CAJ | 학술논문

采用"驱动力-压力-状态-影响-风险"模型,选取14项指标,构建洞庭湖生态安全评价指标体系.利用层次分析法确定各指标的权重,运用生态安全度计算模型,对2000,2005,2007年洞庭湖生态安全状况进行分级评价.结果表明,与20世纪80年代相比,2000年洞庭湖区评价级别处于安全状态;2007年处于一般状态,生态安全状态水平下降,状态得分值仅为基准年的57.2%.对状态做进一步分析可知,TP和Chl.a是造成洞庭湖水生态状况恶化的主要原因.
채용"구동력-압력-상태-영향-풍험"모형,선취14항지표,구건동정호생태안전평개지표체계.이용층차분석법학정각지표적권중,운용생태안전도계산모형,대2000,2005,2007년동정호생태안전상황진행분급평개.결과표명,여20세기80년대상비,2000년동정호구평개급별처우안전상태;2007년처우일반상태,생태안전상태수평하강,상태득분치부위기준년적57.2%.대상태주진일보분석가지,TP화Chl.a시조성동정호수생태상황악화적주요원인.
An ecological security index (ESI) system of Lake Dongting was constructed with 14 indices, according to the driving force-pressure-state-impact-risk model. The weights of the indices were determined by analytical hierarchy process (AHP), and the ecological security status classification was evaluated by the ESI model for the years of 2000, 2005 and 2007. The ecological security was ranked as the safe grade in 2000 and the general grade in 2007, indicating a decrease in ecological security. In 2007, compared to the benchmark, the status score was only 57.2%. With further analysis, the TP and Chl.a were the main reason for the water deterioration of the Lake Dongting.