近年来,一些山丘区经济林发展很快,荒山、荒坡开发强度很大,但由于有乱砍滥伐等现象,造成大面积的植被破坏和水土流失。一些开发建设单位和个人,为了降低工程建设的成本,在建设 In recent years, the development of economic forest in some hill areas has been developing rapidly. The development of barren hills and barren slopes is very strong. However, due to deforestation and other deforestation, large-scale vegetation destruction and soil erosion have been caused. Some development and construction units and individuals, in order to reduce the cost of construction, construction