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印度农村的市场势力与空间竞争

Market Power and Spatial Competition in Rural India
Quarterly Journal of Economics · 2023 · Shoumitro Chatterjee

中文摘要

中间商的市场势力是导致印度农民收入偏低的原因之一。我通过聚焦一项限制农民只能将商品出售给本邦中间商的法律,研究了中间商之间的空间竞争在决定印度农民所获价格中的作用。我表明,该法律所产生的市场势力不连续性会转化为价格的不连续性。空间竞争增加一个标准差,农民所获价格便提高6.4%。我提出并估计了一个关于议价与贸易的定量空间模型,以阐明其空间与总体含义。结构模型的估计结果表明,取消印度的跨邦贸易限制将增加中间商之间的竞争。由此,农民的平均价格及其产出将分别至少提高11%和7%。全国作物产出的价值将至少提高18%。然而,这也带来了分配上的后果,因为部分农民会因本地生产增加而受损。

Abstract

Abstract Market power of intermediaries contributes to the low incomes of farmers in India. I study the role of spatial competition between intermediaries in determining the prices that farmers receive in India by focusing on a law that restricts farmers to selling their goods to intermediaries in their own state. I show that the discontinuities in market power generated by the law translate into discontinuities in prices. Increasing spatial competition by one standard deviation causes prices received by farmers to increase by 6.4%. I propose and estimate a quantitative spatial model of bargaining and trade to shed light on spatial and aggregate implications. Estimates from the structural model suggest that removing the interstate trade restriction in India would increase competition between intermediaries. Thereby average farmer prices and their output would increase by at least 11% and 7%, respectively. The value of the national crop output would increase by at least 18%. However, there are distributional consequences as well, as some farmers stand to lose due to increased local production.
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