The sources and seasonal fluxes of particulate organic carbon in the Yellow River

doi:10.1002/esp.4861

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	The sources and seasonal fluxes of particulate organic carbon in the Yellow River
	Qu, Yuanxin 1,2; Jin, Zhangdong 1,3,4; Wang, Jin 1,3; Wang, Yunqiang 1,3,4; Xiao, Jun 1,3; Gou, Long-Fei 1,2; Zhang, Fei 1,3; Liu, Chun-Yao 1,2; Gao, Yongli 5; Suarez, Marina B.6; Xu, Xiaomei 7
通讯作者	Jin, Zhangdong(zhdjin@ieecas.cn)
	2020-04-02
发表期刊	EARTH SURFACE PROCESSES AND LANDFORMS
ISSN	0197-9337
页码	16
摘要	The Yellow River transports a large amount of sediment and particulate organic carbon (POC), which is thought to mainly derive from erosion of the Chinese Loess Plateau (CLP). However, the compositions, sources and erosional fluxes of POC in the Yellow River remain poorly constrained. Here we combined measurements of mineralogy, total organic carbon content (OCtotal), stable organic carbon isotopes (delta C-13(org)), radiocarbon (C-14) activity of organic matter in bulk suspended sediments collected seasonally from the upper and middle Yellow River, to quantify the compositions and fluxes of the POC and to assess its sources (biospheric and petrogenic POC, i.e. POCbio and POCpetro, respectively). The results showed that the POC loading of sediments was controlled by mineralogy, grain size and specific surface area of loess particles. The F-mod of POC (0.71 to 0.31) can be explained by mixing of POCpetro with modern and aged POCbio. A binary mixing model based on the hyperbolic relationship of the F-mod and OCtotal revealed a wide range of ages of POCbio from 1300 to 11100 C-14 years. Relative to the upstream station, the annual POCbio and POCpetro fluxes in the Yellow River are more than doubled after it flows crossing the CLP within 35% drainage area gain, resulting in POCbio and POCpetro yields of the CLP at 3.50 +/- 0.59 and 0.48 +/- 0.49 tC/km(2)/yr, respectively. POC flux seasonal variation revealed that monsoon rainfall exerts a first-order control on the export of both POCbio and POCpetro from the CLP to the Yellow River, resulting in more than 90% of the annual POC exported during the monsoon season. Around one third of annual POC erosional flux was transported during a storm event period, highlighting the important role of extreme events in POC export in this large river. (c) 2020 John Wiley & Sons, Ltd.
关键词	Chinese Loess Plateau the Yellow River particulate organic carbon annual fluxes radiocarbon
DOI	10.1002/esp.4861
关键词[WOS]	CHINESE LOESS PLATEAU ; SOIL-EROSION CONTROL ; PAST 50 YEARS ; SEDIMENT LOAD ; SPATIOTEMPORAL VARIATIONS ; SUSPENDED SEDIMENT ; BIOSPHERIC CARBON ; CLIMATE-CHANGE ; LOWER REACHES ; TRANSPORT
收录类别	SCI ; SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDA20070102] ; NSFC Program[41773149]
WOS研究方向	Physical Geography ; Geology
项目资助者	Strategic Priority Research Program of Chinese Academy of Sciences ; NSFC Program
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000522778200001
出版者	WILEY
引用统计	被引频次：29[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/12526
专题	加速器质谱中心第四纪科学与全球变化卓越创新中心
通讯作者	Jin, Zhangdong
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China 4.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian, Peoples R China 5.Univ Texas San Antonio, Dept Geol Sci, Ctr Water Res, San Antonio, TX USA 6.Univ Texas San Antonio, Dept Geol Sci, San Antonio, TX USA 7.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA USA
推荐引用方式 GB/T 7714	Qu, Yuanxin,Jin, Zhangdong,Wang, Jin,et al. The sources and seasonal fluxes of particulate organic carbon in the Yellow River[J]. EARTH SURFACE PROCESSES AND LANDFORMS,2020:16.
APA	Qu, Yuanxin.,Jin, Zhangdong.,Wang, Jin.,Wang, Yunqiang.,Xiao, Jun.,...&Xu, Xiaomei.(2020).The sources and seasonal fluxes of particulate organic carbon in the Yellow River.EARTH SURFACE PROCESSES AND LANDFORMS,16.
MLA	Qu, Yuanxin,et al."The sources and seasonal fluxes of particulate organic carbon in the Yellow River".EARTH SURFACE PROCESSES AND LANDFORMS (2020):16.