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Land is often defined as the solid, dry surface of Earth. [1] The word land may also collectively refer the collective natural resources of Earth, [2] including its land cover, rivers, shallow lakes, its biosphere, the lowest layer of the atmosphere (troposphere), groundwater reserves, and the physical results of human activity on land, such as architecture and agriculture. [3]
Terrestrial ecosystems occupy 55,660,000 mi 2 (144,150,000 km 2), or 28.26% of Earth's surface. [5] Major plant taxa in terrestrial ecosystems are members of the division Magnoliophyta (flowering plants), of which there are about 275,000 species, and the division Pinophyta (conifers), of which there are about 500 species.
Mesa – Elevated area of land with a flat top and sides, usually much wider than buttes; Mountain pass – Route through a mountain range or over a ridge; Plain – Expanse of land that is mostly flat and treeless; Plateau – Highland area, usually of relatively flat terrain; Ravine – Small valley, often due to stream erosion
Examples are mountains, hills, polar caps, and valleys, which are found on all of the terrestrial planets. The scientific study of landforms is known as geomorphology. In onomastic terminology, toponyms (geographical proper names) of individual landform objects (mountains, hills, valleys, etc.) are called oronyms. [4]
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.
According to Richard Forman and Michael Godron, [16] a landscape is a heterogeneous land area composed of a cluster of interacting ecosystems that is repeated in similar form throughout, whereby they list woods, meadows, marshes and villages as examples of a landscape's ecosystems, and state that a landscape is an area at least a few kilometres ...
Photo showing piece of agricultural land irrigated and ploughed for paddy cultivation Share of land area used for agriculture, OWID. Agricultural land is typically land devoted to agriculture, [1] the systematic and controlled use of other forms of life—particularly the rearing of livestock and production of crops—to produce food for humans.
Dispersed settlement or Streusiedlung in Brülisau, Appenzell Innerrhoden, Switzerland. A dispersed settlement, also known as a scattered settlement, is one of the main types of settlement patterns used by landscape historians to classify rural settlements found in England and other parts of the world.