干旱区生态环境知识资源中心(Arid): The effect of development in water-saving irrigation techniques on spatial-temporal variations in crop water footprint and benchmarking

Arid

DOI	10.1016/j.jhydrol.2019.123916
	The effect of development in water-saving irrigation techniques on spatial-temporal variations in crop water footprint and benchmarking
	Wang, Wei 1; Zhuo, La 2,3,4; Li, Meng 1,3; Liu, Yili 1,3; Wu, Pute 2,4
通讯作者	Zhuo, La
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	577
英文摘要	Improved spatial and temporal resolutions in quantification enable the water footprint (WF) in crop production to be a comprehensive indicator of water consumption in agricultural water management. In general, existing literature focus on the impact of water-saving irrigation techniques on crop yield and water consumption during the growth period at sites or experimental units, few studies yet that explicitly addresses the effect of developments in water-saving irrigation techniques on large-scale WF accounting and benchmarking. Here, we fill this gap through a case study for wheat in China over 2000-2014, during which the micro-irrigated wheat area expanded 14 times. The green and blue WFs of China's wheat per year are estimated at a 5 arc-minute resolution. For irrigated wheat, we distinguish three irrigation techniques: furrow, sprinkler and micro-irrigation. The WF benchmarks by irrigation type are further estimated separately for arid and humid zones. Irrigation accounted for 70% of annual WF in China's wheat land, while furrow irrigation dominated the national total WF. The occupation by WF under micro-irrigation was the smallest but jumped by 14 times in quantity whereas that under sprinkler halved. China's average WF per ton of wheat under sprinkler irrigation was 21% higher than that under micro-irrigation in 2014. The 20th percentile WF benchmarks of wheat under micro-irrigation was 13% and 31% smaller than that under furrow and sprinkler irrigation, respectively, in arid zones. Meanwhile, high provincial heterogeneities in terms of WF under varied distribution of irrigation techniques were also shown. The study shows possibility and importance to account for developments of water-saving techniques in large-scale crop WF estimations.
英文关键词	Irrigation techniques Water footprint accounting Water footprint benchmark Spatial-temporal variations
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000488304300004
WOS关键词	SIMULATE YIELD RESPONSE ; HIGH-RESOLUTION ; WINTER-WHEAT ; BLUE ; PRODUCTIVITY ; GREEN ; CHINA ; MODEL ; TRADE ; CONSUMPTION
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
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/2XILL650/217183
作者单位	1.Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China; 2.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China; 3.Northwest A&F Univ, Inst Water Saving Agr Arid Reg China, Yangling 712100, Shaanxi, Peoples R China; 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Wang, Wei,Zhuo, La,Li, Meng,et al. The effect of development in water-saving irrigation techniques on spatial-temporal variations in crop water footprint and benchmarking[J]. 西北农林科技大学,2019,577.
APA	Wang, Wei,Zhuo, La,Li, Meng,Liu, Yili,&Wu, Pute.(2019).The effect of development in water-saving irrigation techniques on spatial-temporal variations in crop water footprint and benchmarking.JOURNAL OF HYDROLOGY,577.
MLA	Wang, Wei,et al."The effect of development in water-saving irrigation techniques on spatial-temporal variations in crop water footprint and benchmarking".JOURNAL OF HYDROLOGY 577(2019).