, image =Terai nepal.jpg , image_size = , image_alt = , caption =Aerial view of Terai plains near Biratnagar, Nepal , map = , map_size = , map_alt = , map_caption = , biogeographic_realm =

Indomalayan realm The Indomalayan realm is one of the eight biogeographic realms. It extends across most of South and Southeast Asia and into the southern parts of East Asia. Also called the Oriental realm by biogeographers, Indomalaya spreads all over the Indi ...

, global200 = Terai-Duar savanna and grasslands , countries =Nepal, India , elevation = , soil = alluvial , rivers =

Sharda River The Sharda River, also called Kali River and Mahakali River, originates at Kalapani in the Himalayas at an elevation of in the Pithoragarh district in Uttarakhand, India. It flows along Nepal's western border with India and has a basin area ...

Karnali River Karnali may refer to: Places in Nepal * Karnali Bridge, a bridge over the Karnali River in Nepal * Karnali Highway, a vital transport link in Nepal * Karnali Province, a federal province in Nepal * Karnali River, a river in Nepal and India origin ...

Gandaki River The Gandaki River, also known as the Narayani and the Gandak, is one of the major rivers in Nepal and a left bank tributary of the Ganges in India. Its total catchment area amounts to , most of it in Nepal. In the Nepal Himalayas, it is notab ...

, Koshi River , climate = tropical savanna climate , animals = gharial,

mugger crocodile The mugger crocodile (''Crocodylus palustris'') is a medium-sized broad- snouted crocodile, also known as mugger and marsh crocodile. It is native to freshwater habitats from southern Iran to the Indian subcontinent, where it inhabits marshes ...

, king cobra , bird_species =

Bengal florican The Bengal florican (''Houbaropsis bengalensis''), also called the Bengal bustard, is a bustard species native to the Indian subcontinent, Cambodia, and Vietnam. It is listed as Critically Endangered on the IUCN Red List because fewer than 1,00 ...

lesser adjutant The lesser adjutant (''Leptoptilos javanicus'') is a large wading bird in the stork family Ciconiidae. Like other members of its genus, it has a bare neck and head. It is however more closely associated with wetland habitats where it is solitary ...

swamp francolin The swamp francolin (''Ortygornis gularis''), also called swamp partridge, is a francolin species native to the foothills of the Himalayas in northern India and Nepal. It is considered extinct in the Ganges-Brahmaputra delta in Bangladesh. It is ...

white-rumped vulture The white-rumped vulture (''Gyps bengalensis'') is an Old World vulture native to South and Southeast Asia. It has been listed as Critically Endangered on the IUCN Red List since 2000, as the population severely declined. White-rumped vultures d ...

Oriental darter The Oriental darter (''Anhinga melanogaster'') is a water bird of tropical South Asia and Southeast Asia. It has a long and slender neck with a straight, pointed bill and, like the cormorant, it hunts for fish while its body is submerged in water ...

, sarus crane , mammal_species =

Indian rhinoceros } The Indian rhinoceros (''Rhinoceros unicornis''), also called the Indian rhino, greater one-horned rhinoceros or great Indian rhinoceros, is a rhinoceros species native to the Indian subcontinent. It is listed as Vulnerable on the IUCN Red Li ...

Asian elephant The Asian elephant (''Elephas maximus''), also known as the Asiatic elephant, is the only living species of the genus ''Elephas'' and is distributed throughout the Indian subcontinent and Southeast Asia, from India in the west, Nepal in the no ...

gaur The gaur (''Bos gaurus''; ), also known as the Indian bison, is a bovine native to South Asia and Southeast Asia, and has been listed as Vulnerable on the IUCN Red List since 1986. The global population was estimated at a maximum of 21,000 m ...

blackbuck The blackbuck (''Antilope cervicapra''), also known as the Indian antelope, is an antelope native to India and Nepal. It inhabits grassy plains and lightly forested areas with perennial water sources. It stands up to high at the shoulder. Ma ...

tiger The tiger (''Panthera tigris'') is the largest living cat species and a member of the genus '' Panthera''. It is most recognisable for its dark vertical stripes on orange fur with a white underside. An apex predator, it primarily preys on u ...

, leopard,

jungle cat The jungle cat (''Felis chaus''), also called reed cat, swamp cat and jungle lynx, is a medium-sized cat native to the Middle East, the Caucasus, South and Southeast Asia and southern China. It inhabits foremost wetlands like swamps, littoral ...

fishing cat The fishing cat (''Prionailurus viverrinus'') is a medium-sized wild cat of South and Southeast Asia. Since 2016, it is listed as Vulnerable on the IUCN Red List. Fishing cat populations are threatened by destruction of wetlands and have declin ...

leopard cat The leopard cat (''Prionailurus bengalensis'') is a small wild cat native to continental South, Southeast, and East Asia. Since 2002 it has been listed as Least Concern on the IUCN Red List as it is widely distributed although threatened by hab ...

smooth-coated otter The smooth-coated otter (''Lutrogale perspicillata'') is an otter species occurring in most of the Indian subcontinent and Southeast Asia, with a disjunct population in Iraq. It is listed as Vulnerable on the IUCN Red List since 1996 and is threa ...

large Indian civet The large Indian civet (''Viverra zibetha'') is a viverrid native to South and Southeast Asia. It is listed as Least Concern on the IUCN Red List. The global population is considered decreasing mainly because of trapping-driven declines in heavi ...

Asian palm civet The Asian palm civet (''Paradoxurus hermaphroditus''), also called common palm civet, toddy cat and musang, is a viverrid native to South and Southeast Asia. Since 2008, it is IUCN Red Listed as Least Concern as it accommodates to a broad rang ...

small Indian civet The small Indian civet (''Viverricula indica'') is a civet native to South and Southeast Asia. It is listed as Least Concern on the IUCN Red List because of its widespread distribution, widespread habitat use and healthy populations living in agr ...

hispid hare The hispid hare (''Caprolagus hispidus''), also called Assam rabbit and bristly rabbit, is a leporid native to South Asia, whose historic range extended along the southern foothills of the Himalayas. Today, its habitat is highly fragmented with an ...

