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Articles by Chunjie Bai
Total Records ( 2 ) for Chunjie Bai
  Chunjie Bai , Shilin Xu , Xiaoxi Fu , Xihan Wang , Dapeng Tan and Pingsha Huang
  Objective: Environmental factors were monitored annually at 13 sections in the Yongjiang river, Ningbo and China, the structures characteristics and the seasonal changes of the phytoplankton community from the sections were studied by using four different indexes. Methodology: The study showed there were 114 phytoplanktons species belonging to 6 phyla, 41 families and 80 genus. The phytoplankton community was dominated by the species of green algae and diatoms in the river. The 1st dominant species was Oscillatoria sp. and followed by Melosira sp. The peak of the abundance presented in spring in most cases. Results: There was a significant difference among the sections in phytoplankton community compositions and among the seasons at each section according to the two-way ANOSIM similarity analysis. The combination of environmental factor, which affected the water quality mainly was CODCr, TP and TN/TP. Conclusion: Both species diversity index and total pollution indexes in phytoplankton communities displayed that the Yongjiang river was polluted.
  Jianqing Wang , Kaili Ren , Chunjie Bai , Lihua Teng , Jie Zhang and Pingsha Huang
  In order to elaborate the relationship between the plankton community and the water environment factors in Yongjiang River, the gray correlation analysis on the plankton community structure and the main water environmental factors was conducted. The results showed that Total Nitrogen (TN) had the maximum effect on phytoplankton abundance; Dissolve Oxygen (DO) has the minimum effect. The impacts from CODCr and BOD5 to all groups of plankton abundance were also significant. In addition, the study showed that TN and BOD5 were the main factors to affect the plankton community diversity index in Yongjiang River. By means of the grey relational grades, sequences and the measured data analysis, it is determined that TN and BOD5 were the two factors with more obvious effects on the plankton community in the Yongjiang River. Their variation resulted in significant changes in the plankton community structure.
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