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
Charlotta Walse;B. Berg;H. Sverdrup
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Charlotta Walse;B. Berg;H. Sverdrup

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进行了实验分解数据的审查和合成,目的是找到分解模型的参数值。实验数据从文献中检索,包括质量损失率,氮矿化率,二氧化碳的释放率,细菌和真菌的生长速率的数据。包括在合成的环境变量是空气温度,土壤湿度和土壤酸度(H+和Al 3+在土壤溶液中的浓度)。这些变量被假定为土壤微生物过程中的独立的、倍增的速率调节因子。模型大纲包括四个有机物质库:(i)容易分解的化合物,(ii)综纤维素,(iii)木质素,和(iv)抗性化合物。假设易分解物质的分解可以模拟为细菌的生长速率,而木质素和抗性化合物的分解可以模拟为真菌的生长速率。物质的分解...
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...