摘要
本文于2017—2018年对北京永定河干流门城湖、莲石湖、晓月湖和宛平湖浮游植物的群落结构,包括种类组成、密度、生物量、优势度、香农-威纳多样性指数、均匀性指数进行了调查研究。结果表明:永定河共发现浮游植物149种,其中蓝藻门35种,硅藻门29种,甲藻门和隐藻门各3种,黄藻门2种,金藻门2种,裸藻门6种,绿藻门最多,有69种,四次采样的浮游植物优势种有65种,浮游植物平均密度为21.43×106ind/L,平均生物量为10.64mg/L。生物多样性(香农维纳)指数3.32,超过2,根据多样性指数评价标准,永定河水系的水质整体为β-中污型,其中除宛平湖水质为β-中污型外,其他三湖水质都是清洁-寡污型,生物均匀性指数0.68,超过0.5,根据均匀度指数评价标准,永定河水质为清洁-寡污型,其中门城湖、莲石湖、晓月湖、宛平湖水质都为清洁-寡污型。根据加权综合营养状态指数,永定河整体为轻度富营养化,其中门城湖、晓月湖和宛平湖的营养状态等级都是轻度富营养化,而莲石湖营养状态等级为中营养。
This paper investigated tthe community structure of phytoplankton in Mencheng Lake,Lianshi Lake,Xiaoyue Lake and Wanping Lake,the mainstream of Yongding River in Beijing from 2017 to 2018,including species composition,density,biomass,dominance,Shannon-Wiener diversity index and evenness index.The results show that there are 149 species of phytoplankton in Yongding River,including 35 species of Cyanophyta,29 species of Bacillariophyta,3 species of Pyrrophyta and 3 species of Cryptophyta,2 species of Xanthophyta,2 species of Chrysophyta,6 species Euglenophyta and the most species of Chlorophyta,there are 69 species,the average density of four times sampling phytoplankton is 21.43×106ind/L,the average biomass is 10.64mg/L,there are 67 dominant species.The Biodiversity Index(Shannon-Wiener Index)is 3.32 more than 2.According to the evaluation criteria of the diversity index,the overall water quality of the Yongding River is theβ-polluted type,except Lake Wanping water which is theβ-polluted type,the water quality of the other three lakes is clean-less polluted,with the biological evenness exceeding 0.5.According to the evenness index,the water quality of the Yongding River is clean-less polluted,among which Lake Mencheng,Lake Lianshi and Lake Xiaoyue are clean-less polluted,the water quality of Lake Wanping is clean-less polluted.The whole river system of Yongding River is slightly eutrophic,in which Lake Mencheng,Lake Xiaoyue and Lake Wanping are all slightly eutrophic,while Lake Lianshi is moderately eutrophic.
作者
潘立峰
赵文
陈既元
魏杰
李博
季世琛
王天宇
Pan Lifeng;Zhao Wen;Chen Jiyuan;Wei Jie;Li Bo;Ji Shichen;Wang Tianyu(College of Fisheries and Life Science,Dalian Ocean University,Key Laboratory of Hydrobiology in Liaoning Province,Dalian116023,Dalian,China;Beijing Aquatic Wildlife Rescue and Conservation Center,Beijing102100,China)
出处
《吉林水利》
2022年第9期1-8,共8页
Jilin Water Resources
基金
北京市农业农村局项目(2016-2018)资助。
关键词
浮游植物
群落结构
环境因子
多样性指数
水质
永定河干流
Phytoplankton
Community composition
Environmental factors
Community structure
Biodiversity
Water Quality
Yongdinghe River
