Which among the following is the major cause of soil erosion and land degradation in South 24 Parganas?

Waterlogging, high salinity, very poor water retention capacity, tidal waves, coastal run off, excess siltation of rivers are main causes of soil erosion in coastal regions. These areas include North and South 24 Parganas, East Midnapore, Howrah and some parts of Hoogly districts.