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Land cover is the physical material at the land surface of Earth. Land covers include flora , concrete , built structures, bare ground, and temporary water . Earth cover is the expression used by ecologist Frederick Edward Clements that has its closest modern equivalent being vegetation .
A supervised classification is a system of classification in which the user builds a series of randomly generated training datasets or spectral signatures representing different land-use and land-cover (LULC) classes and applies these datasets in machine learning models to predict and spatially classify LULC patterns and evaluate classification accuracies.
Barren vegetation describes an area of land where plant growth may be sparse, stunted, and/or contain limited biodiversity. Environmental conditions such as toxic or infertile soil, high winds, coastal salt-spray, and climatic conditions are often key factors in poor plant growth and development. Barren vegetation can be categorized depending ...
Plain of Campidano, Italy. A plain or flatland is a flat expanse of land with a layer of grass 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.
If the waters move too fast over bare land, then they can strip away topsoil and nutrients, leaving behind barren sands. By inserting barriers across creeks and encouraging water to spread outwards, the energy of a flood is reduced, the currents tend to deposit soil from upstream, and the water can soak into the land.
Prices and rents for agricultural land depend on supply and demand. Prices/rents rise when the supply of farmland on the market reduces. Landholders then put more land on the market – causing prices to fall. Conversely, land prices/rents fall when the demand for agricultural land declines because of falls in the returns from holding and using it.
Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial deposits are covered by soil and vegetation and cannot be seen or examined closely. However, in places where the overlying cover is removed through erosion or tectonic uplift , the rock may be exposed, or crop out .
Anthropogenic biomes (v1 from Ellis & Ramankutty (2008)). Anthropogenic biomes, also known as anthromes, human biomes or intensive land-use biome, describe the terrestrial biosphere in its contemporary, human-altered form using global ecosystem units defined by global patterns of sustained direct human interaction with ecosystems.