Question

Q- Why are the soutern slopes in Himalayan region covered with thick vegetation cover as compared to northern slopes of the same hills?

Answer 1

The southern slopes of the Himalayas are covered with vegetation in comparison to the northern slopes due to the fact that they receive more sunshine. The maximum ascent of the sun towards the north of equator is up to the Tropic of Cancer which lies below the southern slopes of Himalayas. As such, they receive more light. Another factor is that the southern slopes receive more rainfall as they face the rain bearing monsoon winds. The northern slopes, on the other hand receive scanty rainfall as they are in the rain shadow area and thus have less vegetation.