基于底栖动物完整性评价的赤水河生物基准分析  

Analysis of biological benchmarks for the Chishui River based on benthic integrity assessment

作　　者：李鑫雨 闫龙[1] 胡鹏[1] 商崇菊[2] 胡龑航 苏文杭 徐志 LI Xinyu;YAN Long;HU Peng;SHANG Chongju;HU Yanhang;SU Wenhang;XU Zhi(State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Institute of Disaster Prevention and Water Conservation,Guizhou Institute of Water Conservancy Science,Guiyang 550002,China;College of Hydraulic and Environmental Engineering,China Three Gorges University,Yichang 443002,China;School of Civil Engineering,Sun Yat-Sen University,Zhuhai 519082,China;China Three Gorges Corporation,Wuhan 430010,China)

机构地区：[1]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038 [2]贵州省水利科学研究院防灾与节水研究所,贵州贵阳550002 [3]三峡大学水利与环境学院,湖北宜昌443002 [4]中山大学土木工程学院,广东珠海519082 [5]中国长江三峡集团有限公司,湖北武汉430010

出　　处：《水资源保护》2025年第2期242-252,共11页Water Resources Protection

基　　金：国家重点研发计划项目(2022YFC3202003,2022YFC3205000);国家自然科学基金项目(52122902,U2240202,52394233);中国长江电力股份有限公司项目(Z542402001)。

摘　　要：对赤水河干流26个采样点进行生态环境评价,确定了上游7个参照点、中下游4个参照点;通过参数值分布范围、判别能力和冗余度分析,对22个候选参数进行筛选,采用比值法计算各参数得分得到所有采样点底栖动物完整性指数,并根据底栖动物完整性指数分别拟定赤水河不同时期(枯水期、丰水期和平水期)、不同河段(上游、中下游)的生物基准值。结果表明:枯水期核心参数包括总分类单元数、EPT分类单元数、捕食者个体相对丰度和Pielou均匀度指数,丰水期核心参数包括总分类单元数、EPT分类单元数、Hilsenhoff生物指数和Marglef丰富度指数,平水期核心参数包括总分类单元数、EPT分类单元数、EPT个体百分比、Hilsenhoff生物指数和捕食者个体相对丰度;赤水河枯水期上游和中下游生物基准值分别为6.86和5.04,丰水期分别为6.45和4.43,平水期分别为6.65和6.25。Environmental assessment was conducted at 26 sampling points along the main stream of the Chishui River,and 7 reference points were determined in the upper reaches and 4 in the middle and lower reaches.Through analysis of the distribution range of parameter values,discriminant ability analysis and redundancy analysis,22 candidate indicators were screened.The ratio method was employed to calculate the scores of each parameter and the benthic macroinvertebrate integrity index(B-IBI)of all sampling points.Based on the B-IBI,the biological benchmark values of the Chishui River in different periods(dry season,wet season,and normal season)and different reaches(upper reaches,middle and lower reaches)were respectively formulated.The results showed that the core parameters in the dry season included the total number of taxonomic units,the number of EPT(Ephemeroptera,Plecoptera,and Trichoptera)taxonomic units,the relative abundance of predator individuals and the Pielou evenness index.The core parameters in the wet season included the total number of taxonomic units,the number of EPT taxonomic units,the Hilsenhoff biotic index,and the Margalef richness index.The core parameters in the normal water season included the total number of taxonomic units,the number of EPT taxonomic units,the percentage of EPT individuals,the Hilsenhoff biotic index,and the relative abundance of predator individuals.The biological benchmark values of the upper reaches and the middle and lower reaches of the Chishui River in the dry season were 6.86 and 5.04 respectively,those in the wet season were 6.45 and 4.43 respectively,and those in the normal season were 6.65 and 6.25 respectively.

关 键 词：底栖动物 生物完整性 生物基准 赤水河 

分 类 号：TV214[水利工程—水文学及水资源]