摘要: Life cycle analysis (LCA) is a method of quantifying the environmental impacts associated with given product. In LCA, researchers create an inventory resources used and pollutants generated in product production use. From this impact assessment estimates product's ultimate effects on human health, ecosystem function, natural resource depletion. Standardization LCA methods has sought to maintain flexibility while ensuring consistency clarity reporting. been applied various biofuels, including corn ethanol, estimate net biofuel petroleum use, climate change, air water quality, other categories.