Question

why are the southern slopes in himalayan region covered with thick vegetation cover as compared to northern slopes of same himalayas

Answer 1

1) In mountainous regions, there is decrease in temperature with increasing altitudes and as such a variety of natural vegetation forms are found here

2) The wet temperate type of forests cover most of the Southern slopes of the Himalayas, and places having high altitudes. The type of vegetation form found here are evergreen broad leaf trees such as oaks etc

3) Temperature favour natural vegetation and as a result, southern slopes which have this climatic condition possess more plant species than Northern slopes of the same Himalayan region