干旱区生态环境知识资源中心(Arid): Episodic extreme rainfall events drive groundwater recharge in arid zone environments of central Australia

Arid

DOI	10.1016/j.ejrh.2022.101005
	Episodic extreme rainfall events drive groundwater recharge in arid zone environments of central Australia
	Boas, T.; Mallants, D.
通讯作者	Mallants, D
来源期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
EISSN	2214-5818
出版年	2022
卷号	40
英文摘要	Understanding the factors controlling groundwater recharge in arid vadose zones is critical for sustainable groundwater management in the face of climate variability and change. Here we estimated groundwater recharge in data sparse regions under arid climate by implementing a multi-model approach using HYDRUS-1D for a century-long time series of meteorological data and site-specific regolith hydraulic properties of a bare soil and a Mulga savanna-type soil in central Australia. Grain-size analysis provided a contiguous 12-m deep profile of hydraulic properties that were generated by means of pedotransfer functions. To account for conceptual model uncertainty in hydraulic properties, eleven pedotransfer functions were applied. Climate data from three stations accounted for spatial heterogeneity in local climate of the Ti Tree Basin study area. Simulated water fluxes in the vadose zone indicated that only rainfall events of more than 150-200 mm resulted in groundwater recharge. Recharge was linked to extreme rainfall associated with monsoonal cyclones. Based on the 130-year climate record, average recharge for the savanna-type vegetation ranged from 4.3 to 7.4 mm/a across the three climate stations, with an overall mean of 4.6 mm/a. The bare soil had an overall mean recharge of 29.5 mm/a, ranging from 23.5 to 35.8 mm/a. Results from this study provide a better understanding of the highly episodic recharge in arid environments and are critical input to sustainably manage groundwater resources.
英文关键词	Groundwater recharge Vadose zone modelling HYDRUS-1D Pedotransfer functions Soil hydraulic properties Ti Tree basin Extreme rainfall events Multi-model approach
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000783254000001
WOS关键词	WATER-RETENTION CHARACTERISTICS ; DIFFERENT CROP/PASTURE ROTATIONS ; PARTICLE-SIZE DISTRIBUTION ; BASIC SOIL DATA ; PEDOTRANSFER FUNCTIONS ; HYDRAULIC CONDUCTIVITY ; MOISTURE RETENTION ; BULK-DENSITY ; CLIMATE VARIABILITY ; MALLEE REGION
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393519
推荐引用方式 GB/T 7714	Boas, T.,Mallants, D.. Episodic extreme rainfall events drive groundwater recharge in arid zone environments of central Australia[J],2022,40.
APA	Boas, T.,&Mallants, D..(2022).Episodic extreme rainfall events drive groundwater recharge in arid zone environments of central Australia.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,40.
MLA	Boas, T.,et al."Episodic extreme rainfall events drive groundwater recharge in arid zone environments of central Australia".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 40(2022).