Regional Price Effects of Extreme Weather Events and Wheat Export Controls in Russia and Ukraine
基于价格传导框架，研究了俄罗斯和乌克兰小麦出口管制对国内区域价格的影响，发现俄罗斯2010/11年出口禁令导致价格下降高达67%，且区域差异显著，而乌克兰的区域差异较小。
Abstract We build on the price transmission framework to identify domestic wheat price effects of wheat export controls. We explicitly take into account that a harvest failure causes domestic price effects. Moreover, the analysis at the regional level provides further evidence of the functioning of export controls in a large country. Results suggest a pronounced regional heterogeneity in the strength of domestic price effects of the 2010/11 export ban in Russia. The wheat price dampening effects amount to up to 67% and are strongest in the major wheat exporting region with direct access to the world market. This effect is transmitted to other regions by increased and reversed interregional trade flows. In contrast, we find that regional variation of export controls’ domestic price effects in Ukraine is rather small.