我国是世界上水土流失严重的国家之一 ,三分之一以上的国土存在不同程度的水土流失 ,水土流失面积大 ,分布广 ,危害重 ,治理难 ,成为经济社会可持续发展的重要制约因素。新中国成立 5 0多年来 ,党和国家高度重视水土保持生态环境建设 ,颁布了《中华人民共和国水土保持法》 ,加 China is one of the countries with serious soil erosion in the world. More than one third of the country has different degrees of soil and water loss, with large area, wide distribution, serious damage and difficult management. It has become an important constraint for sustainable economic and social development . In the 50 years since the founding of New China, the party and the state have attached great importance to the construction of the ecological environment for soil and water conservation and promulgated the Law of the People’s Republic of China on Soil and Water Conservation