气候变化领域集成服务门户(CCPortal): Simulating Erosion-Induced Soil and Carbon Delivery From Uplands to Rivers in a Global Land Surface Model

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DOI	10.1029/2020MS002121
	Simulating Erosion-Induced Soil and Carbon Delivery From Uplands to Rivers in a Global Land Surface Model
	Zhang H.; Lauerwald R.; Regnier P.; Ciais P.; Yuan W.; Naipal V.; Guenet B.; Van Oost K.; Camino-Serrano M.
发表日期	2020
ISSN	19422466
卷号	12 期号:11
英文摘要	Global water erosion strongly affects the terrestrial carbon balance. However, this process is currently ignored by most global land surface models (LSMs) that are used to project the responses of terrestrial carbon storage to climate and land use changes. One of the main obstacles to implement erosion processes in LSMs is the high spatial resolution needed to accurately represent the effect of topography on soil erosion and sediment delivery to rivers. In this study, we present an upscaling scheme for including erosion-induced lateral soil organic carbon (SOC) movements into the ORCHIDEE LSM. This upscaling scheme integrates information from high-resolution (3″) topographic and soil erodibility data into a LSM forcing file at 0.5° spatial resolution. Evaluation of our model for the Rhine catchment indicates that it reproduces well the observed spatial and temporal (both seasonal and interannual) variations in river runoff and the sediment delivery from uplands to the river network. Although the average annual lateral SOC flux from uplands to the Rhine River network only amounts to 0.5% of the annual net primary production and 0.01% of the total SOC stock in the whole catchment, SOC loss caused by soil erosion over a long period (e.g., thousands of years) has the potential to cause a 12% reduction in the simulated equilibrium SOC stocks. Overall, this study presents a promising approach for including the erosion-induced lateral carbon flux from the land to aquatic systems into LSMs and highlights the important role of erosion processes in the terrestrial carbon balance. ©2020 The Authors.
英文关键词	carbon cycle; land surface model; lateral carbon transport; soil erosion; upscaling
语种	英语
scopus关键词	Catchments; Climate models; Digital storage; Forestry; Image resolution; Land use; Landforms; Organic carbon; Petroleum reservoir evaluation; Rivers; Runoff; Soils; Surface measurement; Topography; Global land surface; High spatial resolution; Land-use change; Net primary production; Sediment delivery; Soil erodibility; Soil organic carbon; Spatial resolution; Erosion; annual variation; carbon flux; carbon storage; catchment; erodibility; land surface; net primary production; organic carbon; runoff; simulation; soil carbon; soil erosion; spatial resolution; upland region; upscaling; Nigeria; Rhine River; Rivers; Matthiola
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156582
作者单位	Department Geoscience, Environment and Society, Université Libre de Bruxelles, Brussels, Belgium; Laboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE CEA/CNRS/UVSQ, Gif sur Yvette, France; School of Atmospheric Science, Sun Yat-sen University, Guangzhou, China; Department of Geosciences, École Normale Supérieure, Paris, France; UCLouvain, TECLIM - Georges Lemaître Centre for Earth and Climate Research, Louvain-la-Neuve, Belgium; CREAF, Cerdanyola del Vallès, Spain
推荐引用方式 GB/T 7714	Zhang H.,Lauerwald R.,Regnier P.,et al. Simulating Erosion-Induced Soil and Carbon Delivery From Uplands to Rivers in a Global Land Surface Model[J],2020,12(11).
APA	Zhang H..,Lauerwald R..,Regnier P..,Ciais P..,Yuan W..,...&Camino-Serrano M..(2020).Simulating Erosion-Induced Soil and Carbon Delivery From Uplands to Rivers in a Global Land Surface Model.Journal of Advances in Modeling Earth Systems,12(11).
MLA	Zhang H.,et al."Simulating Erosion-Induced Soil and Carbon Delivery From Uplands to Rivers in a Global Land Surface Model".Journal of Advances in Modeling Earth Systems 12.11(2020).