干旱区生态环境知识资源中心(Arid): Promotion function of forest vegetation on the water & carbon coupling cycle in karst critical zone: Insights from karst groundwater systems in south China

Arid

DOI	10.1016/j.jhydrol.2020.125246
	Promotion function of forest vegetation on the water & carbon coupling cycle in karst critical zone: Insights from karst groundwater systems in south China
	Kang, Zhiqiang; Chen, Jun; Yuan, Daoxian; He, Shiyi; Li, Yilong; Chang, Yong; Deng, Yan; Chen, Yang; Liu, Yuanyuan; Jiang, Guanghui; Wang, Xinyu; Zhang, Qinjun
通讯作者	Kang, ZQ ; Chen, J (corresponding author), Nanjing Univ, Sch Earth Sci & Engn, MOE Key Lab Surficial Geochem, Nanjing 210093, Peoples R China.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2020
卷号	590
英文摘要	The earth is gradually turning green due to afforestation, especially in China. Because the carbon cycle is driven by the groundwater cycle in karstification, the process of water & carbon coupling cycle (PWCC) in karst forest area can not only promote vegetation growth but also enhance chemical weathering processes of carbonate rocks to absorb more CO2. Therefore, carbon sequestration can occur during the process of ecological restoration in karst areas. However, forest respiration also increases with the vegetation growth which can produce extra CO2 back to atmosphere. To study the promotion function of forest vegetation during different succession stages on the PWCC in karst critical zone, three karst groundwater systems with different vegetation coverages (a native forest, a secondary forest during reforestation and a crop area in rural land) are chosen in southwest China. Their long-term monitoring of indicators, including precipitation (P), partial pressure of air CO2 (P-cO2), groundwater discharge (Q), hydrochemical and isotope components, was conducted. The results indicated that part of CO2 produced by forest respiration diffuses into the atmosphere as a carbon source, and the remaining dissolves into the groundwater, thereby increasing corrodibility. The carbon sequestration mechanism differs at different vegetation succession stages. The secondary forest development stage displays an obvious carbon sequestration effect during the process of rocky desertification control. When the succession stage approaches the top-level ecosystem, the carbon sequestration effect descend sharply until the net carbon sequestration can be ignored.
英文关键词	Water & carbon coupling cycle Karst critical zone Forest vegetation effect Rocky desertification control Southwest China
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000599754500047
WOS关键词	GEOLOGICALLY RELEVANT SITUATIONS ; CALCITE DISSOLUTION ; ISOTOPE COMPOSITION ; FOG-DRIP ; KINETICS ; CO2 ; PRECIPITATION ; AREAS ; EVOLUTION ; IMPACTS
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
来源机构	南京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349009
作者单位	[Kang, Zhiqiang; Chen, Jun; Chang, Yong; Chen, Yang; Liu, Yuanyuan] Nanjing Univ, Sch Earth Sci & Engn, MOE Key Lab Surficial Geochem, Nanjing 210093, Peoples R China; [Kang, Zhiqiang] China ASEAN Geosci Cooperat Ctr, Nanning 530023, Peoples R China; [Kang, Zhiqiang; Wang, Xinyu] Guangxi Bur Geol & Mineral Prospecting & Exploita, Nanning 530023, Peoples R China; [Yuan, Daoxian; He, Shiyi; Deng, Yan; Jiang, Guanghui] Chinese Acad Geol Sci, MNR Key Lab Karst Dynam, Inst Karst Geol, Guilin 541004, Peoples R China; [Li, Yilong] China Univ Geosci, Sch Earth Sci, Wuhan 430074, Peoples R China; [Zhang, Qinjun] Guangxi Inst Geol Survey, Nanning 530023, Peoples R China
推荐引用方式 GB/T 7714	Kang, Zhiqiang,Chen, Jun,Yuan, Daoxian,et al. Promotion function of forest vegetation on the water & carbon coupling cycle in karst critical zone: Insights from karst groundwater systems in south China[J]. 南京大学,2020,590.
APA	Kang, Zhiqiang.,Chen, Jun.,Yuan, Daoxian.,He, Shiyi.,Li, Yilong.,...&Zhang, Qinjun.(2020).Promotion function of forest vegetation on the water & carbon coupling cycle in karst critical zone: Insights from karst groundwater systems in south China.JOURNAL OF HYDROLOGY,590.
MLA	Kang, Zhiqiang,et al."Promotion function of forest vegetation on the water & carbon coupling cycle in karst critical zone: Insights from karst groundwater systems in south China".JOURNAL OF HYDROLOGY 590(2020).