Wu Pan, Qin Boqiang, Yu Ge, Deng Jianming, Zhou Jian
State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 73 East Beijing Road, Nanjing 210008, China.
Water Environ Res. 2016 Jul;88(7):665-72. doi: 10.2175/106143016X14609975746767.
To explore the linkage of phosphorus (P), nitrogen (N) and phytoplankton during the summer and winter in the inflow rivers of the Taihu Basin, China, 51 main rivers were investigated in 2013 and 2014. The results showed that high P and N input deteriorated the water quality, and P primarily limited Chlorophyll a concentrations. Diatoms, green algae, and cyanobacteria were the dominant phyla, totaling 29 and 41 species in summer and winter, respectively. Total P negatively affected the phytoplankton diversity during summer and had a stronger positive relationship with richness than total N during winter. The P level restricted the biomass of dominant algae, and turbidity had a greater interaction with cyanobacteria. This study suggests that P drives the phytoplankton assemblages under N-rich environments in the inflow rivers during summer and winter, indicating the need for nutrient reduction and further monitoring of the rivers to improve the water ecology.
为探究中国太湖流域入流河流夏季和冬季磷（P）、氮（N）与浮游植物之间的联系，2013年和2014年对51条主要河流进行了调查。结果表明，高磷和氮输入使水质恶化，且磷主要限制叶绿素a浓度。硅藻、绿藻和蓝藻是优势门类，夏季和冬季分别共有29种和41种。总磷在夏季对浮游植物多样性产生负面影响，而在冬季与丰富度的正相关关系比总氮更强。磷水平限制了优势藻类的生物量，浊度与蓝藻的相互作用更大。本研究表明，在夏季和冬季，磷驱动了入流河流富氮环境下的浮游植物群落组合，这表明需要减少河流养分并进一步监测以改善水生态。
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