, biome = , border = , borders = , area = , region_type = , coordinates = , geology = , conservation = , habitat_loss = , habitat_loss_ref = , protected = , protected_ref = , embedded = The Terai or Tarai is a lowland region in northern

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

and southern

Nepal Nepal (; ne, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne, सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in South Asia. It is mai ...

that lies south of the outer foothills of the

Himalayas The Himalayas, or Himalaya (; ; ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the very highest, Mount Everest. Over 100 ...

, the

Sivalik Hills The Sivalik Hills, also known as the Shivalik Hills and Churia Hills, are a mountain range of the outer Himalayas that stretches over about from the Indus River eastwards close to the Brahmaputra River, spanning the northern parts of the Indi ...

, and north of the Indo-Gangetic Plain. This lowland belt is characterised by tall

grassland A grassland is an area where the vegetation is dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur natur ...

s, scrub

savannah A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the Canopy (forest), canopy does not close. The open canopy allows sufficient light to rea ...

, sal

forest A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' ...

s and clay rich

swamp A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in ...

s. In

North India North India is a loosely defined region consisting of the northern part of India. The dominant geographical features of North India are the Indo-Gangetic Plain and the Himalayas, which demarcate the region from the Tibetan Plateau and Central ...

, the Terai spreads from the

Yamuna River The Yamuna ( Hindustani: ), also spelt Jumna, is the second-largest tributary river of the Ganges by discharge and the longest tributary in India. Originating from the Yamunotri Glacier at a height of about on the southwestern slopes of Ba ...

eastward across

Haryana Haryana (; ) is an Indian state located in the northern part of the country. It was carved out of the former state of East Punjab on 1 Nov 1966 on a linguistic basis. It is ranked 21st in terms of area, with less than 1.4% () of India's land ar ...

Uttarakhand Uttarakhand ( , or ; , ), also known as Uttaranchal ( ; the official name until 2007), is a state in the northern part of India. It is often referred to as the "Devbhumi" (literally 'Land of the Gods') due to its religious significance and ...

Uttar Pradesh Uttar Pradesh (; , 'Northern Province') is a state in northern India. With over 200 million inhabitants, it is the most populated state in India as well as the most populous country subdivision in the world. It was established in 1950 ...

Bihar Bihar (; ) is a state in eastern India. It is the 2nd largest state by population in 2019, 12th largest by area of , and 14th largest by GDP in 2021. Bihar borders Uttar Pradesh to its west, Nepal to the north, the northern part of West Be ...

and

West Bengal West Bengal (, Bengali: ''Poshchim Bongo'', , abbr. WB) is a state in the eastern portion of India. It is situated along the Bay of Bengal, along with a population of over 91 million inhabitants within an area of . West Bengal is the fourt ...

. The Terai is part of the Terai-Duar savanna and grasslands

ecoregion An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of l ...

. The corresponding lowland region in

Bangladesh Bangladesh (}, ), officially the People's Republic of Bangladesh, is a country in South Asia. It is the eighth-most populous country in the world, with a population exceeding 165 million people in an area of . Bangladesh is among the mos ...

Bhutan Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountainous ...

and

Assam Assam (; ) is a state in northeastern India, south of the eastern Himalayas along the Brahmaputra and Barak River valleys. Assam covers an area of . The state is bordered by Bhutan and Arunachal Pradesh to the north; Nagaland and Manipur ...

in the Brahmaputra River basin is called '

Dooars The Dooars or Duars ( as, দুৱাৰ, duar, rkt, দুৱাৰ, duar, bn, দুয়ার, duyar) () are the alluvial floodplains in eastern-northeastern India that lie south of the outer foothills of the Himalayas and north of the ...

'. In Nepal, the term is applied to the part of the country situated north of the Indo-Gangetic Plain. Nepal's Terai stretches over , about 23.1% of Nepal's land area, and lies at an elevation of between . The region comprises more than 50

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. The ...

s. North of the Terai rises the Bhabar, a narrow but continuous belt of forest about wide.

Etymology

The

Urdu Urdu (;"Urdu"
''

Hindi Hindi (Devanāgarī: or , ), or more precisely Modern Standard Hindi (Devanagari: ), is an Indo-Aryan language spoken chiefly in the Hindi Belt region encompassing parts of northern, central, eastern, and western India. Hindi has been de ...

, the region is called 'tarāī' meaning "foot-hill". In Nepali, the region is called 'tarāi' meaning "the low-lying land, plain" and especially "the low-lying land at the foot of the Himālayas". It has been described as "low, marshy ground".

Geology

The Terai is crossed by the large perennial Himalayan rivers Yamuna, Ganges, Sarda, Karnali,

Narayani Narayani may refer to: * Narayani (deity), another name for Lakshmi * Narayani, an epithet of Yogamaya * Narayani River, or Gandaki River, in Nepal * Narayani Temple, in Narayani village, near Khalikote, Odisha, India * Narayani Zone, a former a ...

and Kosi that have each built

alluvial fans 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 ...

covering thousands of square kilometres below their exits from the hills. Medium rivers such as the Rapti rise in the

Mahabharat Range The Lower Himalayan Range ( ne, पर्वत शृङ्खला parbat shrinkhalā) – also called the Middle Himalayas or Lesser Himalayas or Himachal – is a major east–west mountain range with elevations 3,700 to 4,500 m (12,000 to ...

. The geological structure of the region consists of old and new

alluvium Alluvium (from Latin ''alluvius'', from ''alluere'' 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings. Alluv ...

, both of which constitute alluvial deposits of mainly sand,

clay Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4). Clays develop plasticity when wet, due to a molecular film of water surrounding the clay par ...

silt Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension with water. Silt usually has a floury feel when ...

