干旱区生态环境知识资源中心(Arid): Soil water dynamics and groundwater evolutions of check dams under natural rainfall reduction in semi-arid areas

Arid

DOI	10.1016/j.jhydrol.2023.129099
	Soil water dynamics and groundwater evolutions of check dams under natural rainfall reduction in semi-arid areas
	Luo, Zhanbin; Fan, Jun; Shao, Ming'an; Hu, Wei; Yang, Qian; Zhang, Shougang
通讯作者	Fan, J ; Shao, MA
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2023
卷号	617
英文摘要	Stable regional water resource distribution is essential for ecosystems, yet soil water dynamics and groundwater evolutions of check dams remain many uncertainties under natural rainfall reduction in semi-arid areas. To explore these changeable hydrologic processes, continuous fixed-point observation and water balance models were introduced in nearly-four consecutive hydrological years (2018-2021). The results showed that soil water storage presented a downward fluctuation in each soil layer of all land uses. Moreover, the grassland profile moisture descended slowly and had deeper infiltration depths than others, which might be an ideal land-use type for the reservoir's sustainable utilization in check dams. The results also indicated that surface soil moisture (<50 cm) could rapidly respond to a single rainfall event > 10 mm d-1, whereas deep soil moisture (>50 cm) and shallow groundwater fluctuations were mainly affected by annual cumulative precipitation. Furthermore, a conceptual hydrological model of rainwater falling to the ground, percolating through soil profiles, and reaching groundwater through different vegetation covers in check dams has been proposed. Soil infiltration rates varied under different land use types and depths, ranging from 0.82 to 3.47 cm h-1. The groundwater recharge time from accumulated annual rainfall was 69-250 days, whereas the discharge time due to vegetation water consumption and groundwater lateral movement was 66-774 days. With a decrease in annual rainfall, the recharge time gradually increased, whereas the discharge time gradually decreased. These results inaugurate new perspectives for a deeper understanding of ecohydrological equilibrium in check dams and provide theoretical insights into ecological restoration in semi-arid areas.
英文关键词	Soil moisture Shallow groundwater Precipitation Infiltration Land uses Time-series monitoring
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000993498600001
WOS关键词	LAND-USE CHANGE ; CHINESE LOESS PLATEAU ; ELECTRICAL-RESISTIVITY ; VERTICAL-DISTRIBUTION ; SAP FLOW ; MOISTURE ; INFILTRATION ; RECHARGE ; CATCHMENT ; DROUGHT
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/2XILL650/397375
推荐引用方式 GB/T 7714	Luo, Zhanbin,Fan, Jun,Shao, Ming'an,et al. Soil water dynamics and groundwater evolutions of check dams under natural rainfall reduction in semi-arid areas[J],2023,617.
APA	Luo, Zhanbin,Fan, Jun,Shao, Ming'an,Hu, Wei,Yang, Qian,&Zhang, Shougang.(2023).Soil water dynamics and groundwater evolutions of check dams under natural rainfall reduction in semi-arid areas.JOURNAL OF HYDROLOGY,617.
MLA	Luo, Zhanbin,et al."Soil water dynamics and groundwater evolutions of check dams under natural rainfall reduction in semi-arid areas".JOURNAL OF HYDROLOGY 617(2023).