HORTICULTURE

Detailed explanation-1: -Overgrazing exceeds the carrying capacity of a pasture. However there may be other factors involved or contributing to apparent overgrazing such as climate change. Overgrazing often results in soil erosion, the destruction of vegetation, and other problems related to these processes.

Detailed explanation-2: -’Climatic variations’ and ‘Human activities’ can be regarded as the two main causes of desertification. removal of the natural vegetation coverby taking too much fuel wood, agricultural activities in the vulnerable ecosystems of arid and semi-arid areas, which are thus strained beyond their capacity.

Detailed explanation-3: -The classification system used in the preparation of continental desertification maps is based on four classes of desertification: slight, moderate, severe, and very severe.