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[1]ZHOU Yiwen,ZHOU Xiaohong,REN Qiqi,et al.Distribution Characteristics of Nitrogen and Organic Matter in Riverside Surface Sediments of the Ancient Canal in Zhenjiang City[J].Research of Soil and Water Conservation,2017,24(06):313-318,326.

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Distribution Characteristics of Nitrogen and Organic Matter in Riverside Surface Sediments of the Ancient Canal in Zhenjiang City

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 06 Page number: 313-318,326 Column: Public date: 2017-11-24

Title:: Distribution Characteristics of Nitrogen and Organic Matter in Riverside Surface Sediments of the Ancient Canal in Zhenjiang City

Author(s):: ZHOU Yiwen, ZHOU Xiaohong, REN Qiqi, LI Yimin, LIN Zhijun, FENG Deyou, HAN Xu; School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China

Keywords:: nitrogen; organic matter; distribution characteristics; riverside sediments; ancient canal

CLC:: X522

DOI:: -

Abstract:: In order to reveal distribution characteristics of nitrogen and organic matter in riverside surface sediments of the Ancient Canal in Zhenjiang, we selected six sampling sites in the riverside of Ancient Canal, and took the sediment samples from the sites. Total nitrogen (TN), ammonia nitrogen (NH₄⁺-N), nitrate nitrogen (NO₃^--N), nitrite nitrogen (NO₂^--N) and organic matter (OM) of the samples were measured, and organic nitrogen (Org-N) was calculated according to the empirical formula. The results showed that the contents of TN,NH₄⁺-N,NO₃^--N,NO₂^--N and Org-N ranged from 0.39 to 2.40 g/kg, from 1.63 to 11.31 mg/kg, from 2.46 to 6.95 mg/kg, from 0.54 to 2.29 mg/kg, and from 0.99 to 2.32 g/kg. The coefficient of variation (C. V) was highest for TN and Org-N (83.59%), followed by NH₄⁺-N, NO₃^--N and NO₂^--N (40.36%~49.15%), indicating that the TN and Org-N obviously varied among the sampling sites. The content of organic matter ranged from 0.99% to 2.32% and its coefficient of variation was 32.50%, indicating that the content of organic matter moderately varied among the sampling sites. According to the C/N values, the source of organic matter in the Ancient Canal of Zhenjiang is mainly dominated by the terrigenous pollutants. Correlation analysis results show that there is the closest relation between NO₂^--N and TN, whereas the correlation relation between NH₄⁺-N and NO₃^--N, NO₂^--N, Org-N were not significant, indicating that the there were certain differences of ammonia nitrogen and other forms of nitrogen in the sediment. In addition, the pH value of the ancient canal had very significant effect on the forms of surface sediment nitrogen.

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