Greenhouse gas emissions and efficiency in French sheep meat farming: A non-parametric framework of pollution-adjusted technologies
研究了1987-2013年法国草场羊肉养殖场的温室气体排放调整效率，发现调整污染投入组合可抵消超35%的低效率，并计算了不同温室气体的影子价格，为政策制定提供参考。
Our paper evaluates the efficiency adjusted for greenhouse gas (GHG) emissions for sheep meat breeding farms in French grassland areas during 1987–2013. The results show that by modifying the mix of polluting inputs farmers could, on average, offset more than 35% of their total inefficiency. The computation of shadow prices with an innovative approach reveals that, while prices for carbon dioxide and methane range within acceptable levels, the price of nitrous oxide is exorbitant. This suggests that, if policy-makers intend to encourage farmers to reduce this type of pollution, policy measures should be accompanied by sufficient subsidies to compensate farmers or other incentives aiming at nitrous oxide reduction.