Nepal and its environment

The remarkable difference in altitude found in Nepal consequence in a diversity of bio mes, from tropical savannas all along the Indian border, to subtropical broad leaf and coniferous forests in the Hill Region, to temperate broad leaf and coniferous forests on the slopes of the Himalaya, to montane grasslands and shrub lands and rock and ice at the highest elevation.
At the lowest elevations is the Terai-Duar savanna and grasslands ecoregion. These form a assortment with the Himalayan subtropical broad leaf forests, which occur from 500 to 1,000 meters (1,600 to 3,300 ft) and include the Inner Terai Valleys. Himalayan subtropical pine forests occur between 1,000 and 2,000 meters (3,300 and 6,600 ft).
Above these elevations, the bio-geography of Nepal is normally separated from east to west by the Gandaki River. Eco-regions to the east tend to receive more rainfall and to be more species-rich. Those to the west are drier with fewer species.