摘要
将研究区分成一系列100 m×100 m的网格,获取每一单元网格内生态安全的各影响因子信息。然后通过各影响因子分析及生态安全评价模型的运算,逐个计算出各单元网格的生态安全指数,最终获得黄水河流域的生态安全现状分级。结果表明,研究区生态安全分级以安全和基本安全为主,分别占区域总面积比例的45.2%和39.6%,平均安全指数是69.7,属于基本安全的级别。
The study area was divided into a series of grid of 100 meters multiplied by 100 meters,and the information about the impact factors on eco-security in each grid was obtained.Then the ecological safety index of each unit grid was calculated through influence factor analysis and ecological safety evaluation models,and finally the ecological security situation grading of Yellow River basin was obtained.The result showed that the area gave priority to safety and basic security,which accounted for 45.2% and 39.6% of total study area,the average security index was 69.7,which belonged to the basic safety level.
出处
《安徽农业科学》
CAS
2012年第3期1672-1676,共5页
Journal of Anhui Agricultural Sciences
基金
山东省自然科学基金资助项目(Y2008E10)
中德科技合作项目(2007DFB70200)
关键词
污水灌溉区
生态安全评价
遥感
Sewage irrigation area
Ecological security assessment
RS
