摘要
为探究西藏浪错大型浮游动物群落结构特征及其环境因子的关系,于2017年7月对西藏浪错大型浮游动物进行了调查。结果鉴定出大型浮游动物5门10种(属),密度变化范围在24.15~148.20个/L之间,平均密度为74.24个/L,生物量变化范围为0.84~2.62 mg/L。平均生物量为1.80 mg/L,该湖大型浮游动物生物量偏低,物种单一。对生物参数与环境因子进行Pearson相关分析得到,物种数与电阻呈显著负相关(p<0.05)。典范对应分析结果显示,环境因子酸碱度、水温、溶解氧和氧化还原电位对浪错大型浮游动物的群落结构影响较明显;其中优势种无节幼体受温度的影响最显著。
In order to explore the relationship between large zooplankton community structure and environmental factors in summer in Lang Tso lake,Tibet,the Large zooplankton in Lang Tso lake was investigated in July 2017.The results showed that there were 5 phyla and 10 species(genera)of large zooplankton,the density ranged from 24.15-148.20 ind./L,the average density was 74.24 ind./L,the biomass ranged from 0.839 to 2.616 mg/L,and the average biomass was 1.800 mg/L.The biomass of large zooplankton in the lake was low and the species were single.Pearson correlation analysis between biological parameters and environmental factors showed that the number of species was significantly negatively correlated with resistance(P<0.05).Canonical correspondence analysis showed that environmental factors such as power of hydrogen,water temperature,dissolved oxygen and oxidation reduction indicator had a significant impact on the large zooplankton community in Lang Tso lake.Temperature had a significant effect on nauplius.The results of this survey provide basic data for the protection and scientific development and utilization of aquatic biodiversity in the water area,and fill the blank of the study on the community structure of large zooplankton in Lang Tso lake,Tibet.
作者
扎西拉姆
周建设
王万良
张驰
陈美群
刘海平
何文佳
Zhaxilamu;ZHOU Jianshe;WANG Wanliang;ZHANG Chi;CHEN Meiqun;LIU Haiping;HE Wenjia(Institute of Fishery Sciences,Tibet Academy of Agricultural and Animal Husbandry Sciences/Tibet Native Fish Breeding and Utilization Technology Engineering Research Center,Tibet Lhasa 850032,China)
出处
《西藏农业科技》
2021年第4期29-34,共6页
Tibet Journal of Agricultural Sciences
基金
农业农村部财政专项“西藏重点水域渔业资源与环境调查”。
关键词
大型浮游动物
种类组成
环境因子
西藏浪错
Large zooplankton
Species composition
Environmental factors
Lang Tso lake
