Seasonal fluxes and source variation of organic carbon transported by two major Chinese Rivers: The Yellow River and Changjiang (Yangtze) River

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	Seasonal fluxes and source variation of organic carbon transported by two major Chinese Rivers: The Yellow River and Changjiang (Yangtze) River
	Wang, Xuchen 1,2; Ma, Haiqing 2; Li, Ronghua 3; Song, Zhensu 3; Wu, Jinping 4
刊名	GLOBAL BIOGEOCHEMICAL CYCLES
	2012-05-25
卷号	26 页码:GB2025
关键词	LOWER MISSISSIPPI RIVER ARCTIC-OCEAN TEMPORAL VARIABILITY NORTH-ATLANTIC TURBID RIVERS MATTER ESTUARY SEDIMENT HUANGHE SYSTEM
ISSN号	0886-6236
通讯作者	Wang, XC (reprint author), Univ Massachusetts, Dept Environm Earth & Ocean Sci, 100 Morrissey Blvd, Boston, MA 02125 USA.
英文摘要	A one-year study was carried out to investigate the seasonal fluxes and source variation of organic carbon transported by two major Chinese rivers, the Yellow River and Changjiang. In 2009, the Yellow River and Changjiang transported 3.20 x 10(10) g and 1.58 x 10(12) g DOC and 3.89 x 10(11) g and 1.52 x 10(12) g POC, respectively. The dominant input of the terrestrial organic matter occurred during the high discharge period from June to July for the Yellow River and from June to August for Changjiang, accounting for 36-44% of the DOC and 72-86% of the POC transported by the two rivers in 2009. The Yellow River transported much higher concentrations of inorganic carbon than organic carbon, while a reverse trend was found in the Changjiang, indicating the different sources of carbon discharged by the two rivers. Using radiocarbon and stable carbon isotope measurements, we identified the different sources and seasonal variations of organic carbon transported by the Yellow River and Changjiang. The Yellow River carried old POC with radiocarbon ages ranging from 4000 to 8000 years, while POC transported by Changjiang had a relatively younger C-14 age ranging from 800 to 1060 years. The C-14 ages of DOC were relatively younger (305-1570 years) and showed less variation between the two rivers. The seasonal variations found in C-14 ages of DOC and POC indicate that a large fraction of recent-fixed labile organic carbon was transported by the two rivers in the spring and summer months. The different sources and seasonal variations in both fluxes and sources of organic carbon transported by the Yellow River and Changjiang could have an important influence on the biogeochemical cycle and ecosystems in the estuaries and adjacent coastal waters of the East China Sea.
学科主题	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
收录类别	SCI
原文出处	10.1029/2011GB004130
语种	英语
WOS记录号	WOS:000304550900001
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/12439]
专题	海洋研究所_海洋生态与环境科学重点实验室
作者单位	1.Univ Massachusetts, Dept Environm Earth & Ocean Sci, Boston, MA 02125 USA 2.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 3.Yellow River Lijin Hydrog Stn, Lijin, Peoples R China 4.Changjiang Datong Hydrog Stn, Datong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xuchen,Ma, Haiqing,Li, Ronghua,et al. Seasonal fluxes and source variation of organic carbon transported by two major Chinese Rivers: The Yellow River and Changjiang (Yangtze) River[J]. GLOBAL BIOGEOCHEMICAL CYCLES,2012,26:GB2025.
APA	Wang, Xuchen,Ma, Haiqing,Li, Ronghua,Song, Zhensu,&Wu, Jinping.(2012).Seasonal fluxes and source variation of organic carbon transported by two major Chinese Rivers: The Yellow River and Changjiang (Yangtze) River.GLOBAL BIOGEOCHEMICAL CYCLES,26,GB2025.
MLA	Wang, Xuchen,et al."Seasonal fluxes and source variation of organic carbon transported by two major Chinese Rivers: The Yellow River and Changjiang (Yangtze) River".GLOBAL BIOGEOCHEMICAL CYCLES 26(2012):GB2025.