Econ Papers Daily / 期刊论文
土地登记与冲突减少：来自巴西亚马逊地区的证据
Land registration and conflict reduction: Evidence from the Brazilian Amazon
摘要
Environmental land registries are increasingly used to support forest governance, yet their potential contribution to reducing rural land conflict remains poorly understood. Brazil’s Cadastro Ambiental Rural (CAR) requires landholders to self-declare property boundaries and land use for environmental compliance but neither confers legal title nor resolves competing land claims. Before becoming mandatory under Brazil’s 2012 Forest Code, the CAR was piloted in the Amazonian state of Pará beginning in 2008. We exploit this early implementation to examine whether an environmental land registry can reduce rural violence in frontier regions characterized by weak property rights and limited state capacity. Using municipality-level panel data (2001–2012) and a synthetic difference-in-differences design, we estimate that early CAR implementation reduced land conflict events by 11.5%, families affected by conflict by 33.4%, and land-related death threats by 10.0%. Murders and attempted murders are too rare for the design to detect effects of plausible magnitude. The estimated reductions are not uniform across outcomes or institutional environments. Death threats decline consistently across all estimation samples, whereas reductions in conflict events and families affected are concentrated in municipalities with complementary governance programs and stronger pre-treatment enforcement capacity. These findings are consistent with environmental registration operating through complementary informational and institutional channels. Documenting land occupation appears sufficient to discourage lower-intensity forms of conflict, while larger reductions in realized conflict require institutions capable of acting on the information the registry provides. More broadly, the results suggest that information-based land administration can improve land governance before formal property rights are resolved.
中文摘要
环境土地登记日益被用于支持森林治理，但其在减少农村土地冲突方面的潜在贡献仍鲜为人知。巴西的农村环境登记系统（Cadastro Ambiental Rural, CAR）要求土地所有者自行申报财产边界和土地利用情况以满足环境合规要求，但既不授予合法产权，也不解决相互竞争的土地主张。在2012年《巴西森林法典》将其设为强制要求之前，CAR自2008年起在亚马孙地区的帕拉州进行了试点。我们利用这一早期实施来考察环境土地登记能否减少以产权薄弱和国家能力有限为特征的边疆地区的农村暴力。使用市级面板数据（2001—2012年）和合成双重差分设计，我们估计早期CAR实施使土地冲突事件减少了11.5%，受冲突影响的家庭减少了33.4%，与土地相关的死亡威胁减少了10.0%。谋杀和谋杀未遂过于罕见，该设计无法检测出合理量级的效应。估计的减少在不同结果或制度环境下并不一致。死亡威胁在所有估计样本中均持续下降，而冲突事件和受影响家庭的减少则集中在具有配套治理项目和更强预处理执法能力的市镇。这些发现与环境登记通过互补的信息和制度渠道发挥作用相一致。记录土地占用似乎足以遏制较低强度的冲突形式，而要实现已发生冲突的更大幅度减少，则需要有能力对登记系统所提供信息采取行动的机构。更广泛地说，结果表明，基于信息的土地管理可以在正式产权得到解决之前改善土地治理。