DOI: 10.1007/s10533-016-0247-z
Scopus记录号: 2-s2.0-84988729988
论文题名: The C:N:P:S stoichiometry of soil organic matter
作者: Tipping E. ; Somerville C.J. ; Luster J.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2016
卷: 130, 期: 2018-01-02 起始页码: 117
结束页码: 131
语种: 英语
英文关键词: Carbon
; Nitrogen
; Phosphorus
; Protein
; Soil organic matter
; Stoichiometry
; Sulphur
Scopus关键词: biogeochemistry
; carbon
; ecosystem modeling
; nitrogen
; nutrient dynamics
; phosphorus
; protein
; soil horizon
; soil nutrient
; soil organic matter
; stoichiometry
; sulfur
; tropical soil
英文摘要: The formation and turnover of soil organic matter (SOM) includes the biogeochemical processing of the macronutrient elements nitrogen (N), phosphorus (P) and sulphur (S), which alters their stoichiometric relationships to carbon (C) and to each other. We sought patterns among soil organic C, N, P and S in data for c. 2000 globally distributed soil samples, covering all soil horizons. For non-peat soils, strong negative correlations (p < 0.001) were found between N:C, P:C and S:C ratios and % organic carbon (OC), showing that SOM of soils with low OC concentrations (high in mineral matter) is rich in N, P and S. The results can be described approximately with a simple mixing model in which nutrient-poor SOM (NPSOM) has N:C, P:C and S:C ratios of 0.039, 0.0011 and 0.0054, while nutrient-rich SOM (NRSOM) has corresponding ratios of 0.12, 0.016 and 0.016, so that P is especially enriched in NRSOM compared to NPSOM. The trends hold across a range of ecosystems, for topsoils, including O horizons, and subsoils, and across different soil classes. The major exception is that tropical soils tend to have low P:C ratios especially at low N:C. We suggest that NRSOM comprises compounds selected by their strong adsorption to mineral matter. The stoichiometric patterns established here offer a new quantitative framework for SOM classification and characterisation, and provide important constraints to dynamic soil and ecosystem models of carbon turnover and nutrient dynamics. © 2016, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83362
Appears in Collections: 气候减缓与适应 气候变化事实与影响
There are no files associated with this item.
作者单位: Centre for Ecology and Hydrology, Lancaster Environment Centre, Lancaster, United Kingdom; Department of Marine and Environmental Science, Northeastern University, 365 Huntington Ave, Boston, MA, United States; Swiss Federal Research Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland
Recommended Citation:
Tipping E.,Somerville C.J.,Luster J.. The C:N:P:S stoichiometry of soil organic matter[J]. Biogeochemistry,2016-01-01,130(2018-01-02)