气候变化领域集成服务门户(CCPortal): A Synthetic Model to Quantify Dissolved Organic Carbon Transport in the Changjiang River System: Model Structure and Spatiotemporal Patterns

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DOI	10.1029/2019MS001648
	A Synthetic Model to Quantify Dissolved Organic Carbon Transport in the Changjiang River System: Model Structure and Spatiotemporal Patterns
	Lv S.; Yu Q.; Wang F.; Wang Y.; Yan W.; Li Y.
发表日期	2019
ISSN	19422466
起始页码	3024
结束页码	3041
卷号	11 期号:9
英文摘要	Riverine dissolved organic carbon (DOC) is an important carbon pool in the global biogeochemical cycle. DOC transport in river networks involves three processes: DOC input (including DOC release from terrestrial ecosystems and in situ production in river networks), in-river removal, and export through watershed outlets or estuaries. DOC transport in large river networks is gaining attention due to its important role in carbon and nutrient supply and CO2 emission, for example. However, quantifying DOC input to rivers and in-river removal is still not properly understood. This study developed a synthesis model to quantify DOC transport in the Changjiang River Network (CRN) by coupling spiraling theory with Strahler river order. Our study suggested that the wetlands proportion and soil organic matter are valid parameters in a DOC model and our simulations showed that approximately 2.65–4.86 Tg C/year entered rivers and 1.16–2.12 Tg C/year was exported to the estuary as DOC, with a removal proportion of over 50% throughout the CRN in 1980–2015. The subbasins of the Dongting Lake, the Yichang-Jiujiang section of the mainstream, and the Min-Tuo River were primary contributors of DOC load, accounting for approximately 45% of the bulk DOC load of the CRN. The subbasins of Jinsha River and Yalong River in the upper reaches of the CRN and the subbasin of Wu River contributed less than 10% of the DOC load. DOC export by the CRN accounted for 0.3–1.2% of the global DOC flux from land to sea. ©2019. The Authors.
英文关键词	Changjiang River Network; dissolved organic carbon; in-river removal; riverine transport; spatiotemporal patterns
语种	英语
scopus关键词	Biogeochemistry; Dissolution; Ecology; Organic carbon; Stream flow; Biogeochemical cycle; Dissolved organic carbon; In-situ production; River network; riverine transport; Soil organic matters; Spatiotemporal patterns; Terrestrial ecosystems; Rivers; carbon cycle; dissolved organic carbon; pollutant removal; pollutant transport; spatiotemporal analysis; watershed; China; Dongting Lake; Hubei; Hunan; Jiangxi; Jinsha River; Jiujiang; Min River [Sichuan]; Sichuan; Tuo River; Wu River; Yalong River; Yangtze River; Yichang
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/156858
作者单位	Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin and Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing, China
推荐引用方式 GB/T 7714	Lv S.,Yu Q.,Wang F.,et al. A Synthetic Model to Quantify Dissolved Organic Carbon Transport in the Changjiang River System: Model Structure and Spatiotemporal Patterns[J],2019,11(9).
APA	Lv S.,Yu Q.,Wang F.,Wang Y.,Yan W.,&Li Y..(2019).A Synthetic Model to Quantify Dissolved Organic Carbon Transport in the Changjiang River System: Model Structure and Spatiotemporal Patterns.Journal of Advances in Modeling Earth Systems,11(9).
MLA	Lv S.,et al."A Synthetic Model to Quantify Dissolved Organic Carbon Transport in the Changjiang River System: Model Structure and Spatiotemporal Patterns".Journal of Advances in Modeling Earth Systems 11.9(2019).