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引用本文:孟云飞,崔恩慧,鲁甲,殷旭旺,徐宗学,张远.辽河流域太子河大型底栖动物群落与水环境因子关联性的量化分析.湖泊科学,2019,31(6):1637-1650. DOI:10.18307/2019.0604
MENG Yunfei,CUI Enhui,LU Jia,YIN Xuwang,XU Zongxue,ZHANG Yuan.Quantitative analysis of the relationship between benthic macroinvertebrate community and water environment factors in Taizi River, Liaohe River catchment. J. Lake Sci.2019,31(6):1637-1650. DOI:10.18307/2019.0604
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辽河流域太子河大型底栖动物群落与水环境因子关联性的量化分析
孟云飞1, 崔恩慧1, 鲁甲1, 殷旭旺1, 徐宗学2, 张远3
1.大连海洋大学水产与生命学院, 辽宁省水生生物学重点实验室, 大连 116023;2.北京师范大学水科学研究院, 北京 100875;3.中国环境科学研究院, 环境基准与风险评估国家重点实验室, 流域水生态保护技术研究室, 北京 100012
摘要:
大型底栖动物群落结构与水环境因子具有较强的响应关系,为了量化分析大型底栖动物群落水环境因子适宜状态以及响应关系,在太子河进行3次流域水生态调查,共获得136个站位的生态数据,通过筛选得到水环境驱动因子,并利用加权平均回归分析和临界点指示类群分析的方法,探究大型底栖动物群落物种、不同多样性水平以及功能摄食类群水环境驱动因子的最适值和阈值.结果显示,显著影响大型底栖动物群落结构的水环境因子是溶解氧、电导率、总氮.大型底栖动物敏感种的溶解氧最适值较高,耐污种较低;敏感种的电导率和总氮最适值较低,耐污种较高;大型底栖动物群落多样性水平Shannon-Wiener指数(0-1]区间的溶解氧最适值最低,(3-4]区间的溶解氧最适值最高,各Shannon-Wiener指数区间电导率和总氮最适值排序为:(0-1]区间<(1-2]区间 < (2-3]区间 < (3-4]区间;在5个功能摄食类群中溶解氧最适值最高和最低分别为撕食者和直接收集者,电导率最适值最高和最低分别为直接收集者和过滤收集者,总氮最适值最高和最低分别为直接收集者和刮食者.大型底栖动物敏感种的溶解氧阈值高于耐污种类群与其他物种,而敏感种的电导率和总氮阈值低于耐污种和其他物种;大型底栖动物群落多样性水平Shannon-Wiener指数(0-1]区间与溶解氧阈值呈负响应关系,而与电导率和总氮阈值呈正响应关系,(1-2]区间、(2-3]区间、(3-4]区间与溶解氧阈值呈正响应关系,而与电导率和总氮阈值呈负响应关系;溶解氧指示的大型底栖动物功能摄食类群为撕食者,且呈正响应关系,而电导率和总氮指示的功能摄食类群都包括过滤收集者、刮食者、撕食者,且呈负响应关系,其中刮食者的电导率和总氮阈值均最高.研究表明,通过分析大型底栖动物群落水环境因子的最适值和阈值,能以数据的形式量化反映大型底栖动物群落与河流水环境因子的响应关系,对河流生态环境的保护和修复具有重要的指导意义.
关键词:  太子河  大型底栖动物  摄食功能群  最适值  阈值
DOI:10.18307/2019.0604
分类号:
基金项目:辽宁省优秀人才支持计划项目(LR2015009)、国家自然科学基金项目(41977193)和辽宁省"兴辽英才计划"项目(XLYC1807228)联合资助.
Quantitative analysis of the relationship between benthic macroinvertebrate community and water environment factors in Taizi River, Liaohe River catchment
MENG Yunfei1, CUI Enhui1, LU Jia1, YIN Xuwang1, XU Zongxue2, ZHANG Yuan3
1.Liaoning Provincial Key Laboratory for Hydrobiology, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, P. R. China;2.College of Water Science, Beijing Normal University, Beijing 100875, P. R. China;3.Laboratory of Riverine Ecological Conservation and Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, P. R. China
Abstract:
The community structure of benthic macroinvertebrate respond sensitively to water environment. According to the community structure characteristics, the ecological condition of the watershed can be evaluated, and vice versa. At present, the research on benthic macroinvertebrate community structure and water environment was mostly qualitatively studied, which could not accurately reflect their quantitative relationship. In order to quantify such relationship, we conducted three ecological surveys in the Taizi River, and obtained ecological data from 136 stations. We obtained the habitat water environment driving factors through screening, and used weighted average (WA) and thresholds indicator taxa analysis (TITAN) to analyze optimal values (OV) and threshold of indicator species (group) of driving factors for water environment in benthic macroinvertebrate (BM) community, different diversity levels and feeding function group. The results showed that the driving factors of the BM community were dissolved oxygen, conductivity, and total nitrogen (TN). The sensitive BM community have high OV in dissolved oxygen, while the pollution-tolerance species has low OV. The sensitive BM community also have lower OV in conductivity and TN, while the pollution-tolerance species has higher values. The lowest dissolved oxygen OV in the Shannon-Wiener index (0-1] interval, and the highest dissolved oxygen OV in the (3-4] interval. The OV of conductivity and TN in each group were ranked as follows:(0-1] interval < (1-2] interval < (2-3] interval<(3-4] interval. In the five functional feeding groups, the highest and the lowest dissolved oxygen OV were the shredders and the gatherer-collectors, the highest and the lowest conductivity OV were the gatherer-collectors and the filterer-collectors, and the highest and the lowest TN OV were the gatherer-collectors and the scrapers. The dissolved oxygen threshold of BM sensitive species were higher than that of pollution-tolerant species and other species, while the sensitive species of conductivity and TN threshold were lower than that of pollution-tolerant species and other species; The Shannon-Wiener index (0-1] interval had a negative relationship with threshold of dissolved oxygen, and positively relationship with threshold of conductivity and TN; while the Shannon-Wiener index intervals of (1-2], (2-3] and (3-4] had a positive relationship with the threshold of dissolved oxygen and a negative relationship with the conductivity and TN. The BM feeding function groups (FFGs) indicated by dissolved oxygen was shredders, and had a positively relationship with the threshold of dissolved oxygen, while the feeding function groups indicated by conductivity and TN include filterer-collectors, scrapers and shredders, and had a negative relationship. The scrapers' conductivity and TN threshold were the highest. The study showed that analyzing the optimum value and threshold value of the aquatic environmental factors of the BM community, the relationship between the BM community and the aquatic environmental factors of the river can be quantified, which had important guiding significance for the protection and restoration of the river ecological environment.
Key words:  Taizi River  benthic macroinvertebrate  feeding function groups(FFGs)  optimal value  thresholds
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