河北丰宁是潮河、滦河的发源地,是京津地区饮用水的重要水源地,同时也是首都防御北部风沙的生态屏障。由于近些年持续干旱和经济社会的发展,引发了水土流失、生态退化、水源水量减少等一系列生态问题。 Fengning, Hebei Province, is the birthplace of Chao River and Luan River, and is an important water source for drinking water in Beijing and Tianjin. It is also the ecological barrier of the sandstorms in the northern part of the capital. Due to the continuous drought in recent years and the economic and social development, a series of ecological problems such as soil and water loss, ecological degradation and reduction of water source and water have been triggered.