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《Journal of Anhui Agricultural Sciences》 2009-15
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Study on the Bacteria Utilizing Nitrogen in the Waterbody of Danhe River in Jingcheng City

LU Dong-tao et al(Department of Chemical Engineering,Jincheng Vocational and Technical College,Jincheng,Shanxi 048026)  
[Objective] The study aimed to explore and discuss the distribution and biodiversity characteristics of nitrogen utilizing bacteria in Danhe River water.[Method] The water sample was collected in the deep of 10~20 cm under the water surface of Zhaozhuang section in Danhe for 7 times,the gathering time was 1 year,the microbial colonies were made for differential count according to the characteristics of different colonies,the amount distribution and characteristics of nitrogen utilizing bacteria in Danhe water were studied.[Result] The annual mean value of azotobacter,ammonifiers and nitrobacteria in the river water were 140,1 179 and 691 CFU/ml resp.,the yearly average of nitrosation and denitrifying bacteria were 647 and 369 MPN/ml.The amount distribution of nitrogen cycle bacteria in water environment was related to season,nutrition status etc.,the azotobacteria was mostly affected by total nitrogen(TN),the denitrifying bacteria were mainly influenced by TN and total phosphorus(TP),the number distribution of azotobacteria and nitrobacteria had a certain coherence with that of denitrifying bacteria on number distribution.[Conclusion] The ammonifiers in nitrogen utilizing bacteria in Danhe water was in much distribution,the nitrobacteria,nitrosation and denitrifying bacteria were at next and azotobacter was relatively less.
【Fund】: 晋城职业技术学院2008年学校课题资助项目
【CateGory Index】: X832
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2 CHENG Sheng-tong (Dept. of Environmental Science and Engineering, Tsinghua Univ., Beijing 100084, China);Environmental capacity and permissible discharge of rivers[J];Water Resources Protection;2003-02
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