The foothills of the Himalayas are prone to excessive soil erosion .why?
Answers
Because of more rainfall and extreme climatic conditions there The reasons are:
The Top soil in most parts just simply lie on rocky surfaces and does not get firm grip on the rock.
In some other part, there is a layer of sand on the rocky surface. This makes the soil above the layer of sand to slide down giving rise to land slide and this in turn leads to soil erosion.
Deforestation is one of the major cause for soil erosion as the barren space is left exposed to flowing rain water and blowing wind carrying particles of the soil with them.
Agricultural cultivation also contributed to soil erosion to a large extent. Here, the soil is made loose due to ploughing and hence easily carried away by erosion agencies.
As for some foothills like the state of Meghalaya, India is receiving the highest amount of annual rainfall, hundreds of tonnes of soil is being carried away by rivers to the nearest plain(Bangladesh) every year.
Many more factors may also be considered for Soil erosion.
The foothills of Himalayas are prone to excessive soil erosion because, the Himalayan rivers such as The Ganga, which may erode the surface of the himalayan region.