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王硕, 杨涛, 李小平, 陈佳. 渭河流域浮游动物群落结构及其水质评价[J]. 水生生物学报, 2019, 43(6): 1333-1345. DOI: 10.7541/2019.157
引用本文: 王硕, 杨涛, 李小平, 陈佳. 渭河流域浮游动物群落结构及其水质评价[J]. 水生生物学报, 2019, 43(6): 1333-1345. DOI: 10.7541/2019.157
WANG Shuo, YANG Tao, LI Xiao-Ping, CHEN Jia. ZOOPLANKTON COMMUNITY STRUCTURE AND THE WATER QUALITY IN THE WEI RIVER BASIN[J]. ACTA HYDROBIOLOGICA SINICA, 2019, 43(6): 1333-1345. DOI: 10.7541/2019.157
Citation: WANG Shuo, YANG Tao, LI Xiao-Ping, CHEN Jia. ZOOPLANKTON COMMUNITY STRUCTURE AND THE WATER QUALITY IN THE WEI RIVER BASIN[J]. ACTA HYDROBIOLOGICA SINICA, 2019, 43(6): 1333-1345. DOI: 10.7541/2019.157

渭河流域浮游动物群落结构及其水质评价

ZOOPLANKTON COMMUNITY STRUCTURE AND THE WATER QUALITY IN THE WEI RIVER BASIN

  • 摘要: 分别于2017年10月和2018年6月对渭河流域内12个采样点的浮游动物种类、物种密度、生物量和水温、电导率、溶解氧浓度和pH等水质指标进行调查, 并利用生物多样性指数法对水质进行评价。结果显示, 共鉴定出57种浮游动物(原生动物11种、轮虫33种、枝角类7种、桡足类6种)。优势种为萼花臂尾轮虫Brachionus calyciflorus。枯水期浮游动物密度变化范围在0.72—7.84 ind./L, 平均密度为(2.79±2.11) ind./L; 浮游动物生物量为0.38—6.15 mg/L, 平均生物量为(2.31±2.64) mg/L; CCA分析表明, 水温、溶解氧、海拔和电导率与渭河流域浮游动物群落结构有明显的相关性; Shannon-Wiener多样性指数、Margalef丰富度指数分别为1.07、0.69。丰水期浮游动物密度变化范围在0—179.02 ind./L, 平均密度为(16.66±49.18) ind./L; 浮游动物生物量0—2448.12 mg/L, 平均生物量为(243.96±673.78) mg/L; Shannon-Wiener多样性指数Margalef丰富度指数分别为0.78、1.15。依据浮游动物种类密度和多样性指数对水质进行评价, 结果为渭河水系北道、林家村为中度污染, 魏家堡为重度污染, 咸阳、临潼、华县为轻度污染; 泾河水系杨家坪、雨落坪、张家山为中度污染; 北洛河水系刘家河、交口河、状头为中度污染。

     

    Abstract: To evaluate the water quality situation, this study investigated zooplankton species, density and biomass and the main water quality indexes like water temperature, conductivity, DO and pH in 12 cross-sections in the Wei River Basin in October of 2017 and June of 2018, respectively, using the biological diversity index method. 57 species of zooplankton species (11 species of protozoa, 33 species of rotifers, 7 species of cladocerans, 6 species of copepods) were identified, and the dominant species was Brachionus calyciflorus. During dry season, the density of zooplankton varied between 0.72—7.84 ind./L with the average density of (2.79±2.11) ind./L, and the biomass ranged from 0.38 to 6.15 mg/L with the average biomass of (2.31±2.64) mg/L. The diversity indices of Shannon-Wiener and Margalef were 1.07 and 0.69, respectively. The canonical correspondence analysis indicated that the community structure of zooplankton in the Wei River Basin was primarily affected by the water environment including temperature, DO, altitude and conductivity. During wet season, the density of zooplankton varied between 0—179.02 ind./L with an average density of (16.66±49.18) ind./L, and the biomass ranged 0—2448.12 mg/L with an average biomass of (243.96±673.78) mg/L. The diversity indices of Shannon-Wiener and Margalef were 0.78 and 1.15, respectivly. The water quality of Wei River in Beidao and Linjiacun was moderately polluted, and the water qualities in Weijiabao were heavy pollution, and in Xianyang, Lintong, Huaxian the water qualities were light pollution. The water quality of Jing River in Yangjiaping, Yuluoping and Zhangjiashan was moderately polluted. The water quality of Beiluo River in Liujiahe, Jiaokouhe and Zhuangtou was moderately polluted.

     

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