黄龙山位于陕北黄土高原的东南部,是典型残留植被保存较好的次生林区,也是黄河中游的水源林区。它除能提供一定数量的木材外,并对周围地区的农业起着保障作用。故从生态上了解黄龙山植被保持水土的机理与作用,能为经营次生林和营造水土保持林、水源涵养林提供科学依据。 Huanglong Mountain is located in the southeastern part of the Loess Plateau in northern Shaanxi. It is a secondary forest area well preserved by typical residual vegetation and a water source forest area in the middle reaches of the Yellow River. Apart from providing a certain amount of wood, it is also a safeguard for agriculture in the surrounding area. Therefore, the ecological understanding of the mechanism and function of Huanglongshan vegetation to maintain soil and water can provide a scientific basis for the management of secondary forests and the construction of water and soil conservation forests and water conservation forests.