, gravels and coarse fragments. The new alluvium is renewed every year by fresh deposits brought down by active streams, which engage themselves in fluvial action. Old alluvium is found rather away from river courses, especially on uplands of the plain where

silting Siltation, is water pollution caused by particulate terrestrial clastic material, with a particle size dominated by silt or clay. It refers both to the increased concentration of suspended sediments and to the increased accumulation (temporary or ...

is a rare phenomenon. A large number of small and usually seasonal rivers flow through the Terai, most of which originate in the Sivalik Hills. The soil in the Terai is alluvial and fine to medium textured. Forest cover in the Terai and hill areas has decreased at an annual rate of 1.3% between 1978 and 1979, and 2.3% between 1990 and 1991. With deforestation and cultivation increasing, a permeable mixture of gravel, boulders and sand evolves, which leads to a sinking

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 ...

. But where layers consist of clay and fine sediments, the groundwater rises to the surface and heavy sediment is washed out, thus enabling frequent and massive floods during

monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscil ...

, such as the 2008 Bihar flood.

Geography

In India, the Terai extends over the states of Haryana, Uttarakhand, Uttar Pradesh, Bihar and West Bengal. These are mostly the districts of these states that are on the

India–Nepal border The India–Nepal border is an open international border running between Nepal and the Republic of India. The long border includes the Himalayan territories as well as Indo-Gangetic Plain. The current border was delimited after the Sugauli ...

: * Haryana:

Panchkula district Panchkula district was formed as the 17th district of Haryana state in India on 15August 1995. It comprises two sub divisions and two tehsils: Panchkula and Kalka. It has 264 villages out of which twelve are un-inhabited and ten wholly merged wi ...

* Uttarakhand:

Haridwar district Haridwar district () also spelled as ''Hardwar'' is a district in Garhwal which is a part of Uttarakhand, India. It is headquartered at Haridwar which is also its largest city. The district is ringed by the districts Dehradun in the north and e ...

, Udam Singh Nagar and

Nainital district Nainital district is a district in Kumaon division which is a part of Uttarakhand state in India. The headquarters is at Nainital. Nainital District is located in Kumaon Division, and is located in the lower Himalayas. Haldwani is the largest c ...

s * Uttar Pradesh:

Pilibhit district Pilibhit district is one of the 75 districts in the state of Uttar Pradesh in India, and Pilibhit city is the district headquarters. Pilibhit district is a part of Bareilly Division. A Tiger Reserve Area was named Pilibhit Tiger Reserve in Se ...

Lakhimpur Kheri district Lakhimpur Kheri district is the largest district in Uttar Pradesh, India, on the border with Nepal. Its administrative capital is the city of Lakhimpur. Lakhimpur Kheri district is a part of Lucknow division, with a total area of . The nation ...

Bahraich district Bahraich district is one of the districts of Uttar Pradesh state of India, and Bahraich town is the district headquarters. Bahraich District is a part of Devipatan Division. History According to some other historians in the middle age this pl ...

, Shravasti district, Balrampur district,

Gorakhpur district Gorakhpur district is one of the 75 districts of Uttar Pradesh state in northern India. This district is a part of the Gorakhpur division. The city of Gorakhpur, or Gorakhpur is the administrative headquarters of this district and Gorakhpur divi ...

Siddharthnagar district Siddharthnagar district is one of the 75 districts of the Indian state of Uttar Pradesh also known as the birthplace of Gautama Buddha. Siddharthnagar is the district headquarters. Siddharthnagar district is a part of Basti division. It was unde ...

and

Maharajganj district Maharajganj district is one of the 75 districts of Uttar Pradesh state in northern India, and the town of Maharajganj is the district headquarters. District is a part Gorakhpur division. It is located in Terai regions of Himalayas, bordering Ne ...

* Bihar:

West Champaran district West Champaran is an administrative district in the state of Bihar in India, located just west of Birgunj. It is the largest district in Bihar with an area of 5,228 km²(2,019sq mi). It is a part of Tirhut Division. The district headquarte ...

East Champaran district East Champaran is an administrative district in the state of Bihar in India.The district headquarters are located at Motihari. Prior to 1st Dec 1977, there was a single district called "Champaran". On 1st Dec 1977, the district was divided into 2 ...

Sitamarhi district Sitamarhi is one of the districts in the Mithila region of the Indian state of Bihar, India. Dumra is the administrative headquarters of this district. The district is a part of the Tirhut Division and is located along the border of Nepal. H ...

Madhubani district Madhubani district is one of the thirty-eight districts of Bihar, India, and is a part of Darbhanga division. Its administrative headquarters are located in Madhubani. The district has an area of and has a population of 4,487,379 (as of 2011 ...

, Supaul district,

Araria district Araria district is one of the thirty-eight districts of Bihar state, India. Araria district is a part of Purnia division. The district occupies an area of . Araria town is the administrative headquarters of this district. Etymology During the B ...

Kishanganj district Kishanganj district is one of the thirty-eight districts of Bihar state, India, and Kishanganj town is the administrative headquarters of this district. Kishanganj district is a part of Purnia division (Seemanchal). History Kishanganj distric ...

* West Bengal:

Siliguri subdivision Siliguri subdivision is a subdivision of the Darjeeling district in the state of West Bengal, India. Subdivisions Darjeeling district is divided into the following administrative subdivisions: Police stations Police stations in the Siligu ...

Darjeeling district Darjeeling District is the northernmost district of the state of West Bengal in eastern India in the foothills of the Himalayas. The district is famous for its hill station and Darjeeling tea. Darjeeling is the district headquarters. Kurse ...

Jalpaiguri Sadar subdivision Jalpaiguri Sadar subdivision is an administrative division of the Jalpaiguri district in the Indian state of West Bengal. Geography Subdivisions Jalpaiguri district is divided into the following administrative subdivisions: Administrative ...

