-reviewed general medical journal and one of the oldest of its kind. It is also the world's highest-impact academic journal. It was founded in England in 1823.
The journal publishes original research articles ...
Planetary Health
in January 2021, which estimates the death rate associated with fine particulate matter (PM
2.5) and nitrogen dioxide (NO
2) pollution in 1000 European cities,
Brescia
Brescia (, locally ; lmo, link=no, label= Lombard, Brèsa ; lat, Brixia; vec, Bressa) is a city and ''comune'' in the region of Lombardy, Northern Italy. It is situated at the foot of the Alps, a few kilometers from the lakes Garda and Ise ...
and
Bergamo
Bergamo (; lmo, Bèrghem ; from the proto- Germanic elements *''berg +*heim'', the "mountain home") is a city in the alpine Lombardy region of northern Italy, approximately northeast of Milan, and about from Switzerland, the alpine lakes Co ...
in
Lombardy
(man), (woman) lmo, lumbard, links=no (man), (woman)
, population_note =
, population_blank1_title =
, population_blank1 =
, demographics_type1 =
, demographics1_footnotes =
, demographics1_title1 =
, ...
have the highest death rate from fine particulate matter (PM
2.5) in Europe.
Vicenza (
Veneto
it, Veneto (man) it, Veneta (woman)
, population_note =
, population_blank1_title =
, population_blank1 =
, demographics_type1 =
, demographics1_footnotes =
, demographics1_title1 =
, demographics1_info1 = ...
) and
Saronno
Saronno (; lmo, Saronn ) is a ''comune'' of Lombardy, Italy, in the province of Varese. It received the honorary title of city with a presidential decree in 1960. With an estimated population of 39,351 inhabitants, it is the most densely populated ...
(Lombardy) are in fourth and eighth place, respectively, in a top ten of ten cities.
Turin
Turin ( , Piedmontese: ; it, Torino ) is a city and an important business and cultural centre in Northern Italy. It is the capital city of Piedmont and of the Metropolitan City of Turin, and was the first Italian capital from 1861 to 1865. Th ...
and
Milan
Milan ( , , Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city ...
are also at the top of the European ranking – 3rd and 5th respectively – in terms of increased mortality from nitrogen dioxide, a gas that is produced mainly from traffic and in particular from diesel vehicles, while
Verona,
Treviso
Treviso ( , ; vec, Trevixo) is a city and ''comune'' in the Veneto region of northern Italy. It is the capital of the province of Treviso and the municipality has 84,669 inhabitants (as of September 2017). Some 3,000 live within the Veneti ...
,
Padova
Padua ( ; it, Padova ; vec, Pàdova) is a city and '' comune'' in Veneto, northern Italy. Padua is on the river Bacchiglione, west of Venice. It is the capital of the province of Padua. It is also the economic and communications hub of t ...
,
Como
Como (, ; lmo, Còmm, label=Comasco , or ; lat, Novum Comum; rm, Com; french: Côme) is a city and ''comune'' in Lombardy, Italy. It is the administrative capital of the Province of Como.
Its proximity to Lake Como and to the Alps has m ...
and
Venice
Venice ( ; it, Venezia ; vec, Venesia or ) is a city in northeastern Italy and the capital of the Veneto region. It is built on a group of 118 small islands that are separated by canals and linked by over 400 bridges. The isl ...
rank eleventh, fourteenth, fifteenth, seventeenth and twenty-third respectively.
The data show that many cities in the Po Valley suffer the most serious impact at European level due to poor air quality, first of all the metropolitan area of Milan, thirteenth in the ranking in terms of fine particulate impact, where any year 3967 premature deaths occur – approximately 9% of the total.
References
External links
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{{Authority control
Geographical, historical and cultural regions of Italy
Plains of Italy
Landforms of Piedmont
Landforms of Lombardy
Landforms of Emilia-Romagna
Landforms of Veneto