湖泊科学2012，Vol.24Issue(3)：460-465,6.
新安江水库(千岛湖)湖泊区夏季热分层期间垂向理化及浮游植物特征
Vertical distribution of phytoplankton and physico-chemical characteristics in the lacustrine zone of Xin'anjiang Reservoir( Lake Qiandao) in subtropic China during summer stratification
摘要
Abstract
The investigation on vertical distribution of phytoplankton and physical-chemical characteristics was conducted in the lacustrine zone during summer stratification in Xin'anjiang Reservoir( Lake Qiandao). The Water-PAM Chlorophyll Fluorometer was used to obtain vertical profiles of phytoplankton photosynthesis. The results showed that depth of thermocline appeared between 10 —20 m. Besides, the vertical profiles of pH, dissolved oxygen and turbidity were in agreement with chlorophyll-a. In summer, the phytoplankton was dominated by Bacillariophyta, C. meneghiniana was dominant in surface layer, while F. crotonensis was absolutely dominant below the surface layer. High-density of phytoplankton was found around 5 —10 m below the water surface. However, a sharp decline was observed for phytoplankton density below thermocline layer. Therefore, the thermal stratification might affect the vertical distribution of phytoplankton population. Phytoplankton maximum photosynthetic efficiency had a negative relationship with water depth and the actual maximum value of photosynthetic efficiency was determined at 10 m depth.关键词
新安江水库(千岛湖)/浮游植物/垂向分布/Water-PAM/湖泊区Key words
Xin'anjiang Reservoir(Lake Qiandao)/ phytoplankon/ vertical distribution/ Water-PAM/ lacustrine zone引用本文复制引用
吴志旭,刘明亮,兰佳,何剑波,虞左明..新安江水库(千岛湖)湖泊区夏季热分层期间垂向理化及浮游植物特征[J].湖泊科学,2012,24(3):460-465,6.基金项目
杭州市科技局项目(20100834M42)、杭州市环保局项目(201006)、浙江省自然科学基金项目(Y5110314)和国家水体污染控制与治理科技重大专项项目(2009ZX07528-003-04-02)联合资助. （20100834M42）