Jalpaiguri district Jalpaiguri district () is a district of the Indian state of West Bengal. The district was established in 1869 during British Raj. The headquarters of the district are in the city of Jalpaiguri, which is also the divisional headquarters of No ...

Inner Terai

The Inner Terai consists of five elongated valleys located between the

Mahabharat The ''Mahābhārata'' ( ; sa, महाभारतम्, ', ) is one of the two major Sanskrit epics of ancient India in Hinduism, the other being the '' Rāmāyaṇa''. It narrates the struggle between two groups of cousins in the Kuru ...

and Sivalik ranges. From north-west to south-east these valleys are: * Surkhet Valley in the

Surkhet district Surkhet District ( ne, सुर्खेत जिल्ला, ) is a district in Karnali Province of mid-western Nepal. Surkhet is the one of the ten districts of Karnali located about west of the national capital Kathmandu. The district's ar ...

, north of the Kailali and

Bardiya district Bardiya District ( ne, बर्दिया जिल्ला), one of the seventy-seven Districts of Nepal, is part of Lumbini Province of Nepal. The district, with Gulariya as its headquarters, covers an area of and according to the 2001 ce ...

s; *

Dang Valley The Inner Terai Valleys of Nepal comprise several elongated river valleys in the southern lowland Terai part of the country. These tropical valleys are enclosed by the Himalayan foothills, viz the Mahabharat Range and the Sivalik Hills farther south ...

in the

Dang Deokhuri district Dang District ( ne, दाङ जिल्ला, ) is the district of Lumbini Province located in the Inner Terai of midwestern Nepal. Deukhuri valley of the district is the capital of the province and is the second largest valley of Asia ...

; *

Deukhuri Valley The Inner Terai Valleys of Nepal comprise several elongated river valleys in the southern lowland Terai part of the country. These tropical valleys are enclosed by the Himalayan foothills, viz the Mahabharat Range and the Sivalik Hills farther sout ...

located south of the Dang Valley; *

Chitwan Valley The Chitwan Valley ( ne, चितवन उपत्यका) is an Inner Terai valley in the south of Nepal, encompassing the districts of Makwanpur, Chitwan and Nawalpur. The valley is part of the Terai-Duar savanna and grasslands ecoregion ...

stretching across the

Chitwan Chitwan District (, , ) is one of 77 districts of Nepal, and takes up the southwestern corner of Bagmati Province. Bharatpur, largest city of Nepal after Kathmandu, is its administrative centre. It covers . In 2011 it had a population of 579 ...

and

Makwanpur district Makwanpur District( ne, मकवानपुर जिल्ला; , a part of Bagmati Province, earlier a part of Narayani Zone, is one of the seventy-seven districts of Nepal. The district, with Hetauda as its district headquarter, as well ...

s; * Kamala Valley, also called Udayapur Valley, in the

Udayapur district Udayapur District ( ne, उदयपुर जिल्ला, is one of 14 districts of Province No. 1 of eastern Nepal. The district, with Triyuga as its district headquarters, covers an area of and in 2001 had a population of 287,689, in 20 ...

north of the Siraha and Saptari districts.

Outer Terai

The Outer Terai begins south of the Sivalik Hills and extends to the Indo-Gangetic Plain. In the

Far-Western Region, Nepal The Far-Western Development Region ( Nepali: सुदुर पश्चिमाञ्चल विकास क्षेत्र, ''Sudur Pashchimānchal Bikās Kshetra'') was one of Nepal's five development regions. It was located at the ...

it comprises the Kanchanpur and Kailali districts, and in the

Mid-Western Region, Nepal The Mid-Western Development Region ( Nepali: मध्य-पश्चिमाञ्चल विकास क्षेत्र, ''Madhya-Pashchimānchal Bikās Kshetra'') was one of the largest and formerly one of Nepal's five development reg ...

Bardiya and Banke districts. Farther east, the Outer Terai comprises the Kapilvastu,

Rupandehi Rupandehi District ( ne, रुपन्देही जिल्ला; ), a part of Lumbini Province, is one of the seventy-seven districts of Nepal and covers an area of . The district headquarter is Bhairahawa. As per the national census 2011 ...

Nawalparasi Nawalparasi District ( ne, नवलपरासी जिल्ला, ), part of which belongs to Gandaki Province and part to Lumbini Province, was one of the seventy-five districts of Nepal before being divided into Nawalparasi (West of ...

, Parsa, Bara,

Rautahat Rautahat is a village development committee in Saptari District in the Sagarmatha Zone of south-eastern Nepal. At the time of the 1991 Nepal census it had a population of 2252 people living in 468 individual households. Jung Bahadur Rana ...

Sarlahi Sarlahi ( ne, सर्लाही ; Maithili: सर्लाही), a part of Madhesh Province, is one of the seventy-seven districts of Nepal. According to new laws, a combination of more than two or four villages makes a municipality, whic ...

, Mahottari, Dhanusa, Siraha,

Saptari Saptari ( ne, सप्तरी जिल्ला}), a part of Madhesh Province, is one of the seventy-seven districts of Nepal. Its district headquarter is Rajbiraj. Saptari is an Outer Terai district. This district covers an area of and has ...

, Sunsari,

Morang Morang District ( ne, मोरङ जिल्ला ) is located in Province No. 1 in eastern Nepal. It is an Outer Terai district. It borders with Bihar, India to the South, Jhapa to the East, Dhankuta and Panchthar to the North, and Sunsar ...

and

Jhapa Jhapa ( ne, झापा जिल्ला; ) is a district of Province No. 1 in eastern Nepal named after a Rajbanshi word "Jhapa" meaning "to cover" (verb). The latest official data, the 2021 Nepal Census, puts the total population of the d ...

districts.

