Integrated Restoration of Small Watershed in Karst Regions of Southwest China
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Karst is a type of landscape which forms under a specific combination of geological conditions, precipitation, and temperature (Fleury 2009). It contains caves and extensive underground water systems that develop from especially soluble rocks such as limestone, marble, and gypsum (Ford and Williams 2007). Karst regions have always been characterized by environmental problems such as an impoverished ecosystem, soil degradation and erosion, deterioration of water quality and landform destruction (Urich 2002). Thus, a karst region can be considered among the most vulnerable land systems in the world.
The Karst mountainous region of Southwest China is one of the largest karst continuum belts in the world (Huang et al. 2008). Karst geomorphology is mainly concentrated in the Yunnan, Guizhou, and Guangxi provinces. There, the karst system experienced rocky desertification, a process of land degradation whereby an area formerly covered by vegetation and soil is transformed into a rocky...
KeywordsKarst Region Rocky Desertification Karst Rocky Desertification Ecosystem Recovery Chinese Central Government
This research was supported by the Project (2011BAC09B08-04) of the Ministry of Science and Technology of the People’s Republic of China, and the State Scholarship Fund of China (2011601220). The paper was completed also with support from the Center for International Earth Science Information Network (CIESIN), Columbia University, USA. The authors would like to thank Robert Chen and Mark Becker of CIESIN, and Bo Söderström of Royal Swedish Academy of Sciences, for their constructive suggestions and comments, which are very useful for improving this paper. The authors also thank Elisabeth Sydor of CIESIN for her editing assistance.
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