The tropics are known for their richness in plant and animal diversity. India being situated in the tropical region, enjoys an unique position geographically. It offers the maximum known altitudinal gradients from sea level to the greater Himalayas in the north and the Nilgiris in the south along with the Vindhya and Satpura ranges. The vegetational gradients are extreme, starting from the dense evergreen forests of north-east India and the Western Ghats in the ...
