基于GIS格网技术的流域生态安全可视化评价  

Research on visual assessment of watershed ecological security based on GIS grid

作　　者：王耕[1] 吴伟[1] 

机构地区：[1]大连理工大学环境与生命学院

出　　处：《大连理工大学学报》2006年第5期667-672,共6页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(70073003);国家教育部博士学科点专项科研基金资助项目(20020141027);辽宁省教育厅青年基金资助项目(2004F010)

摘　　要：生态安全具有空间地域性.研究选取辽河流域90个县(市)区,借助地理信息系统(G IS)格网技术,基于“压力-状态-响应”(P-S-R)框架,讨论了基于G IS的流域生态安全可视化评价方法.评价结果与辽宁省环保局欧盟环境项目评价结果基本一致,表明利用格网单元表达生态安全影响因子的空间差异,比用行政单元的表达方式更接近于实际,可为环境管理和环境规划部门决策分析提供科学而直观的依据.Ecological security is of spatiality. The visual evaluation method of ecological security by GIS grid technique based on Pressure-State-Response is discussed by selecting 90 units of Liaohe River. The results are consistent with those of current water quality prediction of EU-Liaoning Integrated Environmental program by and large. So the spatial differences of ecological security factors can be reflected more correctly by grid unit than by regional unit. The method provides scientific and intuitional references for decision-making of environment management and environment planning department.

关 键 词：GIS 生态安全 可视化 评价 

分 类 号：X171.1[环境科学与工程—环境科学]