Analysis and behavior of soluble organic nitrogen in forest soils |
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Authors: | Chengrong R Chen Zhihong H Xu |
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Institution: | (1) Centre for Forestry and Horticultural Research, and School of Biomolecular and Physical Sciences, Griffith University, Nathan, Queensland, 4111, Australia |
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Abstract: | Background, aim, and scope A large proportion of soil nitrogen (N; >80%) is present in organic form. Current research on plant N uptake in terrestrial
ecosystems has focused mainly on inorganic N such as ammonium (NH4
+) and nitrate (NO3
−), while soluble organic N (SON) has received little attention. In recent years, the increasing evidence showing the direct
uptake of various amino acids by plants and the predominance of the organic form in N loss by leaching in many forest ecosystems
has drawn attention to critically re-examine the nature and the ecological role of soil SON in terrestrial N cycling. However,
little is known about the sources and dynamics, chemical nature, and ecological functions of soil SON in forest ecosystems.
This paper reviews recent advances in the areas of research on current techniques for characterizing soil SON and the size,
nature, and dynamics of soil SON pools in forest ecosystems. |
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Keywords: | |
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