Carbon footprint and economic efficiency of urban agriculture in Beijing-a comparative case study of conventional and home-delivery agriculture

doi:10.1016/j.jclepro.2019.06.122

	Carbon footprint and economic efficiency of urban agriculture in Beijing-a comparative case study of conventional and home-delivery agriculture
	Hu, Yingjie 2; Zheng, Ji 1,3; Kong, Xiangbin 2; Sun, Jin 2; Li, Yu 1,3
刊名	JOURNAL OF CLEANER PRODUCTION
	2019-10-10
卷号	234 页码:615-625
关键词	Life cycle assessment Carbon footprint Urban agriculture Home-delivery agriculture Conventional smallholder operation Beijing
ISSN号	0959-6526
DOI	10.1016/j.jclepro.2019.06.122
通讯作者	Kong, Xiangbin(kxb@cau.edu.cn)
英文摘要	Within the context of climate change and population growth, the development of urban agriculture is of great environmental and economic significance in rapidly urbanizing China. Based on the primary survey data, this paper evaluated the carbon footprint (CF) and economic efficiency of urban agriculture in Beijing (China) using the life cycle assessment method (from cradle to consumption approach). Two cases were analyzed and compared considering their differences in on-farm cultivation and off-farm supply chains: a conventional small householder farm that sells its vegetables directly to consumers in a local market, and a large home-delivery agriculture (HDA) initiative that delivers its vegetables to the consumers' home directly. Both cases were equipped with greenhouses with plastic covering but no heating system. The CF of the production, transportation and distribution of 1 kg fresh vegetables was estimated at 0.318 kg CO2-eq kg(-1) and 0.624-0.652 kg CO2-eq kg(-1) for conventional and HDA initiative farm, respectively. However, the HDA initiative showed a better environmental performance than the conventional operation when taking economic efficiency into consideration. The CF per unit of profit of HDA initiative (0.093-0.097 kg CO2-eq per CNY) was lower than conventional farm (0.111 kg CO2-eq per CNY). The lower CF per unit of product weight of the conventional farm was largely attributed to the high yield and the lower CF per unit of profit of the HDA initiative was mainly due to the outstanding economic profitability through income optimization. The major hotspots of CF in both cases were greenhouse plastic films in the cultivation phase (from cradle to farm gate) and transportation in the supply chain (from farm gate to consumption). Simulation of a switch to biodiesel instead of gasoline and diesel in combination with the replacement of current fossil-fuel-dominated electricity by hydro-powered electricity resulted in 20.0-21.8% reduction in the total CF. By identifying the CF hotspots of two farm cases, particular inputs and activities can be targeted for adjustment in order to effectively reduce the CF of urban agriculture in Beijing. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	Beijing Municipal Natural Science Foundation[8151001] ; National Natural Science Foundation of China[41771561] ; National Natural Science Foundation of China[41771182]
WOS关键词	LIFE-CYCLE ASSESSMENT ; GREENHOUSE-GAS EMISSIONS ; TOMATO PRODUCTION ; INVENTORY ANALYSIS ; FOOD SYSTEMS ; ENERGY ; SUSTAINABILITY ; PRODUCTS ; CHINA ; CITY
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000483406000054
资助机构	Beijing Municipal Natural Science Foundation ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/69695]
专题	中国科学院地理科学与资源研究所
通讯作者	Kong, Xiangbin
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.China Agr Univ, Coll Land Sci & Technol, Room 5-319,2nd Yuanmingyuan West Rd, Beijing 100193, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hu, Yingjie,Zheng, Ji,Kong, Xiangbin,et al. Carbon footprint and economic efficiency of urban agriculture in Beijing-a comparative case study of conventional and home-delivery agriculture[J]. JOURNAL OF CLEANER PRODUCTION,2019,234:615-625.
APA	Hu, Yingjie,Zheng, Ji,Kong, Xiangbin,Sun, Jin,&Li, Yu.(2019).Carbon footprint and economic efficiency of urban agriculture in Beijing-a comparative case study of conventional and home-delivery agriculture.JOURNAL OF CLEANER PRODUCTION,234,615-625.
MLA	Hu, Yingjie,et al."Carbon footprint and economic efficiency of urban agriculture in Beijing-a comparative case study of conventional and home-delivery agriculture".JOURNAL OF CLEANER PRODUCTION 234(2019):615-625.