Describe the main characteristics of natural vegetation in Tropical grasslands and show how it is influenced by climate.
Tropical grasslands are known for widespread proliferation of grasses including many C4 plants, short trees and low bushes. Presence of wide range of grasses, and some grasses may grow very high known as Elephant grasses. In-between long grasses are scattered short trees & low bushes.
Natural vegetation in tropical grasslands also shows a series of transitions between the rainforest and the desert. At one extreme, the ‘closed’ savanna Is mainly trees with areas of grasses; at the other, the ‘open’ savanna Is vegetated only by scattered tufts of grass. The trees are deciduous and lose their leaves and this happiness in winter. Trees are xerophytes, or drought-resistant. Even when leaves do appear, they are small, waxy and sometimes thorn-like. Roots are long and extend to tap any underground water. Trunks are goaded and the bark is usually thick to reduce moisture loss.
Influence of Climate
The plants in tropical grasslands have the characteristic feature to deal with long periods of drought. Trees are generally deciduous, shedding their leaves in cool, dry season to prevent excessive loss of water through transpiration.
As climate in tropical grass lands are alternate wet and dry types, so most of the tress develop drought resistant features. Further, the trees are more regularly spaced than in forests to get water in dry seasons.