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Journal of Desert Research ›› 2023, Vol. 43 ›› Issue (2): 271-280.DOI: 10.7522/j.issn.1000-694X.2022.00143

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Evaluation of aquatic ecosystem health in the middle and upper reaches of the Heihe River based on macrobenthic integrity index

Yang Zhan1(), Shuang Wang2, Jiping Chen4, Yu Wang2,3, Yupeng Wang5   

  1. 1.The Center of Water Conservancy Project Construction Cost and Regulation Fee Management,Gansu Province Water Resources Department,Lanzhou 730046,China
    2.College of Energy and Power Engineering /, Lanzhou University of Technology,Lanzhou 730050,China
    3.Key Laboratory of Energy Supply System Drived by Biomass Energy and Solar Energy, Lanzhou University of Technology,Lanzhou 730050,China
    4.Hydrologic Station of Gansu Province,Lanzhou 730000,China
    5.Linshui Water Conservancy Management office of Honglin Irrigation Area,Suzhou District of Jiuquan City,Jiuquan 735000,Gansu,China
  • Received:2022-08-15 Revised:2022-12-12 Online:2023-03-20 Published:2023-04-12

Abstract:

To investigate the health status of alpine inland rivers in China, macrobenthos and water samples were collected in July 2019, August 2020 and July 2021 in the upper and middle reaches of the Heihe River. The distribution range and discriminatory ability of biological parameters, as well as correlation analysis were used to construct a B-IBI evaluation system of the Heihe River. The Heihe B-IBI evaluation system was constructed, which was composed of the total number of taxa, the number of aquatic insect taxa, the top three dominant taxa, the percentage of predators, the percentage of sensitive taxa, and the percentage of pollution-tolerant taxa. The results showed that: (1) the river health evaluation grade of the Black River was obtained based on the ratio method: B-IBI>3.28 was healthy, 2.46<B-IBI<3.28 was good, 1.64<B-IBI<2.46 was fair, 0.82<B-IBI<1.64 was poor, and B-IBI<0.82 was very poor. (2) Both the B-IBI evaluation system and the BI index results show that the middle reaches of the Heihe River is in good condition.

Key words: Heihe River, macrobenthos, community structure, environmental factors

CLC Number: