干旱区生态环境知识资源中心(Arid): Modelling crop yield, water consumption, and water use efficiency for sustainable agroecosystem management

Arid

DOI	10.1016/j.jclepro.2019.119940
	Modelling crop yield, water consumption, and water use efficiency for sustainable agroecosystem management
	Liu, Yaqun 1,2; Song, Wei 1
通讯作者	Song, Wei
来源期刊	JOURNAL OF CLEANER PRODUCTION
ISSN	0959-6526
EISSN	1879-1786
出版年	2020
卷号	253
英文摘要	Agroecosystems provide food, energy, and essential services, while accounting for 80% of the world's total water use. Producing more food with limited water resources or improving water use efficiency (WUE) is an urgent task, especially in arid and semi-arid areas with fragile ecosystems and severe water shortages. This study integrated crop type distribution, irrigation data, remote sensing imagery, and meteorological factors to simulate the crop yield, water consumption, and WUE in the Heihe River Basin of China during 2007-2012. We found that variations in water consumption had little impact on crop yield because the value far exceeded the actual water requirement. From 2007 to 2012, the water consumption of corn increased by 11.24%, while its yield decreased by 0.63%. In contrast, the water con-sumptions of wheat, oilseed rape, and other crops decreased by 15.45%, 10.32%, and 4.61%, while their yields increased by 2.41%, 8.91%, and 1.13%, respectively. Consequently, the WUE of corn decreased by 10.68%, while that of oilseed rape, wheat, barley, and other crops increased by 21.44%, 21.13%, 4.96%, and 6.02%, respectively. The expansion of the area planted with corn led to a 3.36% increase in the WUE of the basin. However, this agricultural development is clearly unsustainable because it increased agricultural water consumption and decreased the ecological and domestic water supply. On-demand irrigation is therefore necessary to reduce water wastage and improve WUE. This would have reduced agricultural water consumption in 2007 and 2012 by 32.58% and 30.13%, and the WUEs would have increased by 48.33% and 43.12%, respectively. Sustainable water-efficient management should comprehensively consider the economic benefits and environmental burdens in crop structure adjustment, irrigation practices, and field management. Additionally, a knowledge-exchange system among experts, resource managers, and farmers is crucial for improving WUE strategies for sustainable agroecosystem development. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Water use efficiency Crop yield simulation Crop water requirement On-demand irrigation Water-efficient management Knowledge-exchange system
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000516788400076
WOS关键词	HEIHE RIVER-BASIN ; NET PRIMARY PRODUCTION ; GROSS PRIMARY PRODUCTION ; LIGHT USE EFFICIENCY ; WINTER-WHEAT ; PRIMARY PRODUCTIVITY ; ECOSYSTEM SERVICE ; CLIMATE-CHANGE ; ZHANGYE CITY ; IRRIGATION
WOS类目	Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314920
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, 11A Datun Rd, Beijing 100101, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yaqun,Song, Wei. Modelling crop yield, water consumption, and water use efficiency for sustainable agroecosystem management[J]. 中国科学院地理科学与资源研究所,2020,253.
APA	Liu, Yaqun,&Song, Wei.(2020).Modelling crop yield, water consumption, and water use efficiency for sustainable agroecosystem management.JOURNAL OF CLEANER PRODUCTION,253.
MLA	Liu, Yaqun,et al."Modelling crop yield, water consumption, and water use efficiency for sustainable agroecosystem management".JOURNAL OF CLEANER PRODUCTION 253(2020).