西南喀斯特地区土壤侵蚀研究综述

中国西南喀斯特地区的土壤侵蚀问题倍受关注。本文针对喀斯特地区的土壤侵蚀研究现 状, 从喀斯特地区土壤侵蚀的格局研究、机理研究和生态恢复研究三个方面, 综合论述了近几十 年来有关喀斯特地区土壤侵蚀研究成果和进展。对喀斯特地区土壤侵蚀的区划、分类和分级研究 进行归纳, 将机理研究从自然因素和自然过程、人文因素和人文过程两个角度进行总结, 阐述了 喀斯特地区受损土地的生态恢复与重建研究, 指出目前研究中所存在的问题, 以及今后的主要研 究方向。

Gener al Review of Soil Erosion in the Kar st Ar ea of Southwest China

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.