干旱区生态环境知识资源中心(Arid): Impacts of deep-rooted fruit trees on recharge of deep soil water using stable and radioactive isotopes

Arid

DOI	10.1016/j.agrformet.2021.108325
	Impacts of deep-rooted fruit trees on recharge of deep soil water using stable and radioactive isotopes
	Shi, Peijun; Huang, Yannan; Ji, Wangjia; Xiang, Wei; Evaristo, Jaivime; Li, Zhi
通讯作者	Li, Z (corresponding author), Northwest A&F Univ, Coll Nat Resources & Environm, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2021
卷号	300
英文摘要	Deep-rooted fruit trees mine more water from deep soils than their shallow-rooted counterparts. Understanding how deep soil water (DSW) is replenished and subsequently depleted by deep-rooted fruit trees, therefore, are important for informing sustainable water resources management particularly in arid regions. In this study, we collected soil samples from the surface down to 20 m under four land use types (farmland, 8-year apple orchard, 12-year peach orchard, and 25-year apple orchard) in China's Loess Plateau. We then measured the soil water content, stable (delta H-2 and delta O-18) and radioactive (H-3) isotopic compositions. The radioactive isotope was used to constrain the age of soil water while the stable isotopes were used to determine the types of storms that would have contributed to recharging the DSW. We then implemented a soil water balance model to identify the mechanisms underlying the changes in DSW. Mechanistically, our results show that water movement in these soils was predominantly via piston flow. The age of DSW below 8 m was determined to be older than 55 years. Altogether, these results support an interpretation that DSW may have only been recharged by high-intensity, low-frequency rainfall events during the wet season (July to September), but that the magnitude of DSW recharge was likely to be influenced by subsequent water mining by deep-rooted fruit trees. The deep-rooted fruit trees consumed more DSW than farmland vegetation, substantially limiting the magnitude of DSW recharge under the orchards. Our simple soil water balance model, informed by water stable isotopes and supplemented with information from tritium, provides a technique for partitioning soil water balance (SWB) and insights into the long-term effects of land use change on water resources in arid regions.
英文关键词	Water isotopes Recharge mechanism Subsurface water reservoir Loess Plateau Land use change
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000635674500014
WOS关键词	SEMIARID LOESS PLATEAU ; GROUNDWATER RECHARGE ; UNSATURATED ZONE ; APPLE-TREES ; HYDROGEN ISOTOPES ; CHINA ; EVAPOTRANSPIRATION ; VEGETATION ; BALANCE ; TRITIUM
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349314
作者单位	[Shi, Peijun; Huang, Yannan; Ji, Wangjia; Xiang, Wei; Evaristo, Jaivime; Li, Zhi] Northwest A&F Univ, Coll Nat Resources & Environm, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; [Evaristo, Jaivime] Univ Utrecht, Copernicus Inst Sustainable Dev, Utrecht, Netherlands
推荐引用方式 GB/T 7714	Shi, Peijun,Huang, Yannan,Ji, Wangjia,et al. Impacts of deep-rooted fruit trees on recharge of deep soil water using stable and radioactive isotopes[J]. 西北农林科技大学,2021,300.
APA	Shi, Peijun,Huang, Yannan,Ji, Wangjia,Xiang, Wei,Evaristo, Jaivime,&Li, Zhi.(2021).Impacts of deep-rooted fruit trees on recharge of deep soil water using stable and radioactive isotopes.AGRICULTURAL AND FOREST METEOROLOGY,300.
MLA	Shi, Peijun,et al."Impacts of deep-rooted fruit trees on recharge of deep soil water using stable and radioactive isotopes".AGRICULTURAL AND FOREST METEOROLOGY 300(2021).