沙漠化问题研究综述

沙漠化是当今世界干旱、半干旱地区面临的严重的生态、社会和经济问题之一。在查阅大量文献的基础上,详细评述了沙漠化的概念及其在时间、空间、内容、景观、发展趋势、结果上等的内涵;总结了国内外沙漠化的监测评价指标体系、分级及其在世界上的分布;在沙漠化问题争论焦点之一的沙漠化成因上,综合了各家的观点,归纳为干旱气候和大风的自然原因及不合理的“六滥”人为原因;同时对全球变暖和沙漠化之间的相互关系也做了概述;最后对沙漠化的防治方法、根本途径等方面问题进行了系统的总结。

An Overview of Study on Sandy Desertification

Desertification is one of the most serious ecological,social and economic problems in arid and semi-arid regions in the contemporary world.Based on referring to a large amount of literature,we have narrated and commented the concept of desertification in detail and its connotation from time,space,content,landscape,development tendency and results of sandy desertification in this article,and have particularly outlined the domestic and foreign desertification monitoring appraisal target system,graduation and its distribution in the world.On one of the focal arguments point of the causes of desertification,we have synthesized various viewpoints and finally summarized as natural reason and artificial reason,such as drought climate,gale and unreasonable human being's "six excesses" activities.Simultaneously we have outlined the interaction between global warming and desertification.In the end,the preventing and controlling methods,basic ways of desertification and some questions like these have also been summarized systemically.