Question

Why are the Southern slopes in the Himalayan region covered with thick vegetation cover as compared to Northern slopes of the same hills?

Answer 1

Hint: The amount of vegetation in an area is dependent on many factors. Rainfall, amount of sunlight received, temperature, etc. are some of the factors determining the same.

Complete answer:
The Southern slopes of the Himalayas have more vegetation than the northern slopes.
One reason is that the Southern slopes receive the South Western Monsoon winds. These winds are crucial for the vegetation growth in the country, and hence, plays an important role for the same here as well. The incoming of the South Western Monsoon winds bring with them plenty of rainfall.
These slopes are also much less elevated than the Northern ones. Hence, they receive ample sunlight to support vegetation and temperatures too permit the growth of vegetation.
These slopes are covered with thick cover of coniferous forests and a wide range of flora and fauna can be found in these woods. As the slope rises Northwards, the vegetation grows more and more sparse and grasslands occur.

Note: The Himalayas rises very sharply at its Northern edge, and falls gradually towards the South. The highest and Northernmost mountains belong to the Himadri ranges, then the lesser Himalayan mountains belong to the Himachal. The Shiwaliks are present at the Southernmost slopes which are also the lowest elevated hills and contain thick vegetation.