Review and synthesis of experimental data on organic matter decomposition with respect to the effect of temperature, moisture, and acidity
Review and synthesis of experimental data on organic matter decomposition with respect to the effect of temperature, moisture, and acidity
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DOI:
10.1139/a98-001
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发表时间:
1998-03
影响因子:
5.7
通讯作者:
Charlotta Walse;B. Berg;H. Sverdrup
中科院分区:
文献类型:
--
作者:
Charlotta Walse;B. Berg;H. Sverdrup
A review and synthesis of experimental decomposition data was performed with the objective of finding parameter values for a decomposition model. Experimental data were retrieved from the literature and included data on mass loss rates, nitrogen mineralization rates, carbon dioxide evolution rates, and growth rates of bacteria and fungi. Environmental variables included in the synthesis were air temperature, soil moisture, and soil acidity (concentration of H+ and Al3+ in soil solution). The variables were assumed to act as separate, multiplicative rate regulating factors on soil microbial processes. The model outline includes four organic matter pools: (i) easily decomposable compounds, (ii) holocellulose, (iii) lignin, and (iv) resistant compounds. It was assumed that the decomposition of the easily decomposable substances can be modeled as the growth rate of bacteria, while the decomposition of lignin and resistant compounds can be modeled as the growth rate of fungi. The decomposition of the substance...