globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.12982
论文题名:
Integrating plant litter quality, soil organic matter stabilization, and the carbon saturation concept
作者: Castellano M.J.; Mueller K.E.; Olk D.C.; Sawyer J.E.; Six J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期:9
起始页码: 3200
结束页码: 3209
语种: 英语
英文关键词: Decomposition ; Litter ; Mineralization ; Nitrogen ; Residue
Scopus关键词: concentration (composition) ; decomposition ; litter ; mineralization ; mineralogy ; nitrogen ; plant residue ; saturation ; soil carbon ; soil organic matter ; organic compound ; soil ; biological model ; carbon cycle ; chemistry ; ecosystem ; plant physiology ; soil ; Carbon Cycle ; Ecosystem ; Models, Biological ; Organic Chemicals ; Plant Physiological Processes ; Soil
英文摘要: Labile, 'high-quality', plant litters are hypothesized to promote soil organic matter (SOM) stabilization in mineral soil fractions that are physicochemically protected from rapid mineralization. However, the effect of litter quality on SOM stabilization is inconsistent. High-quality litters, characterized by high N concentrations, low C/N ratios, and low phenol/lignin concentrations, are not consistently stabilized in SOM with greater efficiency than 'low-quality' litters characterized by low N concentrations, high C/N ratios, and high phenol/lignin concentrations. Here, we attempt to resolve these inconsistent results by developing a new conceptual model that links litter quality to the soil C saturation concept. Our model builds on the Microbial Efficiency-Matrix Stabilization framework (Cotrufo et al., 2013) by suggesting the effect of litter quality on SOM stabilization is modulated by the extent of soil C saturation such that high-quality litters are not always stabilized in SOM with greater efficiency than low-quality litters. © 2015 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61745
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Agronomy, Iowa State University, Ames, IA, United States; United States Department of Agriculture, Agricultural Research Service, Rangeland Resources Research Unit, Ft. Collins, CO, United States; United States Department of Agriculture, Agricultural Research Service, National Laboratory for Agriculture and the Environment, Ames, IA, United States; Department of Environmental Systems Science, Swiss Federal Institute of Technology, ETH-Zurich, Zurich, Switzerland

Recommended Citation:
Castellano M.J.,Mueller K.E.,Olk D.C.,et al. Integrating plant litter quality, soil organic matter stabilization, and the carbon saturation concept[J]. Global Change Biology,2015-01-01,21(9)
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