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Clwydian Range And Dee Valley AONB
, iucn_category =V , iucn_ref = , photo =Sunny Hillside, Frosty Valley Dee Valley Wales (11014647076).jpg , photo_width = , photo_alt =Image of the view of the Dee Valley from Moel Y Gamelin , photo_caption = Near the Dee Valley, on Moel y Gamelin , image_map = Clwydian Range and Dee Valley AONB map.svg , map_caption = Map of the AONB in Wales , map = , map_width = 200 , map_alt = , AlternativeMap = , relief = , label = , label_position = , mark = , marker_size = , location = Clwyd, Wales , nearest_city = , nearest_town =Ruthin, St Asaph, Prestatyn, Mold, Flintshire, Mold, Chirk , coordinates = , coords_ref = , length = , length_mi = , length_km = , width = , width_mi = , width_km = , area = , area_ha = , area_acre = , area_km2 =389.26 , area_sqmi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woodland
A woodland () is, in the broad sense, land covered with trees, or in a narrow sense, synonymous with wood (or in the U.S., the ''plurale tantum'' woods), a low-density forest forming open habitats with plenty of sunlight and limited shade (see differences between British, American, and Australian English explained below). Woodlands may support an understory of shrubs and herbaceous plants including grasses. Woodland may form a transition to shrubland under drier conditions or during early stages of primary or secondary succession. Higher-density areas of trees with a largely closed canopy that provides extensive and nearly continuous shade are often referred to as forests. Extensive efforts by conservationist groups have been made to preserve woodlands from urbanization and agriculture. For example, the woodlands of Northwest Indiana have been preserved as part of the Indiana Dunes. Definitions United Kingdom ''Woodland'' is used in British woodland management to mean tre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broad-leaved Tree
A broad-leaved, broad-leaf, or broadleaf tree is any tree within the diverse botanical group of angiosperms that has flat leaves and produces seeds inside of fruits. It is one of two general types of trees, the other being a conifer, a tree with needle-like or scale-like leaves and seeds borne in woody cones. Broad-leaved trees are sometimes known as hardwoods. Most deciduous trees are broad-leavedLee, S. and A. RafloTrees and Water. Virginia Water Resources Research Center. Virginia Tech. but some are coniferous, like larches. U.S. Department of Agriculture Tree types Gallery |
Crag And Tail
A crag (sometimes spelled cragg, or in Scotland craig) is a rocky hill or mountain, generally isolated from other high ground. Origin Crags are formed when a glacier or ice sheet passes over an area that contains a particularly resistant rock formation (often granite, a volcanic plug or some other volcanic structure). The force of the glacier erodes the surrounding softer material, leaving the rocky block protruding from the surrounding terrain. Frequently the crag serves as a partial shelter to softer material in the wake of the glacier, which remains as a gradual fan or ridge forming a tapered ramp (called the tail) up the leeward side of the crag. In older examples, or those latterly surrounded by the sea, the tail is often missing, having been removed by post-glacial erosion. Examples Examples of crag and tail formations include: * Castle Rock (the crag, site of Edinburgh Castle) and the Royal Mile (the tail), in Edinburgh, Scotland * Salisbury Crags and Arthur's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hillforts In Britain
Hillforts in Britain refers to the various hillforts within the island of Great Britain. Although the earliest such constructs fitting this description come from the Neolithic British Isles, with a few also dating to later Bronze Age Britain, British hillforts were primarily constructed during the British Iron Age. Some of these were apparently abandoned in the southern areas that were a part of Roman Britain, although at the same time, those areas of northern Britain that remained free from Roman occupation saw an increase in their construction. Some hillforts were reused in the Early Middle Ages, and in some rarer cases, into the Later Medieval period as well. By the early modern period, these had essentially all been abandoned, with many being excavated by archaeologists in the nineteenth century onward. There are around 3,300 structures that can be classed as hillforts or similar "defended enclosures" within Britain. Most of these are clustered in certain regions: south and sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moorland
