针对生态航道评价中存在的模糊、不确定性问题, 基于集对分析理论和层次分析法, 建立了五元联系数模 型, 根据生态航道评价指标体系各指标与等级标准的联系程度, 构造联系度公式, 结合层次分析法计算各评价指 标的权重, 运用该模型开展了长江下游南京- 浏河口段生态航道评价, 结果表明, 南京- 浏河口段生态航道等级 为 ó 级, 其中航运功能、自净功能和景观娱乐功能为? 级, 生态功能为? 级, 需要结合该河段实际情况加强生态 环境保护工作。敏感性分析表明, 功能层权重的小幅度波动不会对评价结果造成较大影响, 说明对该河段的评价 结果比较稳定。

Aiming at the fuzzy and uncertainty problems in ecolog ical wat erw ay assessment, w e built a five2element connectio n number model o n the basis of AHP ( Analy tic H ierar chy Pr ocess) method and the SPA ( Set Pa ir Analysis) . Accor ding to the co nnection between each index o f the eco log ical waterway assessment index sy st em and the g rade standard, we constr ucted the co nnection degr ee formula, and calculat ed the weight of each assessment index by AHP. The model w as applied t o assess the ec2 o lo gical waterway of Nanjing2Liuhekou reach in the low er r eaches of Yang tze River. T he r esults showed that the health condi2 tion of this ecolog ical w aterw ay w as in Gr ade " III" . The navig atio n functio n, self2purificat ion function, and landscape & enter2 tainment funct ion w ere in Grade " I", while the eco log ical function w as in Grade " IV". It is necessary to str eng then eco lo gical en2 v iro nmental pr otectio n o f the reach. A sensitivity ana lysis indicated that t he assessment results w ere not sensitive t o small2am2 plitude fluctuatio n o f the weig hts o f the function layer, sug g esting that the evaluation results of the Nanjing2Liuhekou reach wer e stable.

国家重点研发计划( 2016YFC0402102)