Protected areas

Several protected areas were established in the Terai since the late 1950s: *Sonaripur Wildlife Sanctuary, now

Dudhwa National Park The Dudhwa National Park is a national park in the Terai belt of marshy grasslands in northern Uttar Pradesh, India. It stretches over an area of , with a buffer zone of . It is part of the Dudhwa Tiger Reserve in the Kheri and Lakhimpur distri ...

in 1958Mathur, P. K. and N. Midha (2008)
''Mapping of National Parks and Wildlife Sanctuaries, Dudhwa Tiger Reserve''
WII – NNRMS - MoEF Project, Final Technical Report. Wildlife Institute of India, Dehradun. *

Kishanpur Wildlife Sanctuary The Kishanpur Wildlife Sanctuary is a part of the Dudhwa Tiger Reserve near Mailani in Uttar Pradesh, India. It covers an area of and was founded in 1972. It is 13 km away from Bhira town in Lakhimpur Kheri District. The sanctuary is covered w ...

in 1972 *

Chitwan National Park , iucn_category = II , location = Central Terai of Nepal , established = 1973 , nearest_city = Bharatpur , map = Nepal Bagmati Province#Nepal#India#South Asia , relief = 1 , label = Chitwan National Park , label_position = top , coordina ...

in 1973 *

Katarniaghat Wildlife Sanctuary The Katarniaghat Wildlife Sanctuary is a protected area in the Upper Gangetic plain, near Bahraich city in Bahraich district of Uttar Pradesh, India and covers an area of in the Terai of the Bahraich district. In 1987, it was brought under the ...

in 1975 * Shuklaphanta Wildlife Reserve in 1976 *

Koshi Tappu Wildlife Reserve The Koshi Tappu Wildlife Reserve is a protected area in the Terai of eastern Nepal covering of wetlands in the Sunsari, Saptari and Udayapur Districts. It comprises extensive reed beds and freshwater marshes in the floodplain of the Kosi River ...

in 1976 * Udaypur Wildlife Sanctuary in 1978 *

Rajaji National Park Rajaji National Park is an Indian national park and tiger reserve that encompasses the Shivaliks, near the foothills of the Himalayas. It is spread over 820 km2 and includes three districts of Uttarakhand: Haridwar, Dehradun and Pauri G ...

in 1983 * Parsa National Park in 1984 *

Bardia National Park ; , iucn_category = II , photo = Bardiya_02.jpg , photo_caption = , photo_alt= , map_image = , map_caption = Location in Nepal , location = Nepal , map = Nepal , relief = 1 , coordinates = , area_km2 = 968 , established = 1988 , gov ...

in 1988 *

Valmiki National Park Valmiki National Park is a Tiger Reserve in the West Champaran District of Bihar, India. It is the only national park in Bihar. Valmiki Tiger Reserve covers , which is 17.4% of the total geographical area of the district. As of 2018, there wer ...

in 1989 *Jhilmil Jheel Conservation Reserve in 2005 *

Banke National Park Banke National Park is located in the Lumbini Province and was established in 2010 as Nepal’s tenth national park after its recognition as a "Gift to the Earth".DNPWC (2010)''Banke National Park'' Government of Nepal, Ministry of Forests and So ...

in 2010 *

Sohagi Barwa Wildlife Sanctuary Sohagi Barwa Wildlife Sanctuary is in the Maharajganj district in Uttar Pradesh state of India. It covers 428.2 km², located on the west Bank of the Gandaki River, near the border with Nepal. Sohagi Barwa is one of the tiger habitats of i ...

Climate

Based on the Köppen–Geiger climate classification system, the Nepal Terai experiences a

tropical savanna climate Tropical savanna climate or tropical wet and dry climate is a tropical climate sub-type that corresponds to the Köppen climate classification categories ''Aw'' (for a dry winter) and ''As'' (for a dry summer). The driest month has less than of p ...

type with dry winters and hot summers, a mean annual temperature of , a mean annual rainfall of in the west and in the east.

Ethnic groups

Tharu and

Dhimal The Dhimal or Dhemal(in Nepali:धिमाल) are an Kirati ethnic group residing in the eastern Terai of Nepal. They are a Sino-Tibetan-speaking ethnic group of the eastern Terai. They mainly reside in Morang and Jhapa districts of Nepal a ...

people are the

indigenous Indigenous may refer to: *Indigenous peoples *Indigenous (ecology), presence in a region as the result of only natural processes, with no human intervention *Indigenous (band), an American blues-rock band *Indigenous (horse), a Hong Kong racehorse ...

inhabitants of the Terai forests. Several Tharu subgroups are scattered over most of the Nepal and Indian Terai. They used to be semi-nomadic, practised

shifting cultivation Shifting cultivation is an agricultural system in which plots of land are cultivated temporarily, then abandoned while post-disturbance fallow vegetation is allowed to freely grow while the cultivator moves on to another plot. The period of cu ...

and collected wild fruits, vegetables and

medicinal herbs Medicinal plants, also called medicinal herbs, have been discovered and used in traditional medicine practices since prehistoric times. Plants synthesize hundreds of chemical compounds for various functions, including defense and protection a ...

. They have been living in the Terai for many centuries and reputedly had an innate resistance to

malaria Malaria is a mosquito-borne infectious disease that affects humans and other animals. Malaria causes symptoms that typically include fever, tiredness, vomiting, and headaches. In severe cases, it can cause jaundice, seizures, coma, or death. S ...

. Dhimal reside in the eastern Nepal Terai, viz Sunsari, Morang and Jhapa districts. In the past, they lived in the fringes of the forest and conducted a semi-nomadic life to evade outbreaks of diseases. Today, they are subsistence farmers. The

Bhoksa people Bhoksa, also known as Buksa/Bukhasiya, are indigenous peoples living mainly in the Indian states of Uttarakhand and Uttar Pradesh. They are mostly concentrated in Dehradun and Nainital districts in the foothills of the outer Himalayas. They are ...

are indigenous to the western Terai in the Indian

Kumaon division Kumaon (; Kumaoni: ''Kumāū''; ; historically romanized as KemāonJames Prinsep (Editor)John McClelland ) is a revenue and administrative division in the Indian State of Uttarakhand. It spans over the eastern half of the state and is bounde ...

