大宁调蓄水库后生浮游动物群落特征及环境因子分析  

Community Characteristics and Environmental Factors of Fetazooplankton in the Daning Reservoir

作　　者：方文颖 任玉芬[2] 徐华山 FANG Wen-ying;REN Yu-fen;XU Hua-shan(Daning Management Office of Beijing South to North Water Diversion,Beijing 100442,China;State Key Laboratory of Urban&Regional Ecology,Research Center far Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;Beijing Drainage Management Center,Beijing 100195,China)

机构地区：[1]北京市南水北调大宁管理处,北京100442 [2]中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京100085 [3]北京市排水管理事务中心,北京100195

出　　处：《四川环境》2022年第4期181-185,共5页Sichuan Environment

基　　金：国家重点研发计划(2016YFC0503004)京津冀城市群生态安全保障技术研究-区域生态系统评价技术研究。

摘　　要：为更好的开展大宁调蓄水库水质保护工作,2017年4~12月,对南水北调大宁调蓄水库开展了后生浮游动物和水质监测。计算了大宁调蓄水库后生浮游动物生物量和Shannon-Wiener多样性指数(H),均匀度指数和Margalef丰富度指数,对浮游动物群落与环境因子开展了主成分分析(PCA)。结果表明,大宁调蓄水库后生浮游动物平均生物量1047.68 cells/L,Shannon-Wiener多样性指数1.38;Margalef丰富度指数1.44;均匀度指数均值0.44,生物多样性一般。影响后生浮游动物生物量大小主要的水环境因子包括硝酸盐氮,总氮和总有机碳,而氨氮、总磷、叶绿素a对后生浮游动物生物量几乎不产生影响或者产生负影响。研究结果可为大宁调蓄水库饮用水源保护及水生态系统恢复提供科技支撑。In order to better protect the water quality of Daning reservoir,the metazooplankton and water quality was monitored in Daning reservoir for south-to-north Water Diversion from April to December in 2017. The biomass,Shannon Wiener diversity index( H),evenness index and Margalef richness index of metazooplankton in Daning reservoir were calculated,and principal component analysis( PCA) was carried out for zooplankton community and environmental factors. The results showed that the average biomass of metazooplankton in Daning reservoir was 1047. 68 cells/L,Shannon Wiener diversity index was 1. 38,Margalef richness index was 1. 44,The mean evenness index was 0. 44,and the biodiversity was general. The main water environmental factors affecting the biomass of metazooplankton included nitrate nitrogen,total nitrogen and total organic carbon.Ammonia nitrogen,total phosphorus and chlorophyll a had little or negative effects on the biomass of metazooplankton. The research results can provide scientific and technological support for the protection of drinking water source and the restoration of water ecosystem in Daning reservoir.

关 键 词：后生浮游动物 群落结构 环境因子 水质 大宁调蓄水库 

分 类 号：X174[环境科学与工程—环境科学]