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  4. 中国科学院新生代地质与环境重点实验室
Organic carbon transport in the Songhua River, NE China: Influence of land use

文献类型：期刊论文

作者Sun, Huiguo1; Han, Jingtai1,2; Li, Dongwei1; Lu, Xixi3; Zhang, Haibo4; Zhao, Wei4
刊名HYDROLOGICAL PROCESSES
出版日期2017-05-30
卷号31期号:11页码:2062-2075
关键词agricultural activity land use riverine organic carbon stable carbon isotope the Songhua River
ISSN号0885-6087
DOI10.1002/hyp.11173
文献子类Article
英文摘要Carbon transported by rivers is an important component of the global carbon cycle. Here, we report on organic carbon transport along the third largest river in China, the Songhua River, and its major tributaries. Water samples were collected seasonally or more frequently to determine dissolved organic carbon (DOC) and particulate organic carbon (POC) concentrations and C/N and stable carbon isotopic ratios. Principal component analysis and multiple regression analysis of these data, in combination with hydrological records for the past 50 years, were used to determine the major factors influencing the riverine carbon fluxes. Results indicate that the organic carbon in the Songhua River basin is derived mainly from terrestrial sources. In the 2008-2009 hydrological year, the mean concentrations of DOC and POC were 5.87 and 2.36 mg/L, and the estimated fluxes of the DOC and POC were 0.30 and 0.14 t . km(-2) . year(-1), respectively. The riverine POC and DOC concentrations were higher in subcatchments with more cropland, but the area-specific fluxes were lower, owing to decreased discharge. We found that hydrological characteristics and land-use type (whether forest or cropland) were the most important factors influencing carbon transport in this system. Agricultural activity, particularly irrigation, is the principal cause of changes in water discharge and carbon export. Over the last 50 years, the conversion of forest to cropland has reduced riverine carbon exports mainly through an associated decrease in discharge following increased extraction of water for irrigation.
WOS关键词BLACK SOIL REGION ; NORTHEAST CHINA ; NEW-ZEALAND ; FLUXES ; WATER ; NITROGEN ; EROSION ; MATTER ; CATCHMENTS ; INCREASES
WOS研究方向Water Resources
语种英语
WOS记录号WOS:000402884100007
出版者WILEY
资助机构National Natural Science Foundation of China(40703027 ; National University of Singapore(R-109-000-191-646) ; 41172156 ; 41372371 ; 41572167) ; National Natural Science Foundation of China(40703027 ; National University of Singapore(R-109-000-191-646) ; 41172156 ; 41372371 ; 41572167) ; National Natural Science Foundation of China(40703027 ; National University of Singapore(R-109-000-191-646) ; 41172156 ; 41372371 ; 41572167) ; National Natural Science Foundation of China(40703027 ; National University of Singapore(R-109-000-191-646) ; 41172156 ; 41372371 ; 41572167)
源URL[http://ir.iggcas.ac.cn/handle/132A11/52894]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Han, Jingtai
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
3.Natl Univ Singapore, Dept Geog, Singapore, Singapore
4.Hydrol & Water Resources Survey Bur Jilin Prov, Songyuan Branch, Songyuan 138800, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Huiguo,Han, Jingtai,Li, Dongwei,et al. Organic carbon transport in the Songhua River, NE China: Influence of land use[J]. HYDROLOGICAL PROCESSES,2017,31(11):2062-2075.
APA Sun, Huiguo,Han, Jingtai,Li, Dongwei,Lu, Xixi,Zhang, Haibo,&Zhao, Wei.(2017).Organic carbon transport in the Songhua River, NE China: Influence of land use.HYDROLOGICAL PROCESSES,31(11),2062-2075.
MLA Sun, Huiguo,et al."Organic carbon transport in the Songhua River, NE China: Influence of land use".HYDROLOGICAL PROCESSES 31.11(2017):2062-2075.

入库方式： OAI收割

来源：地质与地球物理研究所

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