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  4. 中国科学院新生代地质与环境重点实验室
Modern Silicate Weathering Regimes Across China Revealed by Geochemical Records From Surface Soils

文献类型：期刊论文

作者Guo, Licheng o1; Wu, Jiabin2; Chen, Yulu1,3; Xiong, Shangfa1,3; Cui, Jingyi1,3; Ding, Zhongli1
刊名JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
出版日期2022-10-01
卷号127期号:10页码:21
关键词silicate weathering intensity weathering regime topsoils China
ISSN号2169-9003
DOI10.1029/2022JF006728
英文摘要Knowledge of modern kinetically limited (i.e., silicate weathering depends on temperature and precipitation) and supply-limited (i.e., weathering is limited mainly by the supply of fresh material) weathering regimes is important for analyzing the weathering-CO2-climate system on geological timescales. However, on the global scale, there are large knowledge gaps in modern silicate weathering regimes and their possible shifts, due to the lack of spatial information on in situ weathering processes. Here, we present the first detailed compilation of the major element concentrations in bulk and fine fraction (<2 mu m) samples of surface soils from across China, which we use to investigate modern silicate weathering regimes across China and possible shifts between regimes induced by tectonic uplift and climate changes. The results show that changes in climatic factors, especially precipitation, exert a first-order control on spatial variations in silicate weathering intensity (expressed by the chemical index of alteration, CIA), with additional contributions from nonclimatic factors. Comparison of silicate weathering regimes with the CIA suggests that for bulk samples the supply-limited weathering regime prevails in areas with CIA > 80, and the kinetically limited regime prevails in areas with CIA < 80. A significant inference from the results is that tectonic uplift and global warming could cause shifts between supply-limited and kinetically limited weathering regimes in the active mountain belts and floodplains of southern China and in areas dominated by intermediate chemical weathering. However, no shifts would occur in some of the arid to extremely arid areas of northern China and in highland areas with extreme chemical weathering.
WOS关键词PALEOCENE-EOCENE BOUNDARY ; CHEMICAL INDEX ; FIELD-MEASUREMENTS ; NEGATIVE FEEDBACK ; TECTONIC UPLIFT ; ATMOSPHERIC CO2 ; CARBON-DIOXIDE ; GRAIN-SIZE ; CLAY ; CLIMATE
资助项目"Strategic Priority Research Program" of the Chinese Academy of Sciences[XDA19050104] ; "Strategic Priority Research Program" of the Chinese Academy of Sciences[XDB31030107] ; "Strategic Priority Research Program" of the Chinese Academy of Sciences[XDB26020401] ; National Key R&D Program of China[2017YFA0603404] ; National Natural Science Foundation of China[42007282] ; National Natural Science Foundation of China[42077409] ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences[IGGCAS-201905]
WOS研究方向Geology
语种英语
WOS记录号WOS:000864167800001
出版者AMER GEOPHYSICAL UNION
资助机构"Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology & Geophysics, Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/107796]  
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Guo, Licheng o; Xiong, Shangfa
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China
2.Anyang Inst Technol, Sch Civil & Architectural Engn, Anyang, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Licheng o,Wu, Jiabin,Chen, Yulu,et al. Modern Silicate Weathering Regimes Across China Revealed by Geochemical Records From Surface Soils[J]. JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,2022,127(10):21.
APA Guo, Licheng o,Wu, Jiabin,Chen, Yulu,Xiong, Shangfa,Cui, Jingyi,&Ding, Zhongli.(2022).Modern Silicate Weathering Regimes Across China Revealed by Geochemical Records From Surface Soils.JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,127(10),21.
MLA Guo, Licheng o,et al."Modern Silicate Weathering Regimes Across China Revealed by Geochemical Records From Surface Soils".JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE 127.10(2022):21.

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来源：地质与地球物理研究所

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