【摘要】 作为人口高度集聚的人工生态系统,城市生态系统的安全性更加具有脆弱性。该文选取了若干公认的反映城市生态安全水平指标,建立了类型识别的物元评判模型。应用于我国十大城市,得出以下结论:处于"较安全"的城市有南京市、深圳市、大连市;处于"临界安全"的城市有上海市、广州市、南昌市、合肥市;处于"不安全"的城市有天津市、武汉市。评价结果基本与实地相符,说明建立的物元评判模型是可行的。更多还原

【Abstract】 As one of populous artificial ecosystems in the ecology domain, the security of urban ecosystem is more fragile. This paper selects some indicators of city eco-security and constructs the model of matter-element evaluation, which is applied to ten Chinese cities and gets following conclusions: Nanjing, Shenzhen and Dalian are relatively safe;Shanghai, Guangzhou, Nanchang and Hefei are critically safe;other cities are not safe. The results basically coincide with facts, so the model is feasible.更多还原