| 中国土地退化的分类与分级 |
| |
| 引用本文： | 沈渭寿,曹学章,沈发云.中国土地退化的分类与分级[J].生态与农村环境学报,2006,22(4):88-93. |
| |
| 作者姓名： | 沈渭寿 曹学章 沈发云 |
| |
| 作者单位： | 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 |
| |
| 基金项目： | 科技部科技基础条件平台项目;科技部社会公益研究项目 |
| |
| 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。
|
| 关 键 词： | 土地退化 分类 退化程度 分级 |
| 文章编号： | 1673-4831(2006)04-0088-06 |
| 收稿时间： | 2006-06-17 |
| 修稿时间： | 2006年6月17日 |
Classification and Grading of Land Degradation in China |
| |
| SHEN Wei-shou,CAO Xue-zhang,SHEN Fa-yun.Classification and Grading of Land Degradation in China[J].Journal of Ecology and Rural Environment,2006,22(4):88-93. |
| |
| Authors: | SHEN Wei-shou CAO Xue-zhang SHEN Fa-yun |
| |
| Institution: | Nanjing Institute of Environmental Science, State Environmental Protection Administration, Nanjing 210042, China |
| |
| Abstract: | 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. |
| |
| Keywords: | land degradation classification degree of degradation grading |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
