气候变化领域集成服务门户(CCPortal): Quantifying Dissolved Organic Carbon Dynamics Using a Three-Dimensional Terrestrial Ecosystem Model at High Spatial-Temporal Resolutions

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DOI	10.1029/2019MS001792
	Quantifying Dissolved Organic Carbon Dynamics Using a Three-Dimensional Terrestrial Ecosystem Model at High Spatial-Temporal Resolutions
	Liao C.; Zhuang Q.; Leung L.R.; Guo L.
发表日期	2019
ISSN	19422466
起始页码	4489
结束页码	4512
卷号	11 期号:12
英文摘要	Arctic terrestrial ecosystems are very sensitive to the global climate change due to the large storage of soil organic carbon and the presence of snow, glacier, and permafrost, which respond directly to near surface air temperature that has warmed in the Arctic by almost twice as much as the global average. These ecosystems play a significant role in affecting regional and global carbon cycling, which have been traditionally quantified using biogeochemical models that have not explicitly considered the loss of carbon due to lateral flow of water from land to aquatic ecosystems. Building upon an extant spatially distributed hydrological model and a process-based biogeochemical model, we have developed a three-dimensional terrestrial ecosystem model to elucidate how lateral water flow has impacted the regional dissolved organic carbon (DOC) dynamics in the Tanana Flats Basin in central Alaska. The model explicitly simulates the production, consumption, and transport of DOC. Both in situ observational data and remote sensing-based products were used to calibrate and validate the model. Our simulations show that (1) plant litter DOC leaching exerts significant controls on soil DOC concentration during precipitation and snowmelt events, (2) lateral transport plays an important role in affecting regional DOC dynamics, and (3) DOC export to the Tanana River is approximately 9.6 × 106 kg C year−1. This study provides a modeling framework to adequately quantify the Arctic land ecosystem carbon budget by considering the lateral transport of carbon affected by permafrost degradation. The quantification of the lateral carbon fluxes will also improve future carbon cycle modeling for Arctic aquatic ecosystems. © 2019. The Authors.
英文关键词	carbon cycle; DOC; ecosystem; lateral flow; three-dimensional; water cycle
语种	英语
scopus关键词	Aquatic ecosystems; Biogeochemistry; Budget control; Climate change; Digital storage; Ecosystems; Permafrost; Remote sensing; Stream flow; Three dimensional computer graphics; Arctic terrestrial ecosystems; Biogeochemical modeling; Carbon cycles; Dissolved organic carbon; Lateral Flow; Near surface air temperature; Spatially distributed hydrological model; Water cycle; Organic carbon; air temperature; aquatic ecosystem; biogeochemical cycle; carbon budget; carbon cycle; climate change; hydrological cycle; permafrost; quantitative analysis; terrestrial ecosystem; three-dimensional modeling; Alaska; Tanana River; United States
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/156795
作者单位	Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN, United States; Department of Agronomy, Purdue University, West Lafayette, IN, United States; School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI, United States
推荐引用方式 GB/T 7714	Liao C.,Zhuang Q.,Leung L.R.,et al. Quantifying Dissolved Organic Carbon Dynamics Using a Three-Dimensional Terrestrial Ecosystem Model at High Spatial-Temporal Resolutions[J],2019,11(12).
APA	Liao C.,Zhuang Q.,Leung L.R.,&Guo L..(2019).Quantifying Dissolved Organic Carbon Dynamics Using a Three-Dimensional Terrestrial Ecosystem Model at High Spatial-Temporal Resolutions.Journal of Advances in Modeling Earth Systems,11(12).
MLA	Liao C.,et al."Quantifying Dissolved Organic Carbon Dynamics Using a Three-Dimensional Terrestrial Ecosystem Model at High Spatial-Temporal Resolutions".Journal of Advances in Modeling Earth Systems 11.12(2019).