APP下载

独木河春季浮游生物资源调查及多样性分析

2021-01-13兰开勇刘碧洪彭德清任雪勤杨丹丹蒲松林艳红邵俭

山地农业生物学报 2021年5期

兰开勇 刘碧洪 彭德清 任雪勤 杨丹丹 蒲松 林艳红 邵俭

摘 要:本研究于2019年4月对独木河流域开展浮游生物调查及多样性分析。结果表明:该流域内浮游植物7门35属71种,优势种为小环藻、舟形藻、微小色球藻和衣藻;浮游动物3门26属36种,颈沟基合溞为绝对优势种。浮游植、动物的Shannon-Wiener多样性指数分别为3.84(3.45~4.22)、2.28(1.97~2.71),Pielou均匀度指数分别为0.88(0.81~0.91)、0.94(0.89~0.98)。独木河流域浮游生物群落结构较简单,水体呈富营养化趋势,水质处于清洁至β-中污染之间,这为该流域水生态环境及水生生物研究和保护提供了本底资料。

关键词:独木河;浮游生物;生物多样性;资源调查

中图分类号:S932.2  文献标识码:A

文章编号:1008-0457(2021)05-0015-08    国际DOI编码:10.15958/j.cnki.sdnyswxb.2021.05.003

Investigation and Diversity Analysis on Plankton Resources in the Dumu River

LAN Kaiyong1,LIU Bihong1,PENG Deqing1,REN Xueqin1,YANG Dandan1,PU Song1,LIN Yanhong1,2,SHAO Jian1,2*

(1.College of Animal Science/Key Laboratory of Animal Genetics,Breeding and Reproduction in the Plateau Mountainous Region,Ministry of Education,Guizhou University,Guiyang,Guizhou 550025,China;2.Research Center of Fishery Resources and Environment,Guizhou University,Guiyang,Guizhou 550025,China)

Abstract:This study conducted a survey on plankton diversity in the Dumu River Basin in April 2019.The results showed that there were 71 species of phytoplankton belonged to 35 genera and 7 phyla in the watershed,and the dominant species were Cyclotella,Navicula,Chroococcus minutus and Chlamydomonas,respectively.Simultaneously,there were 36 species of zooplankton belonged to 26 genera and 3 phyla,and Bosminopsis deitersi Richard wasa dominant species.Moreover,the Shannon-Wiener diversity index were 3.84 (3.45~4.22) and 2.28 (1.97~2.71),respectively,and the Pielous evenness index were 0.88 (0.81~0.91) and 0.94 (0.89~0.98).The structure of the plankton community in the Dumu River Basin was relatively simple.However,the water quality was between clean and beta-medium pollution,and it showed a trend of eutrophication,which could provide essential data for the research and protection of aquatic ecological environment and aquatic biodiversity in the future.

Keywords:Dumu River;plankton;biodiversity;resources survey

基金项目:贵州大学大学生“SRT計划”项目(贵大SRT字(2018)186);贵州省科技计划项目(黔科合基础[2019]1118)

独木河是清水江的支流,属于长江流域乌江水系,位于贵州省贵定县,发源于贵州省贵阳市花溪区高坡乡,流经龙里县,于贵定县内石板乡入境,光明乡的光明村出境。境内全长95.60 km,流域面积1180.30 km2,年均流量为 22.46 m3/s。2007年,独木河下游修建大花水水电站后,河床升高,水面抬升,水域生境发生了改变。因此,本研究通过对独木河洛北河至两岔河段的浮游生物进行采样分析,并利用Shannon-Wiener多样性指数和Pielous均匀度指数对其水质进行评价,研究独木河现阶段浮游生物群落组成和多样性状态,可望为该流域水生态环境保护提供参考。

1 材料与方法

1.1 采样点及时间

本研究共设置了6个采样点(表1,图1),依次为S1(两岔河)、S2(两岔河汇口)、S3(高桥河口)、S4(独木河口)、S5(独木桥)、S6(洛北河)。……

登录APP查看全文