Maithils Maithils (Tirhuta: মৈথিল, Devanagari: मैथिल), also known as Maithili people, are an Indo-Aryan ethno-linguistic group from the Indian subcontinent, who speak the Maithili language as their native language. They inhabit the ...

inhabit the Indian Terai in Bihar and the eastern Terai in Nepal. Bhojpuri people reside in the central and eastern Terai, and

Awadhi people The Awadhi people or Awadhis (Awadhi/Hindi: अवधी, Urdu: ) are an Indo-Aryan peoples, Indo-Aryan ethno-linguistic group who speak the Awadhi dialect and reside in the Awadh region of Uttar Pradesh. Many Awadhis also migrated to Madhya Pr ...

live in the central and western Terai.

Bantawa The Bantawa Language (also referred to as An Yüng, Bantaba, Bantawa Dum, Bantawa Yong, Bantawa Yüng, Bontawa, Kirawa Yüng), is a Kirati languages spoken in the eastern Himalayan hills of eastern Nepal by Kirati Bantawa ethnic groups. They us ...

people reside foremost in two districts of the eastern Terai in Nepal.Lewis, M. P. (ed.) (2009)
MaithiliBhojpuriAwadhiBantawa
Ethnologue: Languages of the World. Sixteenth edition. Dallas, Texas: SIL International. Following the malaria eradication program using

DDT Dichlorodiphenyltrichloroethane, commonly known as DDT, is a colorless, tasteless, and almost odorless crystalline chemical compound, an organochloride. Originally developed as an insecticide, it became infamous for its environmental impacts. ...

in the 1960s, a large and heterogeneous non-Tharu population settled in the Nepal Terai. Pahari people from the mid-hills including

Bahun Bahun ( ne, बाहुन) or Khas Brahmin ( ne, खस ब्राह्मण) is a caste ( ''Varna'') among Khas people of Nepal. Their origins are from the Indo-Aryan Khasa tribe of Nepal and South Asia. According to the 2011 Nepa ...

Chhetri Chhetri (Kshetri, Kshettri, Kshetry or Chhettri), ( ne, क्षेत्री ; IAST: ''Kṣetrī'') historically called Kshettriya or Kshetriya or Khas are Nepali speakers of Khas community, some of whom trace their origin to migration from ...

and Newar moved to the plains in search of arable land. In the rural parts of the Nepal Terai, distribution and value of land determine economic hierarchy to a large extent. High

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 ...

migrants from the hills and traditional Tharu landlords who own agriculturally productive land constitute the upper level of the economic hierarchy. The poor are the landless or near landless Terai

Dalit Dalit (from sa, दलित, dalita meaning "broken/scattered"), also previously known as untouchable, is the lowest stratum of the Caste system in India, castes in India. Dalits were excluded from the four-fold Varna (Hinduism), varna syste ...

s, including the Musahar,

Chamar Chamar is a Dalit community classified as a Scheduled Caste under modern India's system of affirmative action. Historically subject to untouchability, they were traditionally outside the Hindu ritual ranking system of castes known as varna. ...

and

Mallah The Mallaah are the traditional boatmen and fishermen tribes or communities of North India, East India, Northeastern India and Pakistan. A significant number of Mallah are also found in Nepal and Bangladesh. In the Indian state of Bihar, the ter ...

. Several

Chepang people The Chepang, also known as Chewang, are an Tibeto-Burman ethnic group from the rugged ridges of the Mahabharat mountain range of central Nepal.Beine, Caughley and Shrestha. 2012. Chepang Then and Now: Life and Change Among the Chepang of Nepal. ...

also live in Nepal's central and eastern Terai districts. As of June 2011, the human population in the Nepal Terai totalled 13,318,705 people in 2,527,558 households comprising more than 120 different ethnic groups and

s such as Badi, Chamling,

Ghale Ghale is an indigenous group of Nepal. The Ghale speak Ghale language Ghale is a Tibeto-Burman language of Nepal. It belongs to the group of Ghale languages. The dialects of Ghale have limited intelligibility: (south) Barpak, Kyaura, Laprak, ...

, Kumal, Limbu, Magar,

Muslim Muslims ( ar, المسلمون, , ) are people who adhere to Islam, a monotheistic religion belonging to the Abrahamic tradition. They consider the Quran, the foundational religious text of Islam, to be the verbatim word of the God of Abrah ...

, Rajbanshi,

Teli Teli is a caste traditionally occupied in the pressing of oil in India, Nepal and Pakistan. Members may be either Hindu or Muslim; Muslim Teli are called Roshandaar or Teli Malik. The Jewish community of Maharashtra (called Bene Israel) was ...

Thakuri Thakuri ( ne, ठकुरी) is a sub-caste of Khasas tribes in Nepal. It consists of the historical ruling class, and is made up of the descendants of the Great Khasa Malla kingdom rulers of the Baisi and Chaubisi principalities. The former ...

Yadav Yadav refers to a grouping of traditionally non-elite, Quote: "The Yadavs were traditionally a low-to-middle-ranking cluster of pastoral-peasant castes that have become a significant political force in Uttar Pradesh (and other northern state ...

and Majhi speaking people.

History

The Muslim invasion of northern India during the 14th century caused Hindu and Buddhist people to seek refuge from religious persecution.

