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大规模土地收购加剧了坦桑尼亚的当地农田不平等。

Large-scale land acquisitions exacerbate local farmland inequalities in Tanzania.

机构信息

School of Geography, Development, and Environment, University of Arizona, Tucson, AZ 85721.

School for Environment and Sustainability, University of Michigan, Ann Arbor, MI 48109.

出版信息

Proc Natl Acad Sci U S A. 2023 Aug 8;120(32):e2207398120. doi: 10.1073/pnas.2207398120. Epub 2023 Jul 31.

DOI:10.1073/pnas.2207398120
PMID:37523529
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10410758/
Abstract

Land inequality stalls economic development, entrenches poverty, and is associated with environmental degradation. Yet, rigorous assessments of land-use interventions attend to inequality only rarely. A land inequality lens is especially important to understand how recent large-scale land acquisitions (LSLAs) affect smallholder and indigenous communities across as much as 100 million hectares around the world. This paper studies inequalities in land assets, specifically landholdings and farm size, to derive insights into the distributional outcomes of LSLAs. Using a household survey covering four pairs of land acquisition and control sites in Tanzania, we use a quasi-experimental design to characterize changes in land inequality and subsequent impacts on well-being. We find convincing evidence that LSLAs in Tanzania lead to both reduced landholdings and greater farmland inequality among smallholders. Households in proximity to LSLAs are associated with 21.1% ( = 0.02) smaller landholdings while evidence, although insignificant, is suggestive that farm sizes are also declining. Aggregate estimates, however, hide that households in the bottom quartiles of farm size suffer the brunt of landlessness and land loss induced by LSLAs that combine to generate greater farmland inequality. Additional analyses find that land inequality is not offset by improvements in other livelihood dimensions, rather farm size decreases among households near LSLAs are associated with no income improvements, lower wealth, increased poverty, and higher food insecurity. The results demonstrate that without explicit consideration of distributional outcomes, land-use policies can systematically reinforce existing inequalities.

摘要

土地不平等阻碍经济发展,加剧贫困,并与环境恶化有关。然而,对土地利用干预措施的严格评估很少关注不平等问题。了解最近在全球多达 1 亿公顷的土地上进行的大规模土地收购如何影响小农和土著社区,土地不平等视角尤为重要。本文研究土地资产的不平等问题,特别是土地持有和农场规模,以深入了解大规模土地收购的分配结果。我们使用一项涵盖坦桑尼亚四个土地收购和控制地点对的家庭调查,采用准实验设计来描述土地不平等的变化及其对福祉的后续影响。我们有令人信服的证据表明,坦桑尼亚的大规模土地收购导致小农的土地持有量减少和农田不平等加剧。靠近大规模土地收购的家庭的土地持有量减少了 21.1%(=0.02),尽管证据不显著,但表明农场规模也在缩小。然而,总体估计掩盖了一个事实,即处于农场规模四分之一以下的家庭受到大规模土地收购导致的失地和土地损失的冲击最大,这些因素共同导致农田不平等加剧。进一步的分析发现,土地不平等并没有被其他生计维度的改善所抵消,而是靠近大规模土地收购的家庭的农场规模缩小与收入没有改善、财富减少、贫困加剧和粮食不安全程度提高有关。研究结果表明,如果不明确考虑分配结果,土地利用政策可能会系统地加剧现有的不平等。

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本文引用的文献

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