Gener al Review of Soil Erosion in the Kar st Ar ea of Southwest China
西南喀斯特地区土壤侵蚀研究综述

The ecosystem fragibility in the Karst area of Southwest China has been pay more and more attention to recently,especially of soil erosion.It is the most important question in this area to improve the environment capability and disaster carrying capability.The southwest Karst area of China is located in the center of the east~Asia Karst area,one of the three largest Karst areas in the world.Karst environment is very fragile and soil is in severe erosion and degradation,and the local people must confront with the concentrated poverty population and the lack of cultivated land.The development in Karst area in Southwest China is also easy to plunge into a vicious circle of poverty and environmental degradation.On the severe environmental question of soil erosion and degradation in the Southwest Karst area,primary achievement had been briefly reviewed in this paper in three aspects: current research,mechanism study and ecology reconstruction.The regionalization and classification of soil erosion in Karst area are presented.And this paper also generalizes the reason research of soil erosion in physical process and humanistic process,as well as the approaches of ecological restoration and reconstruction of the eroded land in Karst area.Some existing problems in this research field at present have been expounded and efficient research approaches and methods for soil erosion and ecological reconstruction in Karst area are put forward.