中国土地退化的分类与分级  

Classification and Grading of Land Degradation in China.

作　　者：沈渭寿[1] 曹学章[1] 沈发云[1] 

机构地区：[1]国家环境保护总局南京环境科学研究所国家环境保护总局荒漠化研究中心,江苏南京210042

出　　处：《生态与农村环境学报》2006年第4期88-93,共6页Journal of Ecology and Rural Environment

基　　金：科技部科技基础条件平台项目(2004DEA71160);科技部社会公益研究专项(2005DE101638)

摘　　要：在参照国际上土地退化评价指标体系的基础上,结合中国实际,从代表性、普遍性和可操作性原则出发,提出了中国土地退化的初步分类与分级标准。中国土地退化可划分为风蚀作用下的土地退化、水蚀作用下的土地退化、物理退化和化学退化4类,土地退化程度分为轻度、中度、强度和极强度退化4级,并拟定4类土地退化的评价标准。Based on reference to some evaluation criteria of land degradation which are commonly used in some international organizations, and the principle of representativeness and universality and serviceability, a tentative standard is worked out for classification and grading of land degradation in China. According to the standard, the land degradation in China has been divided into 4 categories, i.e. wind-induced land degradation, water-induced land degradation, physical land degradation and chemical land degradation. The extent of land degradation in China has also been divided into 4 grades, i.e. light, medium, strong and extremely strong. The evaluation criteria for categorizing and grading are proposed.

关 键 词：土地退化 分类 退化程度 分级 

分 类 号：X37[环境科学与工程—环境工程]