基于PSR模型的南水北调中线主干渠沿线区域生态环境评价

结合生态环境状况指数和修正后的“压力-状态-响应”（PSR）模型，从环境质量状况以及生态安全两个角度分析出发，分别考虑自然影响以及自然、经济、社会三者的协同作用，构建了适用于描述南水北调中线主干渠沿线地区生态环境状况的综合评价指标体系。研究结果表明：评价期内环境质量状况评价等级中，只有鲁山县处于“良”，安阳市“较差”，其他县区均为“一般”；生态安全评价方面，只有淅川县处于较安全状态，其他处于预警和中度预警状态，占研究区总面积的97.54%，中度预警占16.28%。总的来看，2014年研究区生态环境质量整体水平一般，综合生态安全形势不容乐观，需要政府部门加大对主干渠沿线输水地段人类活动的监管力度。 Based on the ecological index and the modified press-state-response model, approaching from the two perspectives of environmental quality and ecological security, this paper has successfully constructed a synthetic evaluation index system which can be used to evaluate the eco-environmental situation in regions along the main canal of the Middle Route Project for South-to-North Water Transfer after respectively considering the natural influence and the combined influence of nature, economy, and society. The results indicated that according to the assessment of environmental quality during the entire evaluation period, only Lushan County was "good" and Anyang City was “relatively poor” while all the other regions were “average”. Besides, according to the ecological security assessment, Xichuan County was the only one in a relatively secure state while 97.54 percent of the study area were in an early or moderate warning state, with the moderate-warning regions accounting for 16.28%. Generally speaking, the eco-environmental quality of the study area in 2004 was merely average, and the ecological security situation was worrying; therefore, the government should improve supervision to limit human activities in the study area. 河南省科技攻关计划项目(142102310308,152102210044), 河南省基础与前沿技术研究计划项目(142300410064)