土壤2012，Vol.44Issue(6)：1015-1020,6.
基于景观格局和土壤侵蚀敏感性的兰州市生态脆弱性评价
Analysis on Ecological Vulnerability of Lanzhou Based on Landscape Pattern and Soil Erosion Sensitivity
摘要
Abstract
The ecological vulnerability of Lanzhou was assessed by using a combined landscape pattern and ecosystem sensitivity approach. The vulnerability indexes of landscapes and the suitability indexes of regional ecological environment were developed by using the reciprocal of fractal dimension (FD), isolation (FJ), fragmentation (FN), sensitivity of soil erosion (SW). The network covering the whole study area was used to sample the spatial vulnerability of ecological environment, thus, the map of vulnerability distribution of the ecological environment was derived, and the spatial patterns of the vulnerability was analyzed. The results showed that: The vulnerability of various landscape types was in the order of grass land>farmland>unused lands>forest land>construction area>water area; Significantly positive relationships existed between FN and VI (vulnerability of landscape types), SW and VI, and they reflected the eco-envirortment well; There was a good agreement between the predicted and actual distribution of EVJ (ecological vulnerability index) zones. The establishment of relationships between landscape information and the regional ecological responses can offer a better way to analyze and assess regional eco-environment and therefore can offer a better guide for the ecological construction in the region.关键词
生态脆弱度/景观格局/生态敏感性/兰州市Key words
Index of vulnerability, Landscape pattern, Index of eco-sensitivity, Lanzhou分类
资源环境引用本文复制引用
潘竟虎,任梓菡..基于景观格局和土壤侵蚀敏感性的兰州市生态脆弱性评价[J].土壤,2012,44(6):1015-1020,6.基金项目
国家自然科学基金项目(41061017)资助. （41061017）
