县域城市生态安全评价研究——以云南省沾益县为例

摘要

By using " Pressure-State-Response" (PSR) model put forward by UNEP and OECD, with Zhanyi County of Yunnan Province as the study object, the evaluating index system of city ecological safety was constructed, and the status of ecological safety in the county during 2004 - 2008 was evaluated by using principle component analysis method. The results showed that the general situation of ecological safety of Zhanyi County is declined, the role of response indicators in stress restoration is gradually increased. The advices for improving ecological safety level in Zhayi County were put forward.%采用联合国环境规划署(UNEP)和经济合作发展组织(OECD)所提出的“压力(Pressure) -状态(State) -响应(Respone)”(PSR)模型,以云南省沾益县为研究对象,构建县域(沾益县)城市生态安全评价指标体系,并应用主成分分析法对该县2004～ 2008年的生态安全现状做出评价.研究表明,云南省沾益县生态安全总体状况在下降,资源环境状态面对资源环境压力已经出现下降,目前的趋势表现其趋于压力的承受范围之外.响应指标在生态环境对胁迫恢复中的作用日益增强,生态环境压力强度较大,压力指标不断增大.并提出了提高云南省沾益县城市生态安全水平的建议.