干旱区生态环境知识资源中心(Arid): Quantitative effects of changes in agricultural irrigation on potential evaporation

Arid

DOI	10.1002/hyp.14057
	Quantitative effects of changes in agricultural irrigation on potential evaporation
	Han, Congying; Zhang, Baozhong; Han, Songjun
通讯作者	Zhang, BZ (corresponding author), China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China.
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2021
卷号	35 期号:2
英文摘要	Evaporation is a key element to the basin's water cycle. Agricultural irrigation has resulted in a significant variation of regional potential evaporation (E-pen). The spatiotemporal variation of E-pen and influencing factors in natural, agricultural, and desert areas in different developmental stages of irrigation in Heihe River Basin (HRB) from 1970 to 2017 were comparatively analysed in this study. This work focused on the correction effect of irrigation on the variation of E-pen. Agricultural water consumption in HRB significantly varied around 1998 due to agricultural development and water policy. Under the influence of irrigation, annual variations of E-pen in agricultural, natural, and desert areas were significantly different. From 1970 to 1998, the annual trend slope of E-pen in natural area only reduced by 1 mm decade(-1), while that in agricultural area significantly decreased by 39 mm decade(-1). After the implementation of water-saving irrigation, E-pen in natural and agricultural areas increased by 11 and 54 mm decade(-1), respectively, from 1998 to 2017. In contrast with natural and agricultural areas, E-pen in desert area decreased by 80 mm decade(-1) from 1970 to 1998 and continuously decreased by 41 mm decade(-1) from 1998 to 2017. However, the regulatory effect of irrigation on E-pen in desert area started to manifest due to the expansion of cultivated land area from 2010 to 2017. Irrigation had a significant regulatory effect on the variation of E-pen in HRB. The regulatory effect was mainly reflected on the aerodynamic term (E-aero). Results indicated that the main meteorological factors influencing E-pen in each region were wind speed, which is 2 m above the surface (U-2), and water vapour deficit (VPD).
英文关键词	contribution evaporation irrigation meteorological factor
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000624003800021
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/2XILL650/350498
作者单位	[Han, Congying; Zhang, Baozhong; Han, Songjun] China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China; [Han, Congying; Zhang, Baozhong; Han, Songjun] Natl Ctr Efficient Irrigat Engn & Technol Res Bei, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Han, Congying,Zhang, Baozhong,Han, Songjun. Quantitative effects of changes in agricultural irrigation on potential evaporation[J],2021,35(2).
APA	Han, Congying,Zhang, Baozhong,&Han, Songjun.(2021).Quantitative effects of changes in agricultural irrigation on potential evaporation.HYDROLOGICAL PROCESSES,35(2).
MLA	Han, Congying,et al."Quantitative effects of changes in agricultural irrigation on potential evaporation".HYDROLOGICAL PROCESSES 35.2(2021).