• 研究报告 •

### 三江源地区生态环境脆弱性评价

1. 1山东科技大学测绘科学与工程学院， 山东青岛 266590； 2北京师范大学地理学与遥感学院， 北京 100875）
• 出版日期:2015-07-10 发布日期:2015-07-10

### Evaluation of ecological environment vulnerability for Sanjiangyuan area.

WEI Jing1, GUO Ya-min2**, SUN Lin1, JIANG Tao1, TIAN Xin-peng1, SUN Guang-de1

1. (1Geomatics College, Shandong University of Science and Technology, Qingdao 266590, Shandong, China; 2School of Geography, Beijing Normal University, Beijing 100875, China）
• Online:2015-07-10 Published:2015-07-10

Abstract: The ecological situation in Sanjiangyuan area has an important influence on China’s national economy and ecology. Besides, studies on the ecological environment vulnerability also have its own theoretical and practical significance. Based on ecological sensitivityresiliencepressure (SRP) conceptual model, we selected sixteen evaluation indices (including temperature, precipitation, topography, etc.) and established the indicators system of ecological vulnerability evaluation in Sanjiangyuan area using the AHP method and the principal component analysis (PCA) method. Through calculating the ecological environment vulnerability index (EEVI), we conducted vulnerability analysis and evaluation of ecological environment in the study area. The results showed that, in the study area, moderately vulnerable areas occupied 45.55% of the total, while the slightly, lightly, heavily and extremely vulnerable areas occupied 5.76%, 23.12%, 20.14% and 5.43% respectively. The heavily and extremely vulnerable areas are primarily located in the bare soil and low vegetation coverage zones of the northwest part of Sanjiangyuan area and in the northeast part under the greater pressure of large population and economic activities.