运用能值分析方法对山东省淄博市畜禽养殖场沼气工程和秸秆发酵沼气工程的投入和产出进行了计算和分析,结果显示:畜禽养殖场沼气工程的生态经济价值为2.38×105(＄)/a,秸秆沼气工程为4.07×105(＄)/a,两种沼气工程均具有很高的生态经济价值.通过能值指标综合对比,评价了淄博市两类沼气工程的效益和可持续发展能力,对比结果表明:畜禽养殖场沼气工程购入能值比率、能值投资率为秸秆沼气工程的0.3倍和0.17倍,自然能值与购人能值比、能值产出率和能值自给率分别是秸秆沼气工程的5.78倍、1.77倍和1.7倍:废弃物处理率是秸秆沼气工程的1.7倍,环境负荷率为秸秆沼气工程的0.2倍;能值反馈率是秸秆沼气工程的52倍,可更新率是秸秆沼气工程的1.44倍,可持续发展指标是秸秆沼气工程的9.25倍.%There are mainly two types of large and medium-scale biogas plants in Zibo of Shandong province: one is biogas plant in livestock and poultry farms and the other is stalk biogas plant. In this paper, the inputs and outputs of the two kinds of biogas plants in this city are analyzed by applying energy analysis method. The results show that the ecological economic benefits are 2.38×105 $/a in biogas plant in livestock and poultry farms and 4.07×105 $/a in stalk biogas plant, respectively. The ecological economic benefits of the two kinds of biogas plant are both very high. The efficiency and sustainable development capability of the two kinds of biogas plant are evaluated by integrated comparative indices.Comparison results show that purchase energy ratio and energy investment ratio of biogas plant in livestock and poultry farms is 0.3 times and 0.17 times of the stalk biogas plant, the ratio of the natural energy to purchase energy, the energy yield ratio and energy self-sufficiency ratio is 5.78 times, 1.77 times and 1.7 times of the stalk biogas plant, respectively. The waste treatment ratio of biogas plant in livestock and poultry farms is 1.7 times of the stalk biogas plant while the environmental load ratio is 0.2 times. The renewable index and the environmental sustainability index of biogas plant in livestock and poultry farms are 1.44 times and 9.25 times, respectively.
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