Chinese Agricultural Science Bulletin ›› 2009, Vol. 25 ›› Issue (9): 251-257.
Special Issue: 现代农业发展与乡村振兴; 畜牧兽医; 农业生态
• 农业资源与环境科学 • Previous Articles Next Articles
Hu YanXia, Li Hong, Wang Yu, Yan Maochao, Ren Wantao, Zhou Liandi
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Abstract: Cycling agriculture plays important role in modern agricultural development for the energy crisis and environment pollution.In this article we take the big hoggery-biogas eco-economy system in Nanhanji village, Zhoukoudian town,Fangshan district for a case study, and using the method of energy, emergy and modern economy assessment, the eco-economy system is comprehensively Evaluated. The quantitatively analysis and evaluation result will offer scientific basis for the further development of Beijing cycling agriculture. The result showed that ① from energy point, after cycling, the total energy output efficiency is 1.77 and the total energy input economy efficiency is 87%, greatly increased than the single subsystem.②from emergy point, after cycling, the net emergy yield ratio is 38.04, less than the sub-hoggery system and make the sub-biogas system from negative to positive. This proved that cycling benefits of the agricultural system increased greatly.③from economy point, after cycling, the FIRR(Financial Internal Rate of Return)is 26.8%, more than ic(10%),and the FNPV(Financial Net Present Value) is 261.0wanyuan,this is >0, simultaneity the Pt(Investment return term)is 3nian,all this showed that the economy benefit of the cycling eco-economy system is feasible and continuable.
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Hu YanXia, Li Hong, Wang Yu, Yan Maochao, Ren Wantao, Zhou Liandi. Comprehensive Evaluation on the Multi-output Cycling Agriculture in Beijing Suburb[J]. Chinese Agricultural Science Bulletin, 2009, 25(9): 251-257.
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https://www.casb.org.cn/EN/Y2009/V25/I9/251