我国西南岩溶地区石漠化问题研究--以滇黔桂三省区为例

以云南、贵州和广西3省区为对象分析了我国西南岩溶地区石漠化的现状,研究了西南岩溶地区石漠化的机理.结果表明,广泛分布的碳酸盐岩是形成石漠化的地质背景;崎岖的地表为石漠化提供了动力;成土缓慢且土层薄使其允许侵蚀量小;受气候因素的影响岩溶地貌发育使土壤易“丢失”;人口的增长及不合理的行为导致植被破坏后恢复困难,易造成水土流失.在此基础上提出了石漠化的治理措施.

Research on rocky desertification of karst area in the southwest of China

The condition of rocky desertification in the karst region of the southwest of China is analysed based on three provinces of Yunnan,Guizhou and Guangxi.The mechanism of rocky desertification in the region is studied.The results show that widely distributing carbonate rock is background of geology that caused rocky desertification;the rugged surface of the earth provide a drive for rocky desertification;the amount of the eroded soil that allowed is small because of the slow formation of soil and thin soil layer;the karst physiognomy affected by the climte is so well developed that soil is easily dropped into the underground;the increasing of population and unreasonable human activities result in vegetation to be destroyed,and it is difficulty to be restored,which cause loss of soil and water.The author put forward a series of measures of governing rocky desertification.