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DOI: https://doi.org/10.11988/ckyyb.20241243

基于底栖动物完整性指数的张掖市境内河流水生态健康评价

  • 李航 , 1, 2 ,
  • 郭伟杰 1, 2 ,
  • 刘晗 1, 2 ,
  • 李鲁丹 1, 2 ,
  • 贡丹丹 1, 2 ,
  • 梁木 1, 2 ,
  • 乔强龙 1, 2 ,
  • 杜琦 1, 2 ,
  • 赵伟华 , 1, 2
展开
  • 1.长江科学院 流域水环境研究所，武汉 430010
  • 2.长江科学院 流域水资源与生态环境科学湖北省重点实验室，武汉 430010
赵伟华（1982—），男，陕西扶风人，正高级工程师，博士，主要从事流域水环境保护与治理研究。E-mail：

李 航（1997—），女，湖北潜江人，助理工程师，硕士，主要从事水环境保护与水生态修复研究。E-mail：

收稿日期: 2024-12-03

  修回日期: 2025-06-19

  网络出版日期: 2025-07-09

收起

Assessment of River Aquatic Ecological Health within the Zhangye City Based on Benthic Macroinvertebrate Index of Biological Integrity

  • LI Hang , 1, 2 ,
  • GUO Wei-jie 1, 2 ,
  • LIU Han 1, 2 ,
  • LI Lu-dan 1, 2 ,
  • GONG Dan-dan 1, 2 ,
  • LIANG Mu 1, 2 ,
  • QIAO Qiang-long 1, 2 ,
  • DU Qi 1, 2 ,
  • ZHAO Wei-hua , 1, 2
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  • 1. Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan 430010, China
  • 2. Hubei Provincial Key Laboratory of River Basin Water Resources and Eco-environmental Sciences, Changjiang River Scientific Research Institute, Wuhan 430010, China

Received date: 2024-12-03

  Revised date: 2025-06-19

  Online published: 2025-07-09

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摘要

张掖市作为中国西北地区的重要生态屏障，其河流水生态健康对区域生态安全具有至关重要的作用。为全面掌握张掖市境内河流在不同水期的水生态健康状况，本文基于2023年对张掖市境内7条河流全河段136个采样点的底栖动物调査数据，构建了张掖市境内河流底栖动物生物完整性评价指标体系。本次调查涵盖了丰水期和枯水期，共鉴定出底栖动物5门8纲17目51科159种。研究结果表明，节肢动物在两个水期中均为绝对优势类群，特别是四节蜉属（Baetis sp.）和直突摇蚊属（Orthocladius sp.）。底栖动物生物完整性指数（B-IBI）评价结果显示，各河流整体水生态健康状况较好，不同水期之间的健康状况差异不大，枯水期和丰水期的“健康”点位占比分别为42.39%和42.71%。本研究结果可为张掖市生态保护与管理提供科学依据。

关键词： 底栖动物; 生物完整性指数; 健康评价; 群落结构; 张掖市

本文引用格式

李航 , 郭伟杰 , 刘晗 , 李鲁丹 , 贡丹丹 , 梁木 , 乔强龙 , 杜琦 , 赵伟华 . 基于底栖动物完整性指数的张掖市境内河流水生态健康评价[J]. 长江科学院院报, 0 . DOI: 10.11988/ckyyb.20241243

Abstract

Objectives： Zhangye, a vital ecological barrier in Northwest China, has river water ecosystem health that is of critical importance to regional ecological security. In order to achieve a comprehensive understanding of the aquatic ecological health of rivers in Zhangye City across different seasons, seven representative rivers were selected for study.

Methods： A 2023 survey of benthic macroinvertebrates was conducted across 136 sampling sites along seven rivers in Zhangye City. The benthic macroinvertebrate-based biological integrity index system of rivers in Zhangye City was constructed by selecting 23 candidate biological parameters of five categories that became more sensitive with the increase of disturbance intensity. The B-IBI values of each river were then calculated in different seasons to evaluate the health status of each river.

Results： A total of 159 species of benthic fauna were identified across both the wet and dry seasons. These species belonged to 5 phyla, 8 classes, 17 orders and 51 families. Arthropods were the dominant taxa in both seasons, especially Baetis sp. and Orthocladius sp.. The analysis revealed a significant difference in benthic macroinvertebrate communities between dry and wet seasons across rivers in Zhangye City (r = 0.09, p < 0.05). The results of the B-IBI demonstrated that the overall ecological health of the rivers was satisfactory, with minimal variation in the health of different seasons. The proportion of sites classified as "healthy" during the dry and wet seasons was found to be 42.39% and 42.71%, respectively.

Conclusions： Despite the present relatively favourable state of aquatic ecological health in Zhangye, there remains a risk of ecological degradation as a result of ongoing climate change and human activities. In order to enhance the stability and health of the river ecosystem, it is necessary to strengthen the monitoring and management of river ecosystems, optimise the allocation of water resources, and conduct further research on the long-term adaptability of benthic macroinvertebrate communities to extreme weather events and human activities.

Key words： benthic macroinvertebrates; index of biological integrity; health assessment; community structure; Zhangye City

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