Posted by Anup Baral May 07, 2016 :Many tree species occur over a wide range of altitude and ecological zones and they predominate in a given zone but may occur in zones above or below them. Classification based on ecological basis gives sufficient weightage to both vegetation and climate. Forest tree occur in very restricted areas have been omitted. The major forest types studied by J. K. Jackson (1994) are as under: Every year wildfires destroy considerable forest resources in Nepal. Such destruction includes both timber and non-timber forest products. Although quantitative information is not available, forest fires are definitely degrading biological diversity in Nepal’s forests. In addition, fires cause soil erosion and induce floods and landslides due to the destruction of the natural vegetation. Occasionally, embers from forest fires also cause fires in nearby villages, especially in the Terai region where the roofs are made of thatched grass. Many villages are burned every year with loss of lives, cattle and other property.At least one hundred villages are burned annually in Nepal, some of which are definitely destroyed by forest fires.