【摘要】 云南小江流域是我国南方土地荒漠化的典型地区 ,是第四纪地质环境人工再造作用的结果。主要表现为土壤退化 ,土地沙石化、石质化和劣地化 ,面积达 70 0 0hm2 。造成土壤肥力下降 ,土地资源、生物资源遭到破坏 ,制约社会经济发展。要改变上述面貌 ,必须做好规划 ,因地制宜 ,突出重点 ,分批治理 ;实行异地开发移民措施 ,积极进行水土保持型生态农业建设 ;加强法制观念 ,强化预防监督措施 ,控制人口增长等。更多还原

【Abstract】 The Xiaojiang Valley of Yunnan is a distinct area of desertification in South China resulting from man-made Quaternary environment reconstruction.An area of 7000hm 2 has become the sandy and rocky land with degraded soil.The land becomes infertile and the bio-resources are destroyed.The social and economic development is thus restricted.Measures such as rationalizing population immigration,conserving water and soil,enhancing legal awareness,reinforcing preventive supervision and controlling the population should be taken to solve the problem.更多还原