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  2. 地质与地球物理研究所
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  4. 中国科学院新生代地质与环境重点实验室
Geochemistry of the dissolved loads during high-flow season of rivers in the southeastern coastal region of China: anthropogenic impact on chemical weathering and carbon sequestration

文献类型：期刊论文

作者Liu, Wenjing1,2,3; Xu, Zhifang1,2,3; Sun, Huiguo1,3; Zhao, Tong1,3; Shi, Chao3; Liu, Taoze4
刊名BIOGEOSCIENCES
出版日期2018-08-22
卷号15期号:16页码:4955-4971
ISSN号1726-4170
DOI10.5194/bg-15-4955-2018
英文摘要The southeastern coastal region is one of the most developed and populated areas in China. Meanwhile, it has been severely impacted by acid rain over many years. The chemical compositions and carbon isotope compositions of dissolved inorganic carbon (delta C-13(DIC)/in river water in the high-flow season were investigated to estimate the chemical weathering and associated atmospheric CO2 consumption rates as well as the acid-deposition disturbance. Mass balance calculations indicated that the dissolved loads of major rivers in the Southeast Coastal River Basin (SECRB) were contributed to by atmospheric (14.3 %, 6.6 %-23.4 %), anthropogenic (15.7 %, 0 %-41.1 %), silicate weathering (39.5 %, 17.8 %-74.0 %) and carbonate weathering inputs (30.6 %, 3.9 %-62.0 %). The silicate and carbonate chemical weathering rates for these river watersheds were 14.2-35.8 and 1.8-52.1 t km(-2) a(-1), respectively. The associated mean CO2 consumption rate by silicate weathering for the whole SECRB was 191 x 10(3) mol km(-2) a(-1). The chemical and delta C-13(DIC) evidence indicated that sulfuric and nitric acid (mainly from acid deposition) were significantly involved in the chemical weathering of rocks. There was an overestimation of CO2 consumption at 0.19 x 10(12) g Ca-1 if sulfuric and nitric acid were ignored, which accounted for about 33.6% of the total CO2 consumption by silicate weathering in the SECRB. This study quantitatively highlights the role of acid deposition in chemical weathering, suggesting that the anthropogenic impact should be seriously considered in estimations of chemical weathering and associated CO2 consumption.
WOS关键词WATER GEOCHEMISTRY ; CO2 CONSUMPTION ; SOUTH CHINA ; ATMOSPHERIC CO2 ; ACID-RAIN ; TECTONIC EVOLUTION ; EROSION PROCESSES ; PHYSICAL EROSION ; WET DEPOSITION ; SULFURIC-ACID
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB15010405] ; Natural Science Foundation of China[41673020] ; Natural Science Foundation of China[91747202] ; Natural Science Foundation of China[41772380] ; Natural Science Foundation of China[41730857]
WOS研究方向Environmental Sciences & Ecology ; Geology
语种英语
WOS记录号WOS:000442399400002
出版者COPERNICUS GESELLSCHAFT MBH
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/88120]  
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Xu, Zhifang
作者单位1.Chinese Acad Sci, Inst Earth Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Guizhou, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Wenjing,Xu, Zhifang,Sun, Huiguo,et al. Geochemistry of the dissolved loads during high-flow season of rivers in the southeastern coastal region of China: anthropogenic impact on chemical weathering and carbon sequestration[J]. BIOGEOSCIENCES,2018,15(16):4955-4971.
APA Liu, Wenjing,Xu, Zhifang,Sun, Huiguo,Zhao, Tong,Shi, Chao,&Liu, Taoze.(2018).Geochemistry of the dissolved loads during high-flow season of rivers in the southeastern coastal region of China: anthropogenic impact on chemical weathering and carbon sequestration.BIOGEOSCIENCES,15(16),4955-4971.
MLA Liu, Wenjing,et al."Geochemistry of the dissolved loads during high-flow season of rivers in the southeastern coastal region of China: anthropogenic impact on chemical weathering and carbon sequestration".BIOGEOSCIENCES 15.16(2018):4955-4971.

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来源：地质与地球物理研究所

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