Abstract：Species composition, biomass, biodiversity of periphyton community as well as the aquatic physical and chemical characteristics along the littoral zone of three lakes in Erhai watershed, including Lake Erhai, Lake Xihu and Lake Cibihu, were investigated during December 2009 to January 2010. The dominant periphyton species in Lake Erhai were Cladophora spp. Diatoma spp. and Psephonema aenigmat, whereas the periphyton communities of Lake Xihu and Lake Cibihu were dominated by diatom species. Biomass of periphyton in Lake Erhai was significantly higher than those in Lake Xihu and Lake Cibihu. The highest periphyton biomass (Chl-a as 78.71μg/cm2) was observed at site EH31. Proportion of green algae in periphyton of Lake Erhai was also the highest among the three lakes. Algal biodiversity of the periphyton communities of Lake Cibihu, expressed by Shannon-wiener index, was the highest (2.47), compared with that of Lake Xihu and Lake Erhai as 2.34 and 2.20, respectively. The results indicated that algal biodiversity decreased but pollution tolerant species richness increased at the downstream of Erhai watershed. Statistical analysis by CCA showed that NH4+ and TP in water body were the main factors determining the periphyton species distribution in Erhai watershed.
兰波, 向贤芬, 贾延亭, 蒋金辉, 杨劭. 洱海流域沿岸带石质基质上周丛藻类群落研究[J]. 中国环境科学, 2011, 31(11): 1881-1887.
LAN Bo, XIANG Xian-Fen, JIA Yan-Ting, JIANG Jin-Hui, YANG Shao. Investigation of epilithic periphyton communities of the littoral zone of the lakes in Erhai watershed. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(11): 1881-1887.
