Search results
Results from the WOW.Com Content Network
The tropical and subtropical grasslands, savannas, and shrublands are characterized by rainfall levels between 90–150 centimetres (35–59 in) per year. [1] Rainfall can be highly seasonal, with the entire year's rainfall sometimes occurring within a couple of weeks. African savannas occur between forest or woodland regions and grassland regions.
Grasslands often occur in areas with annual precipitation is between 600 mm (24 in) and 1,500 mm (59 in) and average mean annual temperatures ranges from −5 and 20 °C. [35] However, some grasslands occur in colder (−20 °C) and hotter (30 °C) climatic conditions.
Deforestation, and conversion of grasslands to desert, may also lead to cooling of the regional climate. This is because of the albedo effect (sunlight reflected by bare ground) during the day, and rapid radiation of heat into space at night, due to the lack of vegetation and atmospheric moisture. [18]
Grasslands help filter and purify surface water, groundwater and air with their dense, deep roots, which trap rainwater, allowing it to trickle into the soil, where it is cleaned.
These grasslands can be classified as the tropical and subtropical grasslands, savannas and shrublands biome. The rainfall level for that grassland type is between 90 and 150 centimeters per year. Grasses and scattered trees are common for that ecoregion, as well as large mammals, such as wildebeest (Connochaetes taurinus) and zebra (Equus zebra).
Researchers also reported that while tropical forests can offset the expected effects of drought if they have enough water reserves, warming climate extends the northern boreal forest growth ...
Tropical grasslands, savannas, and shrublands [10] are spread over a large area of the tropics with a vegetation made up mainly of low shrubs and grasses, often including sclerophyll species. [10] Some of the most representative are the Western Zambezian grasslands in Zambia and Angola , as well as the Einasleigh upland savanna in Australia and ...
In physical geography, a steppe (/ s t ɛ p /) is an ecoregion characterized by grassland plains without closed forests except near rivers and lakes. [1] Steppe biomes may include: the montane grasslands and shrublands biome; the tropical and subtropical grasslands, savannas, and shrublands biome; the temperate grasslands, savannas, and ...