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Thursday, October 15, 2020

Different types of Grasslands (ENVIRONMENT AND ECOLOGY)

Grassland

Grassland biomes are unaltered areas of land where grass in the dominant plant life, as opposed to other terrestrial biomes where trees occupy most of the land surface. Grassland are found around the globe and have served as grazing areas for a large number of animals, and have been exploited as farming grounds or plantations by humans. They occupy about one quarter of the Earth’s land area. Grasslands are considered the transitional biome and are found between deserts and forests.

They have been divided into follows two parts:

Savannah

Savannah is grassland with scattered individual trees. They cover almost half the surface of Africa and large areas of Australia, South America, and India, Climate is the most important factor in creating a Savannah. These are always found in warm or hot climate where the annual rainfall is from about 40 to 80 cm per year, Savannah has both a dry and a rainy season. The soil of the savannah is porous, with rapid drainage of water. It has only a thin layer of humus, which provides vegetation with nutrients. The predominant vegetation consists of grasses and forbs (small broad-leaved plants that grow with grasses). Different savannas support different grasses due to disparities in rainfall and soil conditions. Seasonal fires Play a vital role in the savannah’s biodiversity. The world’s greatest diversity of ungulates (hoofed mammals) is found on the savannas of Africa and hence they are also called The big game country.

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