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N pollution sources and denitrification in waterbodies in Taihu Lake region

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Abstract

Herein presented are the researches of the past few years related to characteristics of N pollution of waterbodies and N transport from croplands to the waterbodies in Suzhou and Wuxi regions, the center of the Taihu Lake valley. Based on the types of waterbodies, concentrations of inorganic N of different forms, concentrations of, PO 3−4 , δ15NH4 values in river and lake waterbodies, the pollution sources of N in the river, lake and well waters are distinguished, and comparisons are made of trend of variation and amplitude of concentration between years, seasons and N pollutants in waterbodies. The increase in N2O concentration in different waterbodies and high δ15NO- 3 value in different waterbodies are deemed as an evidence of the existence of denitrification in the river, lake and well waters. Moreover, the role of denitrification in the waterbodies plays in stabilizing chronically concentration of N as pollutant in the waterbodies and mitigating N load in the waterbodies.

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Authors and Affiliations

  1. Institute of Soil Science, Chinese Academy of Sciences, 210008, Nanjing, China

    Guangxi Xing, Yacheng Cao, Shulian Shi, Guoqing Sun, Lijuan Du & Jianguo Zhu

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  1. Guangxi Xing
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  2. Yacheng Cao
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  3. Shulian Shi
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  4. Guoqing Sun
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  5. Lijuan Du
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  6. Jianguo Zhu
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Correspondence to Guangxi Xing.

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Xing, G., Cao, Y., Shi, S. et al. N pollution sources and denitrification in waterbodies in Taihu Lake region. Sc. China Ser. B-Chem. 44, 304–314 (2001). https://doi.org/10.1007/BF02879621

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  • DOI: https://doi.org/10.1007/BF02879621

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