Rajput Rajput (from Sanskrit ''raja-putra'' 'son of a king') is a large multi-component cluster of castes, kin bodies, and local groups, sharing social status and ideology of genealogical descent originating from the Indian subcontinent. The term Ra ...

nobles and their entourage migrated to the Himalayan foothills and gained control over the region from

Kashmir Kashmir () is the northernmost geographical region of the Indian subcontinent. Until the mid-19th century, the term "Kashmir" denoted only the Kashmir Valley between the Great Himalayas and the Pir Panjal Range. Today, the term encompas ...

to the eastern Terai during the next three centuries. Until the mid 18th century, the Nepal Terai was divided into several smaller kingdoms, and the forests were little disturbed. By the 16th century, the rulers of Palpa and

Makwanpur Makwanpur District( ne, मकवानपुर जिल्ला; , a part of Bagmati Province, earlier a part of Narayani Zone, is one of the seventy-seven districts of Nepal. The district, with Hetauda as its district headquarter, as well ...

controlled the mid-western Terai and extended this control to the eastern Terai by the 17th century. They controlled the area of today's districts of

, Siraha, Dhanusa, Mahottari and

. The rulers of

controlled the central Terai region of present-day Nepal, and the rulers of Vijayapur controlled today's Sunsari,

and

Jhapa District Jhapa ( ne, झापा जिल्ला; ) is a district of Province No. 1 in eastern Nepal named after a Rajbanshi word "Jhapa" meaning "to cover" (verb). The latest official data, the 2021 Nepal Census, puts the total population of the ...

s. The Shah rulers conquered the eastern Nepal Terai in the 1770s. They also conquered land in the eastern Terai that belonged to the

Kingdom of Sikkim The Kingdom of Sikkim (Classical Tibetan and sip, འབྲས་ལྗོངས།, ''Drenjong''), officially Dremoshong (Classical Tibetan and sip, འབྲས་མོ་གཤོངས།) until the 1800s, was a hereditary monar ...

. The Tulsipur State in the Dang Valley of Nepal's western Terai was also an independent kingdom, until it was conquered in 1785 by

Bahadur Shah of Nepal Prince Bahadur Shah ( ne, बहादुर शाह) was the youngest son of King Prithvi Narayan Shah of modern Nepal. He became the regent of Nepal for a brief period after the death of his predecessor Queen Rajendra Laxmi of Nepal and acce ...

during the

unification of Nepal The Unification of Nepal, also known as Expansion of Gorkha Kingdom, officially began in 1743 AD (1799 BS) after King Prithvi Narayan Shah of Gorkha launched an aggressive annexation campaign seeking to broaden his own kingdom's border. After ...

. Since the late 18th century, the Shah rulers encouraged Indian people to settle in the Terai and supported famine-stricken Bihari farmers to convert and cultivate land in the eastern Nepal Terai. From at least 1786 onward, they appointed government officers in the eastern Terai districts of Parsa, Bara, Rautahat, Mahottari, Saptari and Morang to levy taxes, collect revenues, and capture

Indian elephant The Indian elephant (''Elephas maximus indicus'') is one of four extant recognised subspecies of the Asian elephant and native to mainland Asia. Since 1986, the Asian elephant has been listed as Endangered on the IUCN Red List as the wild pop ...

s and

. At the end of the 18th century, between 200 and 300 elephants were caught annually using snares or nooses. The far-western and mid-western regions of the Nepal Terai called '

Naya Muluk Naya Muluk ( ne, नयाँ मुलुक) is a geographical region of Nepal, which is situated western-south part in Nepal. The Terai land between Kali River to Rapti River called "Naya Muluk" after 1860. History After Anglo-Nepalese W ...

' (new country) lay on the northern periphery of the

Awadh Awadh (), known in British historical texts as Avadh or Oudh, is a region in the modern Indian state of Uttar Pradesh, which was before independence known as the United Provinces of Agra and Oudh. It is synonymous with the Kośāla region of ...

dynasty. After Nepal lost the

Anglo–Nepalese War The Anglo-Nepalese War (1 November 1814 – 4 March 1816), also known as the Gorkha War, was fought between the Gorkhali army of the Kingdom of Nepal (present-day Nepal) and the British forces of the East India Company (EIC, present-day Indi ...

in 1816, the

British British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, ...

annexed these regions in the Terai when the

Sugauli Treaty The Treaty of Sugauli (also spelled Sugowlee, Sagauli and Segqulee), the treaty that established the boundary line of Nepal, was signed on 4 March 1816 between the East India Company and Guru Gajaraj Mishra following the Anglo-Nepalese War ...

was ratified. But as reward for Nepal's military aid in the

Indian Rebellion of 1857 The Indian Rebellion of 1857 was a major uprising in India in 1857–58 against the rule of the British East India Company, which functioned as a sovereign power on behalf of the British Crown. The rebellion began on 10 May 1857 in the fo ...

, they returned some of this region in 1860, namely today's districts Kanchanpur, Kailali, Banke and Bardiya. To promote economic development of the Nepal Terai, people from the hills were invited to settle in the region. Since only a few moved to the Terai, Indian people were encouraged to settle. Immigration of Indian people increased between 1846 and 1950. They settled in the eastern Nepal Terai together with native Terai peoples. The Indian Terai remained largely uninhabited until the end of the 19th century, as it was arduous and dangerous to penetrate the dense and

marsh A marsh is a wetland that is dominated by herbaceous rather than woody plant species.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p Marshes can often be found at ...

jungle A jungle is land covered with dense forest and tangled vegetation, usually in tropical climates. Application of the term has varied greatly during the past recent century. Etymology The word ''jungle'' originates from the Sanskrit word ''ja� ...