Moorland or moor is a type of habitat found in upland areas in temperate grasslands, savannas, and shrublands and montane grasslands and shrublands biomes, characterised by low-growing vegetation on acidic soils. Moorland, nowadays, generally means uncultivated hill land (such as Dartmoor in South West England), but also includes low-lying wetlands (such as Sedgemoor, also South West England). It is closely related to heath, although experts disagree on what precisely distinguishes these types of vegetation. Generally, moor refers to highland and high rainfall zones, whereas heath refers to lowland zones which are more likely to be the result of human activity. Moorland habitats mostly occur in tropical Africa, northern and western Europe, and neotropical South America. Most of the world's moorlands are diverse ecosystems. In the extensive moorlands of the tropics, biodiversity can be extremely high. Moorland also bears a relationship to tundra (where the subsoil is permafros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ericaceae
The Ericaceae are a family of flowering plants, commonly known as the heath or heather family, found most commonly in acidic and infertile growing conditions. The family is large, with c.4250 known species spread across 124 genera, making it the 14th most species-rich family of flowering plants. The many well known and economically important members of the Ericaceae include the cranberry, blueberry, huckleberry, rhododendron (including azaleas), and various common heaths and heathers (''Erica'', ''Cassiope'', ''Daboecia'', and ''Calluna'' for example). Description The Ericaceae contain a morphologically diverse range of taxa, including herbs, dwarf shrubs, shrubs, and trees. Their leaves are usually evergreen, alternate or whorled, simple and without stipules. Their flowers are hermaphrodite and show considerable variability. The petals are often fused (sympetalous) with shapes ranging from narrowly tubular to funnelform or widely urn-shaped. The corollas are usually ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plain
In geography, a plain is a flat expanse of land that generally does not change much in elevation, and is primarily treeless. Plains occur as lowlands along valleys or at the base of mountains, as coastal plains, and as plateaus or uplands. In a valley, a plain is enclosed on two sides, but in other cases a plain may be delineated by a complete or partial ring of hills, by mountains, or by cliffs. Where a geological region contains more than one plain, they may be connected by a pass (sometimes termed a gap). Coastal plains mostly rise from sea level until they run into elevated features such as mountains or plateaus. Plains are one of the major landforms on earth, where they are present on all continents, and cover more than one-third of the world's land area. Plains can be formed from flowing lava; from deposition of sediment by water, ice, or wind; or formed by erosion by the agents from hills and mountains. Biomes on plains include grassland ( temperate or subtr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Field System
The study of field systems (collections of fields) in landscape history is concerned with the size, shape and orientation of a number of fields. These are often adjacent, but may be separated by a later feature. Field systems by region Czech Republic In the Czech Republic (ancient Bohemia, Moravia and Czech Silesia), Ervín Černý undertook a study of medieval field systems. England Although agriculture was practised earlier, the earliest recognisable field systems in England are neolithic. Cairnfields, which are pre-historic in date, are found in upland areas. They contain scattered stones and boulders and originated in surface clearance for agriculture.''Field Systems'', English Heritage, May, 2011 So called Celtic fields can date from the Bronze Age through to the early Middle Ages. These fields are typically small and rectangular. They are frequently coaxial - that is they form a system in which the boundaries of adjacent fields make a series of long, roughly parallel lines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wales In The Middle Ages
Wales in the Middle Ages covers the history of the country that is now called Wales, from the departure of the Romans in the early fifth century, the development of regional Welsh kingdoms and Celtic conflict with the Anglo-Saxons, reducing Celtic territories. Conflict also occurred between the Welsh and the Anglo-Normans from the 11th century until the annexation of Wales into the Kingdom of England in the early sixteenth century. Early Middle Ages: 411–1066 When the Roman garrison of Britain was withdrawn in 410, the various British states were left self-governing. Evidence for a continuing Roman influence after the departure of the Roman legions is provided by an inscribed stone from Gwynedd dated between the late 5th and mid-6th centuries commemorating a certain Cantiorix who was described as a citizen (''cives'') of Gwynedd and a cousin of Maglos the magistrate (''magistratus''). There was considerable Irish colonisation in Dyfed, where there are many stones with ogham ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
