干旱区生态环境知识资源中心(Arid): Natural water input deposit little atmospheric carbon into groundwater in a desert

Arid

DOI	10.1016/j.catena.2020.105097
	Natural water input deposit little atmospheric carbon into groundwater in a desert
	Fa, Keyu; Xie, En; Zhao, Xiao; Wang, Chaozi
通讯作者	Xie, E ; Zhao, X (corresponding author), China Agr Univ, Coll Water Resources & Civil Engn, 17 Qinghua East Rd, Beijing, Peoples R China.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	199
英文摘要	Anomalous CO2 absorption by soils in drylands has been reported worldwide. It has been reported that atmospheric carbon can first be converted into soil dissolved inorganic carbon, and then be carried and rapidly sequestered in groundwater through irrigation (artificial water input). Nevertheless, the deposition rate may be inapplicable in drylands without artificial water input, and the fate of the atmospheric carbon may also be different. Here, we assessed the amount of the local rainfall, evaluated the elapsed time of the natural water infiltration and the feldspar weathering-induced carbon consumption rate, and analysed the characteristics of soil inorganic carbon in the Mu Us Desert, northwest China, where we have previously studied abiotic atmospheric carbon absorption and the soil water input mainly derives from precipitation. The results showed that, even with extreme precipitation, the inputted water could not rapidly transport carbon to the first aquiclude, indicating that natural water input cannot deposit the majority of the atmospheric carbon absorbed by soil into groundwater. Further analysis indicated that feldspar weathering might be able to rapidly consume most of the atmospheric carbon. The consumed carbon would be converted into pedogenic carbonate and conserved in subsoil due to the transportation of inputted water. These results can provide a basis for determining the fate of atmospheric carbon absorbed by soils in drylands.
英文关键词	Rainfall Carbon deposition rate Pedogenic carbonate Feldspar weathering Drylands
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000608022600014
WOS关键词	NET ECOSYSTEM CO2 ; INORGANIC CARBON ; SOIL ; EXCHANGE ; SEQUESTRATION ; DIOXIDE ; VARIABILITY ; ABSORPTION ; SINK
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	中国农业大学 ; 北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347774
作者单位	[Fa, Keyu; Xie, En; Zhao, Xiao; Wang, Chaozi] China Agr Univ, Coll Water Resources & Civil Engn, 17 Qinghua East Rd, Beijing, Peoples R China; [Fa, Keyu] Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Fa, Keyu,Xie, En,Zhao, Xiao,et al. Natural water input deposit little atmospheric carbon into groundwater in a desert[J]. 中国农业大学, 北京林业大学,2021,199.
APA	Fa, Keyu,Xie, En,Zhao, Xiao,&Wang, Chaozi.(2021).Natural water input deposit little atmospheric carbon into groundwater in a desert.CATENA,199.
MLA	Fa, Keyu,et al."Natural water input deposit little atmospheric carbon into groundwater in a desert".CATENA 199(2021).