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非洲木薯生产:驱动因素与趋势的面板分析

Cassava production in africa: A panel analysis of the drivers and trends.

作者信息

Adebayo Waidi Gbenro

机构信息

Department of Philosophy, Politics and Economics, Witten/Herdecke University, Witten, Germany.

出版信息

Heliyon. 2023 Sep 7;9(9):e19939. doi: 10.1016/j.heliyon.2023.e19939. eCollection 2023 Sep.

Abstract

Cassava is Africa's most important tuberous crop. It is an all-year-round cheap and reliable staple food for millions of Africans, making it vital for food security on the continent. However, cassava production in Africa is hindered by a persistent problem of low yield per hectare. This study addresses the dearth of research on the specific influences of area harvested and yield per hectare on cassava production in Africa. This work uses panel data from 37 African countries from 1961 to 2020 and sheds light on three key aspects. Firstly, it investigates the extent and nature of the low yield per hectare problem, offering insights into its underlying causes and implications. Secondly, it examines the interplay between area harvested and yield per hectare, revealing the factors driving the observed trends in cassava yields on the continent. Lastly, this study contributes to the achievement of Sustainable Development Goals, particularly Goal 15: Life on Land and Goal 2: Zero Hunger, by providing valuable information to enhance cassava production sustainability. The findings indicate that approximately 95.6% of the variability in production can be explained by changes in the area harvested, around 1.1% by yield variability, about 27.6% by consumer price index and 1.8% by temperature changes. Notably, the study observes a significant increase in the area harvested by 16.8 million hectares and average yield levels varied between 5.7 and 9.6 tonnes per hectare. The analysis also reveals a disparity in translating gains from disease eradication and introducing high-yield, disease-resistant varieties into smallholder cassava farming. In conclusion, the study highlights the potential for sustainable intensification of cassava production as a viable pathway to enhance absolute and per-hectare yields while promoting farmers' income and mitigating cassava cultivation-related deforestation. Understanding and addressing the low yield per hectare problem in cassava production are crucial steps toward ensuring food security and achieving sustainable agricultural practices in Africa.

摘要

木薯是非洲最重要的块根作物。它是数百万非洲人全年都能获取的廉价且可靠的主食,对非洲大陆的粮食安全至关重要。然而,非洲的木薯生产受到每公顷产量持续偏低这一问题的阻碍。本研究解决了关于收获面积和每公顷产量对非洲木薯生产的具体影响方面研究匮乏的问题。这项工作使用了1961年至2020年37个非洲国家的面板数据,并阐明了三个关键方面。首先,它调查了每公顷产量低的问题的程度和性质,深入了解其潜在原因和影响。其次,它研究了收获面积和每公顷产量之间的相互作用,揭示了推动非洲大陆木薯产量观察趋势的因素。最后,本研究通过提供有价值的信息以增强木薯生产的可持续性,为实现可持续发展目标,特别是目标15:陆地生物和目标2:零饥饿做出了贡献。研究结果表明,产量变化中约95.6%可由收获面积的变化来解释,1.1%可由产量变化来解释,27.6%可由消费价格指数来解释,1.8%可由温度变化来解释。值得注意的是,该研究观察到收获面积显著增加了1680万公顷,平均产量水平在每公顷5.7至9.6吨之间。分析还揭示了在消除疾病和引入高产抗病品种给小农户木薯种植带来收益转化方面存在差异。总之,该研究强调了木薯生产可持续集约化的潜力,这是提高绝对产量和每公顷产量、增加农民收入并减轻与木薯种植相关的森林砍伐的可行途径。了解并解决木薯生产中每公顷产量低的问题是确保非洲粮食安全和实现可持续农业实践的关键步骤。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09c0/10559345/36e3dec5f2cc/gr1.jpg

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