水力发电学报2016，Vol.35Issue(10)：58-66,9.DOI:10.11660/slfdxb.20161007
螳螂川蓝藻藻细胞密度和物种丰度的空间变化
Longitudinal variations in Cyanobacteria abundance and richness along Tanglang River
摘要
Abstract
Composition of algae and longitudinal variation in Cyanobacteria abundance and richness are distinct in the river downstream of a eutrophic lake,since the river receives a large amount of lacustrine phytoplankton from the lake.This paper examines the compositions of Cyanobacteria in the Tanglang River located downstream of the Dianchi Lake,and analyzes the driving factors of spatial variations in the abundance and richness of Cyanobacteria using the taxonomical method and statistical methods.The results show that the dominant algae in this river is Microcystis,a component that contributes 79.77％-97.09 ％ of the abundance.And the abundance follows a law of exponential decay down the river stream and is featured with a significant inverse correlation with the length of river reach and hydraulic retention time (HRT) and no obvious correlations with water temperature (T),velocity,TP or TN.However,the richness is highly correlated with T (P ＜ 0.01,R =0.78**) and inversely with velocity (P ＜ 0.05,R =-0.70*).Correlation analysis also indicates that the turbulent hydraulic condition is responsible for the longitudinal variation in Cyanobacteria abundance along the river while T and velocity have significant impacts on Cyanobacteria richness.关键词
环境水利/空间变化/蓝藻物种组成/微囊藻属/水动力条件Key words
environmental hydraulics/spatial variation/Cyanobacteria composition/Microcystis/hydraulic condition分类
建筑与水利引用本文复制引用
俞茜,陈永灿,刘昭伟..螳螂川蓝藻藻细胞密度和物种丰度的空间变化[J].水力发电学报,2016,35(10):58-66,9.基金项目
国家科技支撑计划课题(2015BAB07B09) （2015BAB07B09）
国家自然科学基金(51279078 （）
51579130) （）
教育部新世纪优秀人才支持计划(NCET-12-0309) （NCET-12-0309）