Dacoit Dacoity is a term used for "banditry" in the Indian subcontinent. The spelling is the anglicised version of the Hindi word ''daaku''; "dacoit" is a colloquial Indian English word with this meaning and it appears in the ''Glossary of Colloquia ...

gangs retreated to the Terai jungles, and the area was considered lawless and primitive by the British, who sought control of the region's valuable timber reserves. The region was densely forested with stands of foremost Sal. Heavy logging began in the 1920s. Extracted timber was exported to India to collect revenues. Cleared areas were subsequently used for agriculture. But still, the Terai jungles were teaming with wildlife. Inner Terai valleys historically were agriculturally productive but extremely malarial. Some parts were left forested by official decree during the

Rana dynasty Rana dynasty ( ne, राणा वंश, IAST=Rāṇā vaṃśa , ) is a Chhetri dynasty that imposed totalitarianism in the Kingdom of Nepal from 1846 until 1951, reducing the Shah monarch to a figurehead and making Prime Minister and othe ...

as a defensive perimeter called ''Char Kose Jhadi'', meaning 'four kos forest'; one kos equals about . A British observer noted, "Plainsmen and paharis generally die if they sleep in the Terai before November 1 or after June 1." British travelers to Kathmandu went as fast as possible from the border at

Raxaul Raxaul is a sub-divisional town in the East Champaran district of the Indian state of Bihar. It is situated at the India-Nepal border with Birgunj city (Nepal). Raxaul is a major railway junction. The Indian border town of Raxaul has become on ...

to reach the hills before nightfall. Malaria was eradicated using

in the mid-1950s. Subsequently, people from the hills migrated to the Terai. About 16,000

Tibetan Tibetan may mean: * of, from, or related to Tibet * Tibetan people, an ethnic group * Tibetan language: ** Classical Tibetan, the classical language used also as a contemporary written standard ** Standard Tibetan, the most widely used spoken dial ...

refugees settled in the Nepal Terai in 1959–1960, followed by refugees of Nepali origin from

Burma Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John Wells explai ...

in 1964, from

Nagaland Nagaland () is a landlocked state in the northeastern region of India. It is bordered by the Indian states of Arunachal Pradesh to the north, Assam to the west, Manipur to the south and the Sagaing Region of Myanmar to the east. Its capital cit ...

and

Mizoram Mizoram () is a state in Northeast India, with Aizawl as its seat of government and capital city. The name of the state is derived from "Mizo people, Mizo", the endonym, self-described name of the native inhabitants, and "Ram", which in the Mizo ...

in the late 1960s, and about 10,000

i Muslims from Bangladesh in the 1970s. Timber export continued until 1969. In 1970, the

king King is the title given to a male monarch in a variety of contexts. The female equivalent is queen, which title is also given to the consort of a king. *In the context of prehistory, antiquity and contemporary indigenous peoples, the tit ...

granted land to loyal ex-army personnel in the districts of Jhapa, Sunsari,

and Banke, where seven colonies were developed for resettling about 7,000 people. They acquired property rights over uncultivated forest and 'waste' land, thus accelerating the deforestation process in the Terai. Between 1961 and 1991, the annual population growth in the Terai was higher than the national average, which indicates that migration from abroad occurred at a large scale. Deforestation continued, and forest products from state-owned forest were partly smuggled to India.

Community forestry Community forestry is an evolving branch of forestry whereby the local community plays a significant role in forest management and land use decision making by themselves in the facilitating support of government as well as change agents. It involv ...

was introduced in 1995. Since the 1990s, migration from the Terai to urban centres is increasing and causing sociocultural changes in the region.

Politics

Since the early 1950s, several political parties advocated for

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 ...

and independence of the Nepal Terai, such as the

Nepal Terai Congress Nepal Terai Congress was a political party in Nepal. The party was founded in 1951 by Vedanand Jha, with the objective of seeking autonomy for the Terai. The party was founded after a split from the Nepali Congress. The party called for the recogn ...

and Janatantrik Terai Mukti Morcha. Several armed groups were formed, which pursued this aim using violent means. In 2013, more than 24 Madheshi political parties were registered for the Constituent Assembly of Nepal election.

Border disputes

The most significant border dispute of the Indo-Nepal boundary in the Terai region is the Susta territory, Susta area. In the Susta region, 14,500 hectares of land is generally dominated by Indian side with support of Sashastra Seema Bal (Indian border patrol) forces.

Indian influence in Nepal Terai

After the 2008 Nepalese Constituent Assembly election, Indian politicians kept on trying to secure strategic interests in the Nepal Terai, such as over hydropower energy, development projects, business and trade. The government of Nepal has accused India of imposing an undeclared 2015 Nepal blockade, blockade in 2015.

Humanitarian works

Sitaram Kattel, Dhurmus Suntali Foundation handed over an integrated community containing 50 houses to Musahar community of Bardibas at a cost of Rs. 63 million.

Economy

Economy in Nepal Terai

The Terai is the most productive region in Nepal with the majority of the country's industries. Agriculture is the basis of the economy. Major crops include rice, wheat, maize, potato, peas, lentil, Mustard oil, mustard, sugar cane, ginger, turmeric, cardamom, garlic and Chili pepper, chili. Fruits comprise mango, lychee, guava, papaya, banana and jackfruit. The Terai is also known for beekeeping and honey production, with about 120,000 colonies of ''Apis cerana''. In the Jhapa district, Camellia sinensis, tea has been cultivated since 1960; the annual production of 2005 was estimated at 10.1 million kg. The Mahendra Highway crosses the Nepal Terai from Kankarbhitta on the eastern border in

, Province No. 1 to Mahendranagar, Mahakali, Mahendranagar near the western border in Kanchanpur District, Mahakali Zone. It is the only motor road spanning the country from east to west.

Economy in Indian Terai

Darjeeling tea, Tea cultivation was introduced in the Darjeeling Terai in 1862.

Tourism

Tourist attractions in the Terai include: * Har Ki Pauri on the banks of the Ganges where the river enters the Terai plains * Lumbini, birthplace of Buddha * Janakpur

References

Bibliography

* * *

External links

WWF: ''Map of ecological divisions of Nepal'', showing the Terai
{{Uttarakhand Plains of Nepal Plains of India Grasslands of India Grasslands of Nepal Grasslands of Bhutan Geography of Uttarakhand Landforms of Uttarakhand Wetlands of Nepal Ganges basin Ecoregions of the Himalayas Indomalayan ecoregions