干旱区生态环境知识资源中心(Arid): Life cycle assessment of alfalfa production and potential environmental improvement measures in Northwest China

Arid

DOI	10.1016/j.jclepro.2021.127025
	Life cycle assessment of alfalfa production and potential environmental improvement measures in Northwest China
	Wang, Xiaoqin; Ledgard, Stewart; Luo, Jiafa; Chen, Yan; Tian, Yanqin; Wei, Zhibiao; Liang, Dongli; Ma, Lin
通讯作者	Wang, XQ (corresponding author), Northwest Agr & Forestry Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China. ; Ma, L (corresponding author), Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res, Key Lab Agr Water Resources, Shijiazhuang 050021, Hebei, Peoples R China.
来源期刊	JOURNAL OF CLEANER PRODUCTION
ISSN	0959-6526
EISSN	1879-1786
出版年	2021
卷号	304
英文摘要	Alfalfa is an important legume forage crop and environmental impacts of producing it differ with its production systems and regions. Despite its high water consumption, a comprehensive assessment of combining water consumption with other environmental impacts has not been carried out. The objectives of this study were to evaluate water consumption and other important environmental indicators for four main alfalfa production systems in Northwest China and to investigate improvement measures to reduce environmental impacts. A life cycle assessment approach coupled with CropWat modelling was used for the study. Compared with the low agricultural input systems NFNI (no fertilization or irrigation) and AFNI (applying fertilizer without irrigation), the high agricultural input systems AFRI (fertilization and irrigated with river-water) and AFWI (fertilization and irrigated with well-water) achieved higher yields with lower land use (LU), but led to higher environmental impacts on water resource consumption (WRC), global warming potential (GWP) and other impacts. Except for LU, the NFNI system had the least impacts on almost all environmental indicators, while the AFWI had the most adverse impacts. A tradeoff between LU, WRC, GWP and other impacts was observed when single improvement measures were taken in the systems AFRI and AFWI. However, optimised combination of the measures such as reducing N fertilizer rate, deficit irrigation and sprinkle-irrigating can generally decrease impacts for most environmental indicators, except for LU. It is difficult to achieve high alfalfa yield while saving water consumption and also reducing GWP and other environmental indicators in a specific production system. However, increasing average yield in the whole region and decreasing environmental impacts can be achieved to some extent through adjusting the production systems with optimised combination measures. Accordingly, the AFNI production system for the semi-arid area and the AFRI system for the arid area are recommended. The study highlights the importance of considering water and land resources along with assessing other impacts of agriculture products when performing a comparison between farming systems and improvement measures. (c) 2021 Elsevier Ltd. All rights reserved.
英文关键词	Life cycle assessment Environmental impact Water consumption Alfalfa Production system Improvement measure
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000655683900025
WOS关键词	IMPACT ASSESSMENT ; FERTILIZATION ; FOOTPRINT ; SYSTEMS ; YIELD ; FEED
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	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/2XILL650/350763
作者单位	[Wang, Xiaoqin; Tian, Yanqin; Liang, Dongli] Northwest Agr & Forestry Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China; [Ledgard, Stewart; Luo, Jiafa] Ruakura Res Ctr, AgRes, Hamilton 3240, New Zealand; [Chen, Yan] Northwest Agr & Forestry Univ, Coll Econ & Management, Yangling 712100, Shaanxi, Peoples R China; [Wei, Zhibiao; Ma, Lin] Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res, Key Lab Agr Water Resources, Shijiazhuang 050021, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiaoqin,Ledgard, Stewart,Luo, Jiafa,et al. Life cycle assessment of alfalfa production and potential environmental improvement measures in Northwest China[J]. 西北农林科技大学,2021,304.
APA	Wang, Xiaoqin.,Ledgard, Stewart.,Luo, Jiafa.,Chen, Yan.,Tian, Yanqin.,...&Ma, Lin.(2021).Life cycle assessment of alfalfa production and potential environmental improvement measures in Northwest China.JOURNAL OF CLEANER PRODUCTION,304.
MLA	Wang, Xiaoqin,et al."Life cycle assessment of alfalfa production and potential environmental improvement measures in Northwest China".JOURNAL OF CLEANER PRODUCTION 304(2021).