Phytoplankton community structure and eutrophication of reservoirs in Guangdong Province,China

Abstract

Abstract: A phytoplankton survey was conducted in flood and dry seasons in 2000 in 19 reservoirs of Guangdong Province,China.Based on phytoplankton community structure and three diversity indices (Shannon-Weaver diversity index,Pielou evenness index and McNaughton abundance index),this paper assessed the trophic stae of reservors.The results showed that Xinfengjiang and Baipanzhu reservois were oligotrophic,and most of the reservoirs were meso-trophic,while Hedi,Qiyeshi and Shiyan reservoirs,which located in highly developing area,were densely polluted and belonged to eutrophic waters.Results showed that trophic level in reservoirs located in upper stream and mountainous district was significantly lower than that in down stream area and coastal region.Overall,the water quality of reservoirs along Dongjiang River was better than that of other watersheds especially those in the west coastal area and Pearl River Delta.

Key words: Scale, Spatial pattern, Semivariogram

CLC Number:

WANG Zhaohui, HAN Boping, HU Ren, LIN Qiuqi. Phytoplankton community structure and eutrophication of reservoirs in Guangdong Province,China[J]. cje, 2005, (4): 402-405,409.

References

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