Does Local Politics Drive Tropical Land-Use Change? Property-Level Evidence From the Amazon
利用巴西亚马逊地区地方政治家和竞选捐赠者的土地变化面板数据，研究发现大土地所有者通过政治捐赠影响选举，从而在当选官员任期内增加大豆种植，并导致环境违规增加。
Abstract Land conversion to agriculture is a defining environmental challenge for tropical regions. We construct a novel panel dataset of land-use changes on the properties of municipal politicians and campaign donors in the Brazilian Amazon to assess channels through which local politics may drive land conversion. Estimating event studies around close mayoral elections, we find that large landholders significantly increase soy cultivation while the candidate they donated to is in office. This suggests landholders invest in political influence to overcome barriers to agricultural intensification. In turn, mayors who receive landholder donations govern in favor of agriculture – increasing spending on agricultural promotion and distribution of rural credit. While agricultural promotion ‘returns the favor’ for mayors’ donors, it is not precisely targeted. We document large spillovers onto lands not registered to donors, resulting in increased environmental violations in these areas. Results reveal how patronage and special interests drive land-use change in the Amazon.