干旱区生态环境知识资源中心(Arid): Detecting and attributing the changes in baseflow in China's Loess Plateau

Arid

DOI	10.1016/j.jhydrol.2022.128957
	Detecting and attributing the changes in baseflow in China's Loess Plateau
	Yan, Xin; Sun, Jineng; Huang, Yanan; Xia, Yun; Wang, Zhengshi; Li, Zhi
通讯作者	Wang, ZS ; Li, Z
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2023
卷号	617
英文摘要	Baseflow plays an important role in sustaining the ecosystem during dry seasons or in arid regions, and its spatiotemporal variations greatly influence the stability of ecosystem. Because of climate change and the revegetation project, the streamflow has been reported to significantly decrease in past decades in China's Loess Plateau (CLP); however, the changes in streamflow components have not been fully investigated. The objective of this study is thus to detect and attribute the changes in baseflow in the CLP using data of 55 hydrological stations for 1956-1990 and 2001-2019. The geographic detector, correlation analysis and elasticity coefficient methods were employed to qualitatively and quantitively analyze the influence of various factors on baseflow. The baseflow accounts for 35%-76% of streamflow. The baseflow in 85% of hydrological stations decreased by >10%, while the baseflow index (BFI) of 82% hydrological stations showed an upward trend. Precipitation and hydrogeological condition (e.g., loess thickness) were likely to dominate the spatial heterogeneity of baseflow, while the potential evapotranspiration, population, sub-surface runoff, NDVI and soil water were responsible for the decrease in baseflow with contributions of 27%, 21%, 17%, 16% and 16%, respectively. The consistence or inconsistence between baseflow and BFI as well as their relations to environmental changes provide new insights into the changes in hydrological processes.
英文关键词	Streamflow component Spatiotemporal variation Regional environmental factors Attribution analysis Revegetation
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000911101400001
WOS关键词	SOIL-MOISTURE ; EXTREME PRECIPITATION ; NATURAL VEGETATION ; WATER-RESOURCES ; YELLOW-RIVER ; LAND-USE ; FLOW ; SEPARATION ; CATCHMENT ; CLIMATE
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397384
推荐引用方式 GB/T 7714	Yan, Xin,Sun, Jineng,Huang, Yanan,et al. Detecting and attributing the changes in baseflow in China's Loess Plateau[J],2023,617.
APA	Yan, Xin,Sun, Jineng,Huang, Yanan,Xia, Yun,Wang, Zhengshi,&Li, Zhi.(2023).Detecting and attributing the changes in baseflow in China's Loess Plateau.JOURNAL OF HYDROLOGY,617.
MLA	Yan, Xin,et al."Detecting and attributing the changes in baseflow in China's Loess Plateau".JOURNAL OF HYDROLOGY 617(2023).