嘉陵江南充出境江段秋季浮游植物群落结构及水质评价  

Phytoplankton Community Structure and Water Quality Assessment in Nanchong Outbound Section of Jialing River in Autumn

作　　者：宋琳 王健 杨坤 吕振宇 张富斌 SONG Lin;WANG Jian;YANG Kun;LYU Zhenyu;ZHANG Fubin(College of Environmental Science and Engineering,China West Normal University,Nanchong Sichuan 637009,China;Institute of Ecology,China West Normal University,Nanchong Sichuan 637009,China;Southwest Branch of National Freshwater Fishery Engineering Technology Research Center,China West Normal University,Nanchong Sichuan 637009,China;Changjiang Institute of Survey,Planning,Design and Research,Wuhan Hubei 430010,China)

机构地区：[1]西华师范大学环境科学与工程学院,四川南充637009 [2]西华师范大学生态研究院,四川南充637009 [3]西华师范大学国家淡水渔业工程技术研究中心(西南分中心),四川南充637009 [4]长江勘测规划设计研究有限责任公司,武汉430010

出　　处：《西华师范大学学报（自然科学版）》2021年第3期215-224,共10页Journal of China West Normal University(Natural Sciences)

基　　金：国家自然科学基金项目(31901219);西华师范大学博士科研启动项目(18Q035);中国科学院水生生物多样性与重点实验室开放基金项目。

摘　　要：为探究嘉陵江南充段出境江段浮游植物群落结构及水质状况,于2018年秋季(10月)在嘉陵江南充出境江段设置了5个采样点,测定流速、水温、酸碱度、透明度、溶解氧、浊度、总溶解性固体、亚硝酸盐等常规水质指标并分析浮游植物种类组成、密度、生物量。同时选用Shannon-Wiener多样性指数以及Margalef丰富度指数对水体污染情况进行判断。结果显示,嘉陵江南充出境江段共有浮游藻类8门30科46属80种,绿藻门和硅藻门藻类是优势类群,各门类藻类密度变化范围为0.14×10^(4)~4.53×10^(4)ind.·L^(-1),生物量介于0.011~0.036 mg·L^(-1),表明嘉陵江南充出境江段水质为Ⅱ类。Shannon-Wiener多样性指数以及Margalef物种丰富度指数表明该江段水体为轻度污染且处于贫营养状态。To explore the phytoplankton community structure and water quality in Nanchong outbound section of Jialing River,five sampling sites are set up in the autumn(October)of 2018 and common water quality indices are measured,including the flow rate,water temperature,pH,transparency,dissolved oxygen,turbidity,total dissolved solid,nitrite and so on.The species composition,density and biomass of phytoplankton are analyzed and the water pollution is judged by Shannon Wiener diversity index and Margalef richness index.The results show as follows:There are 80 species of phytoplankton belonging to 46 genera,30 families and 8 phyla in the section;The algae of chlorophyta and bacillariophyta are the dominant species;Density of each phyla ranges from 0.14×10^(4)to 4.53×10^(4) ind.·L^(-1),and biomass of each phyla ranges from 0.011 to 0.036 mg·L^(-1);The water quality is assessed in the range of class II based on the above-mentioned index.Shannon Wiener diversity index and Margalef richness index indicate that the water is in a state of poor nutrition as been slightly polluted.

关 键 词：浮游植物 多样性指数 梯级航电工程 水质评价 嘉陵江 

分 类 号：X824[环境科学与工程—环境工程]