LOCAL FOOD, URBANIZATION, AND TRANSPORT‐RELATED GREENHOUSE GAS EMISSIONS
研究认为，即使生产技术相同，购买本地食品也不一定减少交通温室气体排放，通过模型发现将部分食品生产放在城市化最低的地区可能更优。
ABSTRACT We argue that “buying local” does not necessarily reduce transport‐related greenhouse gas emissions, even if production technologies and yields are homogeneous in space. We develop a partial‐equilibrium model of rural‐urban systems where the spatial distribution of food production within and between regions is endogenous. We exhibit cases where locating some food production in the least‐urbanized regions results in lower emissions and higher welfare than if all regions are self‐sufficient. The optimal spatial allocation of food production does not exclude the possibility that some regions should be self‐sufficient, provided that their urban population sizes are neither too large nor too small.