Economic Insights Required for Using Lifecycle Analysis for Policy Decisions

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英文文献：Economic Insights Required for Using Lifecycle Analysis for Policy Decisions
英文文献作者：Klotz, Richard,Bento, Antonio M.,Landry, Joel R.
英文文献摘要：
We develop an analytic and numerical model that integrates land, food and fuel markets and is linked with a sectoral emissions model to examine how the amount of biofuel in the economy impacts the lifecycle emissions of a biofuel under different policies. Our central finding is that the change in GHG emissions due to a unit expansion in biofuel will vary dramatically in the amount of biofuel in the economy and with the policy driving the expansion. The emissions from a unit expansion in corn ethanol due to a blend mandate fall from 12 gCO2e/MJ to 3 gCO2e/MJ, as the quantity of ethanol in the economy increases from 6 to 15 billion gallons. For an input subsidy, emissions due to a unit of ethanol increase from 15 gCO2e/MJ to 26 gCO2e/MJ over the same increase in ethanol. We discuss the implications of these results for lifecycle analysis.

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