关键词: 岩溶荒漠化, 碳酸盐岩, 土壤侵蚀, 防治措施, 贵州

Abstract: Karst desertification is a main eco-environmental problem in Guizhou karst area and it exerts serious disadvantage to the productivity of land. Karst desertification is the result of intercourse between the erosion of carbonate rock and human activities. This paper analyses the geological background of carbonate regional erosion in Guizhou and regards the characters of carbonate rock erosion, the landform, the ecological environment and the rule of movement on eroded soil as the natural base of karst desertification. The main types of excessive human activities and their reasons are discussed here, too. On the basis of these, some countermeasures of prevention and harness are proposed.

Key words: karst desertification, carbonate, soil erosion, prevention and harness, Guizhou