基于突变级数法的千岛湖流域生态安全评价

被引:7
作者
李亚男 [1 ]
俞洁 [2 ]
王飞儿 [1 ]
申开丽 [2 ]
机构
[1] 浙江大学环境与资源学院环境保护研究所
[2] 浙江省环境监测中心
关键词
突变理论; 突变级数法; PSR模型; 生态安全评价; 千岛湖;
D O I
暂无
中图分类号
X826 [生物评价、生态评价];
学科分类号
1402 ;
摘要
针对千岛湖流域生态系统退化、生态安全受到威胁的现状,对千岛湖流域生态安全进行了综合评价,以识别影响流域生态安全的主要因素.研究引入了基于突变理论的多准则评价方法——突变级数法,基于压力-状态-响应(PSR)模型构建了由15个相关指标组成的评价指标体系,对千岛湖流域2008~2011年间的生态安全进行了全面评估.评估结果表明,2008~2011年间,千岛湖流域生态安全2010年达到较安全级别,其他年份均处于基本安全的级别.相对而言,压力系统的安全度最低,状态系统安全度最佳.研究结果表明,虽然目前千岛湖流域生态安全状况较好,但总体状况、压力和响应指标都显示出下降的趋势,说明千岛湖面临着较大的安全压力.
引用
收藏
页码:689 / 695+724 +724
页数:8
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