干旱区生态环境知识资源中心(Arid): Emergy analysis of the blue and green water resources in crop production systems

Arid

DOI	10.1016/j.jclepro.2021.128666
	Emergy analysis of the blue and green water resources in crop production systems
	Shang, Kehui; Zhuo, La; Yang, Xi; Yue, Zhiwei; Zhao, Danyue; Wu, Pute
通讯作者	Zhuo, L (corresponding author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.
来源期刊	JOURNAL OF CLEANER PRODUCTION
ISSN	0959-6526
EISSN	1879-1786
出版年	2021
卷号	319
英文摘要	Water consumption in grain production consists of blue (i.e., surface water and groundwater) and green water (i. e., rainwater), however, is rarely distinguished in existing emergy analysis. Taking four major grain crop production systems (rice, wheat, maize, and soybean) by provinces in mainland China over the period 2001-2016 as the study case, in this study the blue and green water were differentiated, for the first time, in the emergy analysis for crop production systems based on water footprint assessment. Three indicators were estimated per crop per province per year: water resource emergy input (WEI), water resource emergy contribution ratio (WECR), and water resource emergy use efficiency (WEUE). Results show that during the study period, the total WEI into the major grain crop production systems increased by 16.61%; blue and green WEI accounted for 52.64% and 47.36%, respectively, by 2016. Although the blue WECR was higher than green WECR, it decreased significantly over the study period. The annual average green WEUE was 10.99 sej sej-1, 7.7 times the blue; moreover, it increased by 27.28% over the study period. The annual average total WECRs in nine provinces were higher than the national average, but the corresponding total WEUEs were lower than the national average; of these, four were distributed in arid and rainwater-deficient areas of northwest China. The emergy analysis of blue and green water separately provides information for a more precise and efficient water allocation as well as better cropping structures given corresponding water endowments.
英文关键词	Water resource emergy Grain crop Green water Blue water Spatial-temporal variations
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000728681500008
WOS关键词	SIMULATE YIELD RESPONSE ; 3 AGRICULTURAL SYSTEMS ; SUSTAINABILITY ANALYSIS ; FOOTPRINT ; ENERGY ; ECOSYSTEMS ; EFFICIENCY ; MODEL ; RIVER ; FOOD
WOS类目	Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373670
作者单位	[Shang, Kehui; Yang, Xi; Yue, Zhiwei; Zhao, Danyue] Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China; [Zhuo, La; Wu, Pute] Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China; [Zhuo, La; Wu, Pute] Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China; [Zhuo, La; Wu, Pute] Natl Engn Res Ctr Water Saving Irrigat Yangling, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Shang, Kehui,Zhuo, La,Yang, Xi,et al. Emergy analysis of the blue and green water resources in crop production systems[J],2021,319.
APA	Shang, Kehui,Zhuo, La,Yang, Xi,Yue, Zhiwei,Zhao, Danyue,&Wu, Pute.(2021).Emergy analysis of the blue and green water resources in crop production systems.JOURNAL OF CLEANER PRODUCTION,319.
MLA	Shang, Kehui,et al."Emergy analysis of the blue and green water resources in crop production systems".JOURNAL OF CLEANER PRODUCTION 319(2021).