气候变化领域集成服务门户(CCPortal): Abiotic and biotic controls on soil organo mineral interactions: Developing model structures to analyze why soil organic matter persists

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DOI	10.2138/rmg.2019.85.11
	Abiotic and biotic controls on soil organo mineral interactions: Developing model structures to analyze why soil organic matter persists
	Dwivedi D.; Tang J.; Bouskill N.; Georgiou K.; Chacon S.S.; Riley W.J.
发表日期	2020
ISSN	1529-6466
起始页码	329
结束页码	348
卷号	85 期号:1
英文摘要	Soil organic matter (SOM) represents the single largest actively cycling reservoir of terrestrial organic carbon, accounting for more than three times as much carbon as that present in the atmosphere or terrestrial vegetation (Schmidt et al. 2011; Lehmann and Kleber 2015). SOM is vulnerable to decomposition to either CO2 or CH4, which can increase atmospheric greenhouse gas concentrations (GHGs) and serve as a positive feedback to climate change. Conversely, the formation and stabilization of SOM within aggregates or associated with soil minerals can lead to carbon sequestration, representing a negative feedback to climate change. However, the conundrum as to why some SOM decomposes rapidly, while other thermodynamically unstable SOM can persist on centennial time scales (Hedges et al. 2000), leads to substantial uncertainty in model structures, as well as uncertainty in the predictability of the land carbon sink trajectory. This chapter aims to tackle a part of this problem through generating recommendations for improved model structure in the representation of SOM cycling within global Earth System Models. The chapter is organized as follows: We first review the recent work contributing to the understanding of SOM stability. Then, we discuss current model structures and how these model structures deal with various processes, including data-model integration, microbial modeling, organo mineral interactions, and SOM persistence. Finally, we conclude with recommendations for the future development of soil carbon models and the required relevant processes that determine the stability of SOM. © 2019 Mineralogical Society of America.
语种	英语
scopus关键词	Biogeochemistry; Climate change; Greenhouse gases; Minerals; Model structures; Organic carbon; Soils; Stabilization; Atmospheric greenhouse; Carbon sequestration; Earth system model; Gas concentration; Mineral interactions; Model integration; Soil organic matters; Terrestrial vegetation; Feedback; air-soil interaction; climate change; mineral; organic carbon; reservoir; soil carbon; soil organic matter; soil stabilization; terrestrial ecosystem
来源期刊	Reviews in Mineralogy and Geochemistry
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/163614
作者单位	Geosciences Division Lawrence, Berkeley National Laboratory, 1 Cyclotron Road, M.S. 74R316C, Berkeley, CA 94720, United States; Climate and Environmental Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, M.S. 74R316C, Berkeley, CA 94720, United States; Department of Earth System Science, Stanford University, Stanford, CA 94305, United States
推荐引用方式 GB/T 7714	Dwivedi D.,Tang J.,Bouskill N.,et al. Abiotic and biotic controls on soil organo mineral interactions: Developing model structures to analyze why soil organic matter persists[J],2020,85(1).
APA	Dwivedi D.,Tang J.,Bouskill N.,Georgiou K.,Chacon S.S.,&Riley W.J..(2020).Abiotic and biotic controls on soil organo mineral interactions: Developing model structures to analyze why soil organic matter persists.Reviews in Mineralogy and Geochemistry,85(1).
MLA	Dwivedi D.,et al."Abiotic and biotic controls on soil organo mineral interactions: Developing model structures to analyze why soil organic matter persists".Reviews in Mineralogy and Geochemistry 85.1(2020).