Artificially Induced Hydrogeological Effects and Their Impact of Environments on Karst of North and South China

摘要

The basic hydrogeological conditions of karst areas of North and South China are discussed. Two major river development schemes and their potential hydrogeological and environmental impacts are considered: tlie Shanxi-Shaanxi Gorge (Wanjiazhai Water Project) of Yellow River in North China, and tlie Three Gorges Project of Yangtze River in South China. The water development constructions may have major hydrogeological witnin the geoecological environmental impacts. The detrimental factors include: karst leakage, earthquake, reservoir margin stability failure, dezertization and pollution etc. The benefits are electrical power generation, flood control and irrigation.