基于不同生物类群的河流健康评价研究

发布时间：2018-04-18 09:13

本文选题：多指标评价 + 鱼类　；参考：《水利学报》2016年08期

【摘要】：基于浑太河流域鱼类与大型底栖动物群落结构和功能层面上的指标,构建了多指标指数评价河流健康状况。首先,基于土地利用指数、水质和栖息地质量指数构建ILWHQ(Index of land use and water and habitat quality)指数定量筛选参照点位。然后,采用判别分析、逐步回归分析、相关分析筛选对不同压力响应敏感的核心参数。最后,采用比值法计算其多指标指数(MMI-HT)。结果表明:筛选了5个点位作为参照点,共确定8个(鲤科鱼类种类数、底栖鱼类比例、杂食性鱼类比例、耐受性鱼类个体比例、产沉性卵鱼类比例、产沉性卵鱼类个体比例、EPT、黏附者比例)核心参数构建多指标评价指数。底栖动物核心参数对底质中粗颗粒物、悬浮物和电导率变化响应更敏感,而鱼类核心参数对底质中细颗粒物、氮素、DO和Cl-浓度变化响应更敏感。二者对多重环境压力响应的敏感性不尽相同。太子河流域的35个点位中,9个为健康,6个为亚健康,7个为一般,7个为较差,6个为极差。浑河流域的19个点位中,没有点位属于健康状态,5个为亚健康,4个为一般,5个为较差,5个为极差。太子河流域较差和极差的点位共占37.14%,浑河流域较差和极差的点位共占52.63%。说明相比于太子河流域,浑河流域的健康状况较差。
[Abstract]:Based on the indexes of fish and macrobenthos community structure and function in the Hun Tai River Basin, a multiple index index was constructed to evaluate the river health status.Firstly, ILWHQ(Index of land use and water and habitat quality index was constructed based on land use index, water quality index and habitat quality index.Then, discriminant analysis, stepwise regression analysis and correlation analysis were used to screen the core parameters sensitive to different pressure responses.Finally, the multiple index (MMI-HT) was calculated by the ratio method.The results showed that five sites were selected as reference points, and 8 (Cyprinidae species, benthic fish, omnivorous fish, tolerant fish individuals, and sunken oval fish) were determined, and the results were as follows: (1) the number of fish species in Cyprinidae, the proportion of benthic fish, the proportion of omnivorous fish;The core parameters of individual EPTs (adherent ratio) were used to construct a multiple index evaluation index.The core parameters of benthos were more sensitive to the changes of coarse particles, suspended solids and electrical conductivity in the sediment, while the core parameters of fish were more sensitive to the changes of concentration of fine particles, nitrogen and Cl- in the sediment.Their sensitivity to multiple environmental pressure responses is different.Of the 35 points in the river basin, 9 were healthy, 6 were sub-health, 7 were general, 7 were poor and 6 were extremely poor.In the Hunhe River basin, none of the 19 points belong to the state of health, 5 are sub-health, 4 are general, 5 are poor and 5 are extremely poor.The poor and extremely bad points in the princeling River basin accounted for 37.14 points, and those in the Hunhe River basin accounted for 52.63 points.The results show that the health status of Hunhe river basin is worse than that of princeling river basin.
【作者单位】：河南理工大学资源环境学院;焦作大学化工与环境工程学院;北京师范大学水科学研究院水沙科学教育部重点实验室;
【基金】：国家自然科学基金项目(41401029) 河南理工大学博士基金项目(B2014-071) 河南省高校科技创新团队支持计划(15IRTSHN027)
【分类号】：X824

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