干旱区生态环境知识资源中心(Arid): Improved understanding of how irrigated area expansion enhances precipitation recycling by land-atmosphere coupling

Arid

DOI	10.1016/j.agwat.2024.108904
	Improved understanding of how irrigated area expansion enhances precipitation recycling by land-atmosphere coupling
	Wang, Xuanxuan; Cheng, Yongming; Liu, Liu; Niu, Qiankun; Huang, Guanhua
通讯作者	Liu, L
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2024
卷号	299
英文摘要	Large-scale agricultural activities can intensify atmospheric-terrestrial interactions, of which precipitation recycling plays a critical role. During 1982-2018, irrigated area has dramatically expanded in Northwest China (NWC). In this study, a regional precipitation recycling model-the Brubaker model was used to investigate the precipitation recycling ratio (PRR) and recycled precipitation (RP). Evapotranspiration (ET) estimated by the atmospheric-terrestrial water balance method (A-T) was employed to investigate precipitation recycling. Statistically, there was a turning point in 2002 for the rate in irrigated area increase, from 0.07 x 106 ha/year before 2002-0.217 x 106 ha/year after 2002. There were significant shifts in ET, PRR, and RP in NWC, using the turning point of irrigated area expansion as the line of demarcation. The contribution of the change in irrigated area to PRR increased from 18.3% (1982-2002) to 22.9% (2003-2018) in NWC. Prior to 2002, enhanced RP offset the increased ET by 72.9%. After 2002, the positive effect of irrigated area expansion on precipitation recycling disappeared in NWC. Due to the different climate and irrigation practices at the province level, the variations in irrigated area and their contributions to PRR were examined in three provinces, Xinjiang, Gansu, and Shaanxi. Results based on the Brubaker model and Budyko framework indicate that in Xinjiang and Gansu, the contribution of the irrigated area change after the turning point to PRR were 24.5% and -95.6%, respectively, and there is no potential for continued expansion of irrigated area. In Shaanxi, however, there is potential for continued expansion of irrigated area. The methodology for quantifying the impact of irrigated area change on PRR provides reliable references for the sustainable use of cultivated land and the protection of agricultural water resources.
英文关键词	Irrigation effect Atmospheric-terrestrial interactions Evapotranspiration Moisture transport Water vapor Northwest China
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001249076700001
WOS关键词	ARID REGION ; NORTHWEST CHINA ; WATER ; MOISTURE ; CLIMATE ; IMPACT ; BASIN ; EVAPOTRANSPIRATION ; AGRICULTURE ; EVAPORATION
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402676
推荐引用方式 GB/T 7714	Wang, Xuanxuan,Cheng, Yongming,Liu, Liu,et al. Improved understanding of how irrigated area expansion enhances precipitation recycling by land-atmosphere coupling[J],2024,299.
APA	Wang, Xuanxuan,Cheng, Yongming,Liu, Liu,Niu, Qiankun,&Huang, Guanhua.(2024).Improved understanding of how irrigated area expansion enhances precipitation recycling by land-atmosphere coupling.AGRICULTURAL WATER MANAGEMENT,299.
MLA	Wang, Xuanxuan,et al."Improved understanding of how irrigated area expansion enhances precipitation recycling by land-atmosphere coupling".AGRICULTURAL WATER MANAGEMENT 299(2024).