It is defined as the removal of the forests and its replacement by another land use class.To determine whether the removal of trees from an area constitutes deforestation, it is necessary to take into account the likely development of the area.The effects of Deforestation are here.
1.Deforestation exposes the soil to the forces of wind and water especially on the foothills of the mountains. The upper layer of the soil is eroded away and leaves behind infertile coarse sand. With heavy rainfall the water gushes down the mountains carrying with it large quantities of silt and limestone.
2.With no trees to hold the soil together and slow down the water flow. The surface run off may cause heavy floods.
3.Cutting of trees disturbs the natural environment. The natural habitat is destroyed which results in the extinction of a number of valuable species and the wild life also gets disturbed.
4.With less vegetation there is less evapo-transpiration. The climate changes, in particular there is less rainfall, which may result in lower crop yields.