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Modeling catchment controls on organic carbon fluxes in a meso-scale mountainous river (Luodingjiang), China

文献类型：期刊论文

作者Zhang, Shurong1; Lu, Xi Xi2; Sun, Huiguo3; Han, Jingtai3
刊名QUATERNARY INTERNATIONAL
出版日期2011-11-15
卷号244期号:2页码:296-303
ISSN号1040-6182
DOI10.1016/j.quaint.2010.11.008
文献子类Article
英文摘要This study applied a partial least square regression (PLSR) technique to investigate the relationships between organic carbon fluxes and catchment environmental factors in the Luodingjiang, a meso-scale mountainous tributary of the Zhujiang (Pearl River), China. Catchment environmental characteristics were extracted from various ecological datasets, and river data were developed based on 13 sampling points during six sampling campaigns in 2005. Modeling results indicate that the lithology characterized by rock erodibility in the catchment is the most important control on riverine organic carbon fluxes (dissolved organic carbon (DOC) flux, and particularly particulate organic carbon (POC) flux) and total suspended sediment (TSS) flux in the Luodingjiang. Besides rock erodibility, more environmental variables are positively involved in the model of DOC flux, including precipitation, urban and agricultural area percentages, as well as basin area, while basin slope is negatively involved. Soil organic carbon (SOC) content does not exert a significant control on DOC flux in the study due to its unique spatial distribution with other environmental factors having reverse relationships with DOC flux, such as basin morphology and anthropogenic impacts. The dominant control of lithology on POC flux and TSS flux is considered as a result of the availability of highly erodible rocks in the region, such as coarse-grained granite and poor-cemented purple sandstone. The models developed in this study may be only applicable in the local catchments with similar environmental characteristics, such as hilly regions with weak underlying bedrock. The findings highlight the need for investigating the geographical variations when conducting studies about riverine organic carbon fluxes at the regional or global scale. (C) 2010 Elsevier Ltd and INQUA. All rights reserved.
WOS关键词PRINCIPAL COMPONENTS ; LEAST-SQUARES ; PEARL RIVER ; TRANSPORT ; REGRESSION ; NITROGEN ; EXPORTS ; EROSION
WOS研究方向Physical Geography ; Geology
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000296414300021
资助机构Youth Foundation of Beijing Normal University ; Youth Foundation of Beijing Normal University ; National University of Singapore(R-109-000-086-646) ; National University of Singapore(R-109-000-086-646) ; Youth Foundation of Beijing Normal University ; Youth Foundation of Beijing Normal University ; National University of Singapore(R-109-000-086-646) ; National University of Singapore(R-109-000-086-646) ; Youth Foundation of Beijing Normal University ; Youth Foundation of Beijing Normal University ; National University of Singapore(R-109-000-086-646) ; National University of Singapore(R-109-000-086-646) ; Youth Foundation of Beijing Normal University ; Youth Foundation of Beijing Normal University ; National University of Singapore(R-109-000-086-646) ; National University of Singapore(R-109-000-086-646)
源URL[http://ir.iggcas.ac.cn/handle/132A11/74814]  
专题中国科学院地质与地球物理研究所
通讯作者Zhang, Shurong
作者单位1.Beijing Normal Univ, Sch Water Sci, Beijing 100875, Peoples R China
2.Natl Univ Singapore, Dept Geog, Singapore 117570, Singapore
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Shurong,Lu, Xi Xi,Sun, Huiguo,et al. Modeling catchment controls on organic carbon fluxes in a meso-scale mountainous river (Luodingjiang), China[J]. QUATERNARY INTERNATIONAL,2011,244(2):296-303.
APA Zhang, Shurong,Lu, Xi Xi,Sun, Huiguo,&Han, Jingtai.(2011).Modeling catchment controls on organic carbon fluxes in a meso-scale mountainous river (Luodingjiang), China.QUATERNARY INTERNATIONAL,244(2),296-303.
MLA Zhang, Shurong,et al."Modeling catchment controls on organic carbon fluxes in a meso-scale mountainous river (Luodingjiang), China".QUATERNARY INTERNATIONAL 244.2(2011):296-303.

入库方式： OAI收割

来源：地质与地球物理研究所

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