• 资源生态 •

### 中国生态环境敏感区评价

1. 1. 中国环境科学研究院,北京 100012;
2. 环境保护部 南京环境科学研究所,南京 210042
• 收稿日期:2014-09-15 修回日期:2015-01-23 出版日期:2015-10-15 发布日期:2015-10-15
• 通讯作者: *通信作者简介：高吉喜（1964- ）,男,内蒙古呼和浩特人,博士,研究员,主要从事区域生态保护与修复、生态红线划定与生态安全格局研究。E-mail: gjx@nies.org
• 作者简介:刘军会（1976- ）,男,河北保定人,博士,副研究员,主要从事生态遥感与全球变化研究。 E-mail: liujh@craes.org.cn
• 基金资助:
国家高技术研究发展计划（2012AA12A310）; 国家环境保护公益性行业科研专项（201209027,201109025）

### Evaluation of Ecological Sensitivity in China

LIU Jun-hui1, GAO Ji-xi2, MA Su1, WANG Wen-jie1, ZOU Chang-xin2

1. 1. Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
2. Nanjing Institute of Environment Sciences, Ministry of Environmental Protection, Nanjing 210042, China
• Received:2014-09-15 Revised:2015-01-23 Online:2015-10-15 Published:2015-10-15

Abstract: Three typical factors including land desertification, soil erosion and rocky desertification are selected to establish the evaluation model of eco-environmental sensitivity by integrating the technologies of RS and GIS in the present study. This paper conducts comprehensive research on eco-environmental sensitivity, reveals its spatial features in quantitative way and defines the redline of ecological sensitivity in China. The results are as follows: 1) the moderate sensitivity is the main type of land desertification. The surrounding areas of deserts in semiarid areas of northern China are the most sensitive areas. This is due to the strong wind in winter and spring in these areas, and the soil that mainly consists of sand and is seldom covered by vegetation is also the reason. 2) The slight sensitivity and insensitive areas take great proportion in soil erosion. The southwestern and southeastern parts of China and loess hilly regions are the most environmental sensitive areas, which is mainly the result of the abrupt slopes and spatial variation of precipitation. 3) The insensitive area is the main type of rocky desertification. The karst areas of southwest China are the most sensitive areas. 4) The main types of comprehensive eco-environment sensitivity in the study area are slight, insensitive and moderate. The comprehensive eco-environment sensitivity in northwestern, southwestern, southeastern parts of China and loess hilly region is higher than other areas in China. 5) Based on the evaluation results of comprehensive eco-environment sensitivity, taking the extreme sensitive areas as the ecological redline areas, this paper uses top-down method to define the redline of eco-fragile areas in China. Three types and 23 important ecological redline areas are delimited across the country, and the ecological redline areas make up about 12.86% of the study area.

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