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Determination of forest soil organic nitrogen determination using technique of X-ray absorption near-edge structure

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Abstract

The forest soil organic N was investigated using N K-edge X-ray absorption near-edge structure (XANES) to gain an insight into the relationship between N speciation and its transformation in quantity. Soil samples were collected from spruce, hemlock and pine forests in central Taiwan. Results showed that various organic N types could be revealed by XANES spectra. Amide and pyrrolic N are the major parts of the composition in the humic substance, soluble organic nitrogen and original soils. The relative distribution of N speciation differed in treatments and vegetations samples. The spruce had a significant difference from the hemlock in soluble organic nitrogen (SON) spectra at 402.3 eV energy peak. In the A-horizon soils, the relative amount of pyridinic N was much higher than that in the O-horizon soils, indicating N transformation in quantity in the mineral horizon was different from that in the organic horizon, which might play an important role in N cycling of forest ecosystems.

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Authors and Affiliations

  1. State Key Lab of Soil Science and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, P. R. China

    Zhuang Shun-yao & Hu Zheng-yi

  2. Department of Public Management, Nanjing Agricultural University, Nanjing, 210095, P. R. China

    Xu Meng-jie

Authors
  1. Zhuang Shun-yao
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  2. Xu Meng-jie
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  3. Hu Zheng-yi
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Corresponding author

Correspondence to Zhuang Shun-yao.

Additional information

Foundation project: This paper was supported by Front Project of Knowledge Innovation Program, Chinese Academy of Sciences (ISSASIP0205)

Biography: ZHUANG Shun-yao (1970–), male, Ph.D., State Key Lab of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, P. R. China.

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Zhuang, Sy., Xu, Mj. & Hu, Zy. Determination of forest soil organic nitrogen determination using technique of X-ray absorption near-edge structure. J. of For. Res. 17, 189–192 (2006). https://doi.org/10.1007/s11676-006-0044-y

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  • DOI: https://doi.org/10.1007/s11676-006-0044-y

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