摘要
针对城市河流水体污染严重、水生态系统破坏加剧等突出问题,以南京市江宁区牛首山河为例,通过监测水质、浮游植物、底柄动物、重金属等指标的变化情况,选取了11项指标作为水生态安全评估的指标,为了减少主观W素对于指标权重确定的影响,采用基于熵值法-物元可拓评估模型进行牛首山河水生态安全状况评估,结果表明:牛首山河水质状况中等,藻类密度远超标准限值,生物多样性较差,其水生态安全状况综合评估等级在IV^V级之间,与牛首山河实际情况相吻合,研究成果对江宁区河流水生态修复与保护具有一定的指导作用.
In view of the severe problems of serious pollution of urban river waters and intensified damage of water ecosystems,the Niushoushan River in Jiangning District of Nanjing City was taken as an example,11 water ecological evaluating indicators were selected by monitoring the changes of water quality,phytoplankton,benthic animals and heavy metals.In order to reduce the influence of subjective factors on the determination of index weights,the entropy method-material element extension evaluation model was used to evaluate the water ecological security status of the Niushoushan River.The results showed that the water quality of Niushoushan River is moderate,the algae density far exceeds the standard limit,and the biodiversity is poor.The comprehensive assessment level of water ecological security status is between IV and V,which is consistent with the actual situation.This study helps guiding the water ecological restoration and protection in Jiangning District.
作者
黄昌硕
盖永伟
吴京
HUANG Changshuo;GAI Yongwei;WU Jing(State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Jiangsu Water Resources Service Center,Nanjing 210029,China)
出处
《水资源与水工程学报》
CSCD
2019年第5期14-20,共7页
Journal of Water Resources and Water Engineering
基金
国家重点研发计划项目(2018YFC0406505)
关键词
河流水生态监测
水生态安全评估
城市河流
牛首山河
南京市江宁区
river water ecology monitoring
safety assessment of river water ecology
urban river
Niushoushan River
Jiangning District of Nanjing City
