| 大型底栖动物快速生物评价指数在城市河流生态评估中的应用 |
| Application of Rapid Bioassessment Indices of Macroinvertebrates in Ecological Evaluation of Urban Streams |
| 投稿时间：2019-12-17 修订日期：2020-04-26 |
| DOI：10.15928/j.1674-3075.201912170313 |
| 中文关键词:大型底栖动物 快速生物评价 城市河流 耐污性 多参数方法 |
| 英文关键词:macroinvertebrate rapid bioassessment urban stream pollution tolerance multi-metrics method |
| 基金项目:龙岗河坪山河两河流域综合治理方案编制、坪山河干流综合整治及水质提升工程（CSCEC-PSH-2017-01） |
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| 中文摘要: |
| 为提供更加全面和有效的生态评估方法，用以指导城市河流修复和保护，2017年3-4月选择深圳典型城市化区域河流，设置21个监测样点，开展大型底栖动物快速生物评价指数的适用性研究。分别选择生物多样性指数、群落结构指数、敏感性指数和耐污性指数，在评估不同指数适用性的基础上，筛选和构建用于城市河流健康评价的大型底栖动物快速生物评价综合指数。结果表明，龙岗河大型底栖动物共采集到28科43种，寡毛类是龙岗河的主要优势类群。基于底栖动物群落结构特征对6个大型底栖动物快速生物评估指数进行了比较和分析，其中3种指数较适用于龙岗河城市河流健康评估。在考虑各参数离散度和相关性的前提下，可选择物种数、寡毛类相对丰度和科级耐污生物指数（Family Biotic Index，FBI）构建综合指数用于深圳市河流快速生物评价。健康评价的结果表明龙岗河2个样点为“理想状态”，6个样点属于“亚健康”等级，其余13个样点处于“不健康”和“病态”。我国城市河流的有机污染总体较重，以大型底栖动物耐污类群或者敏感类群构建的快速生物评价指数能够较为灵敏地指示河流生态修复成效。 |
| 英文摘要: |
| Bioassessment is now widely used in the protection and management of the river ecosystems. Rapid bioassessment of freshwater ecology, based on macroinvertebrates, is widely applied because of its low cost and reliability. In this investigation, Longgang River, a subtropical urban stream of Shenzhen City, was selected for a case study. Six macroinvertebrate indices were compared to identify those most suitable for rapid bioassessment of urban river ecosystems. The indices found to be most appropriate were then integrated to give a multi-metric index. The suitability of the resulting index for evaluating urban river health was tested by application to the Longgang River. The aim of the study was to provide a comprehensive and reliable evaluation method to support conservation and restoration of urban rivers. In March and April of 2017, macroinvertebrate monitoring was carried out at 21 sampling sites in Longgang River. A total of 43 species of macroinvertebrates from 28 families were recorded during the investigation and oligochaetes dominated the community. Based on characteristics of macroinvertebrate community structure and considering the dispersion and correlation among the indices, three indices were selected for rapid bioassessment of Longgang River： taxa richness, relative Oligochaeta abundance, and the Family Biotic Index (FBI). These three indices were integrated to give a multi-metric index for rapid bioassessment of urban streams. The health of Longgang River was assessed using the multi-metric index and the results indicate that two sampling sites were very healthy, six sampling sites were sub-healthy, and thirteen sites were unhealthy or in sick condition. In summary, indices for rapid bioassessment, based on the tolerance of different macroinvertebrates to varying degrees of environmental pollution, provide a sensitive measure for evaluating river health. By integrating the indices found suitable for urban rivers receiving heavy organic pollution, we developed a multi-metric index that provides an effective tool for assessing the ecological health of urban streams and evaluating river restoration projects. |
| 渠晓东,陈军,陈皓阳,张敏,彭文启,朱磊,雷璇.2021.大型底栖动物快速生物评价指数在城市河流生态评估中的应用[J].水生态学杂志,42(3):14-22. |
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