莫桑比克农村棉花经济扩张和政策对贫困的影响:一种全经济的方法

Food Laws Pub Date : 1900-01-01 DOI:10.2139/ssrn.3305085
Rui Benfica, C. Arndt, D. Tschirley, D. Boughton
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摘要

本文以莫桑比克赞比西河流域棉花特许分区域为研究对象,采用社会会计矩阵(SAM)校准的区域可计算一般均衡(CGE)模型,考察了承包制农业特定资本扩张、技术改进、世界价格变化和政府政策等外生冲击对种植户和非种植户家庭群体收入贫困水平的影响和相对变化。模拟结果表明,生产率的提高具有广泛的收入增长和减贫潜力,甚至大于棉花世界价格的上涨;由于全球价格不太可能持续上涨,这一结果令人鼓舞。虽然与烟草种植区相比,这些经济体的就业联系相对较弱,但非种植户家庭的收入多样化战略,特别是通过非农业自营职业和粮食作物销售,确保在干预措施侧重于棉花种植者时,他们不会被落在后面。即使对棉花种植者的影响有限,棉花产量的任何扩大也会对非棉花种植者产生一些积极影响。以提高棉花生产力为重点的干预措施的潜在潜力为特许经营公司和决策者提供了一个很好的机会,可以设计对种植农民、公司和广大人口都有利的战略。这将需要公私协调努力,强调更好的研究和推广,使用高产种子品种,并强调质量。虽然研究结果表明投入的高进口价格的负面影响有限,但大力鼓励采取旨在降低进口和运输成本的措施,因为它们可以帮助尽量减少或抵消国内代理人无法控制的因素的任何负面影响。虽然目前棉花种植对贫困的影响相对较小,但在生产力更高的制度下,有很大的潜力取得广泛的重大收益。
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Poverty Effects of Expansion and Policies in Cotton Economies in Rural Mozambique: An Economy-wide Approach
This paper uses a Regional Computable General Equilibrium (CGE) model calibrated with a Social Accounting Matrix (SAM) for the Mozambique Zambezi Valley cotton concession sub-region to examine the economy-wide impacts and relative changes in the levels of income poverty of grower and non-grower household groups, following exogenous shocks, such as contract faming specific capital expansion, technology improvements, changes in world prices, and Government policies. Simulation results indicate that productivity gains have a broad-based income growth and poverty reduction potential, even greater than increased cotton world prices; because sustained increases in world prices are unlikely, this result is encouraging. While employment linkages are relatively weak in these economies when compared to tobacco growing areas, income diversification strategies by non-grower households, particularly through non-farm selfemployment and food crop marketing, ensure that they are not left behind when interventions are focused on cotton growers. Even when impacts are limited among growers, any expansion in cotton production results in some positive effects to nongrowers. The implied potential of interventions focused on increasing cotton productivity present a great opportunity for concession firms and policy makers to design strategies that are beneficial to both grower farmers, firms and the population at large. This will require public-private coordination efforts stressing better research and extension, the use of high yielding seed varieties, and emphasis on quality. Although results indicate limited negative effects of high import prices for inputs, measures aimed at reducing the costs of importation and transportation are highly encouraged as they can help minimize or counterbalance any negative effects from factors outside the control of domestic agents. While current poverty impacts of cotton cropping are relatively small, there is high potential for significant broad based gains under a more productive system.
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