Dynamics of soil amino sugar pools during decomposition processes of corn residues as affected by inorganic N addition |
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| Authors: | Xueli Ding Xudong Zhang Hongbo He Hongtu Xie |
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| Institution: | (1) Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, People’s Republic of China;(2) Graduate University of Chinese Academy of Sciences, Beijing, 100039, People’s Republic of China;(3) National Field Research Station of Shenyang Agroecosystems, Chinese Academy of Sciences, Shenyang, 110016, People’s Republic of China; |
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| Abstract: | Purpose Identifying the impact of inorganic-nitrogen (N) availability on soil amino sugar dynamics during corn (Zea mays L.) residue decomposition may advance our knowledge of microbial carbon (C) and N transformations and the factors controlling
these processes in soils. Amino sugars are routinely used as microbial biomarkers to investigate C and N sequestration in
microbial residues, and they are also involved in microbial-mediated soil organic matter (SOM) turnover. We conducted a 38-week
incubation study using a Mollisol which was amended with corn residues and four levels of inorganic N (i.e., 0, 60.3, 167.2,
and 701.9 mg N kg−1 soil). The objective of this study was to examine the effects of inorganic-N availability on fungal and bacterial formation
and stabilization of heterogeneous amino sugars during the corn residue decomposition in soil. |
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