Li Xiao-Li, Zeng Guang-Ming, Shi Lin, Liang Jie, Cai Qing
Ministry of Education Key Laboratory of Environmental Biology and Pollution Control, College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
Ying Yong Sheng Tai Xue Bao. 2010 Feb;21(2):415-21.
In this paper, a hierarchy index system suitable for catastrophe progression method was constructed to comprehensively analyze and evaluate the status of ecological land construction in Changsha City in 2007. Based on the evaluation results, the irrationalities of the distribution pattern of Changsha urban ecological land were discussed. With the support of geographic information system (GIS), the ecological corridors of the urban ecological land were constructed by using the 'least-cost' modeling, and, in combining with conflict analysis, the optimum project of the urban ecological land was put forward, forming an integrated evaluation system. The results indicated that the ecological efficiency of urban ecological land in Changsha in 2007 was at medium level, with an evaluation value being 0.9416, and the quantitative index being relatively high but the coordination index being relatively low. The analysis and verification with software Fragstats showed that the ecological efficiency of the urban ecological land after optimization was higher, with the evaluation value being 0.9618, and the SHDI, CONTAG, and other indices also enhanced.
本文构建了适用于突变级数法的层次指标体系，对2007年长沙市生态用地建设状况进行综合分析与评价。基于评价结果，探讨了长沙城市生态用地分布格局的不合理之处。在地理信息系统（GIS）支持下，采用“成本最低”模型构建城市生态用地生态廊道，并结合冲突分析，提出城市生态用地优化方案，形成综合评价体系。结果表明，2007年长沙市城市生态用地生态效率处于中等水平，评价值为0.9416，数量指标较高但协调指标较低。利用软件Fragstats进行分析验证表明，优化后的城市生态用地生态效率更高，评价值为0.9618，SHDI、CONTAG等指标也有所提高。
