气候变化领域集成服务门户(CCPortal): Effects of carbonate minerals and exogenous acids on carbon flux from the chemical weathering of granite and basalt

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DOI	10.1016/j.gloplacha.2023.104053
	Effects of carbonate minerals and exogenous acids on carbon flux from the chemical weathering of granite and basalt
	Li, Chaojun; Smith, Pete; Bai, Xiaoyong; Tan, Qiu; Luo, Guangjie; Li, Qin; Wang, Jinfeng; Wu, Luhua; Chen, Fei; Deng, Yuanhong; Hu, Zeyin; Yang, Yujie; Tian, Shiqi; Lu, Qian; Xi, Huipeng; Ran, Chen; Zhang, Sirui
发表日期	2023
ISSN	0921-8181
EISSN	1872-6364
卷号	221
英文摘要	The chemical weathering of silicate rocks can yield bicarbonate which is transported via rivers to the ocean, followed by the deposition of carbonate, acting as a carbon sink on long time scales. The dissolution of carbonate minerals and the participation of exogenous acids (e.g., sulfuric acid and nitric acid) also affect the chemical weathering process. However, their effects have rarely been quantified at the global scale. Here, based on a compilation of time series datasets of hydro-chemistry samples from 3573 monitoring sites and high-resolution hydro-meteorological datasets, we quantified the effects of carbonate minerals and exogenous acids on the carbon fluxes from the chemical weathering of granite and basalt. The calculated true carbon fluxes of the chemical weathering of granite and basalt were approximately 28.72 Tg C/yr and 30.42 Tg C/yr on the global grid scale. Although the effects of exogenous acids to the true carbon fluxes of the chemical weathering from granite and basalt were similar, corresponding to 30% and 28% of the estimated cation fluxes, respectively, the effect of carbonate minerals on the chemical weathering of granite was approximately twice the effect on the chemical weathering of basalt. These discrepancies were caused by the differences in the chemical weathering characteristics and the laws that integrated the different effects of basalt and granite. Our results address the roles of carbonate minerals and exogenous acids in the global carbon cycle and their link to CO2 consumption via the chemical weathering of silicate rocks.
英文关键词	Carbonate minerals; Rock weathering; Carbon sink; Silicate; Climate change
语种	英语
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000927550000001
来源期刊	GLOBAL AND PLANETARY CHANGE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/281549
作者单位	Chinese Academy of Sciences; Guiyang Institute of Geochemistry, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; University of Aberdeen; Guizhou Normal University; Guizhou Education University; Chinese Academy of Sciences
推荐引用方式 GB/T 7714	Li, Chaojun,Smith, Pete,Bai, Xiaoyong,et al. Effects of carbonate minerals and exogenous acids on carbon flux from the chemical weathering of granite and basalt[J],2023,221.
APA	Li, Chaojun.,Smith, Pete.,Bai, Xiaoyong.,Tan, Qiu.,Luo, Guangjie.,...&Zhang, Sirui.(2023).Effects of carbonate minerals and exogenous acids on carbon flux from the chemical weathering of granite and basalt.GLOBAL AND PLANETARY CHANGE,221.
MLA	Li, Chaojun,et al."Effects of carbonate minerals and exogenous acids on carbon flux from the chemical weathering of granite and basalt".GLOBAL AND PLANETARY CHANGE 221(2023).