Emergy analysis of a farm biogas project in China: A biophysical   perspective of agricultural ecological engineering

doi:10.1016/j.cnsns.2009.06.001

CORC > 北京大学 > 工学院

	Emergy analysis of a farm biogas project in China: A biophysical perspective of agricultural ecological engineering
	Zhou, S. Y. ; Zhang, B. ; Cai, Z. F.
刊名	communications in nonlinear science and numerical simulation
	2010
关键词	Emergy analysis Agricultural ecological engineering Biogas project RESOURCE ANALYSIS EMBODIED ENERGY EXERGY ANALYSIS PRODUCTION SYSTEMS ETHANOL-PRODUCTION CARRYING-CAPACITY WATER-RESOURCES FLOW-ANALYSIS YELLOW-RIVER 2ND LAW
DOI	10.1016/j.cnsns.2009.06.001
英文摘要	This paper aims to present a biophysical understanding of the agricultural ecological engineering by emergy analysis for a farm biogas project in China as a representative case. Accounting for the resource inputs into and accumulation within the project, as well as the Outputs to the social system, emergy analysis provides an empirical study in the biophysical dimension of the agricultural ecological engineering. Economic benefits and ecological economic benefits of the farm biogas project indicated by market value and emergy monetary value are discussed, respectively. Relative emergy-based indices such as renewability (R%), emergy yield ratio (EYR), environmental load ratio (ELR) and environmental sustainability index (ESI) are calculated to evaluate the environmental load and local sustainability of the concerned biogas project. The results show that the farm biogas project has more reliance on the local renewable resources input, less environmental pressure and higher sustainability compared with other typical agricultural systems. In addition, holistic evaluation and its policy implications for better operation and management of the biogas project are presented. (C) 2009 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000272939800032&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Mathematics, Applied; Mathematics, Interdisciplinary Applications; Mechanics; Physics, Fluids & Plasmas; Physics, Mathematical; SCI(E); EI; 21; ARTICLE; 5; 1408-1418; 15
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154865]
专题	工学院
推荐引用方式 GB/T 7714	Zhou, S. Y.,Zhang, B.,Cai, Z. F.. Emergy analysis of a farm biogas project in China: A biophysical perspective of agricultural ecological engineering[J]. communications in nonlinear science and numerical simulation,2010.
APA	Zhou, S. Y.,Zhang, B.,&Cai, Z. F..(2010).Emergy analysis of a farm biogas project in China: A biophysical perspective of agricultural ecological engineering.communications in nonlinear science and numerical simulation.
MLA	Zhou, S. Y.,et al."Emergy analysis of a farm biogas project in China: A biophysical perspective of agricultural ecological engineering".communications in nonlinear science and numerical simulation (2010).