Pickson Robert Becker, Boateng Elliot, Gui Peng, Chen Ai
Gongqing Institute of Science and Technology, Jiujiang, China.
Department of Economics, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
Environ Dev Sustain. 2023 May 27:1-28. doi: 10.1007/s10668-023-03391-x.
Climate change is a confounding factor that affects food security in several ways. Although the analyses of earlier studies in this area were largely non-technical, new analytical techniques have been developed to comprehensively evaluate climate change patterns and their implications for food security. In this study, we use recent developments in panel econometrics, which consider cross-sectional dependence and parameter heterogeneity, to examine the effects of climatic conditions on cereal farming in Africa from 1970Q1 to 2017Q4. The results show that rainfall positively affects cereal crops, although average temperatures are typically unfavourable. In the country-specific scenarios, we observed significant variations in the influence of climatic conditions on cereal production. The causality test results show a two-way causal relationship between climatic conditions-rainfall and temperature-and cereal production. It is suggested that African governments and non-governmental organisations support farmers' adaptation to climate change by implementing policies that prioritise farmers' capacity building and ensure that extension service officers engage with farmers intensively.
气候变化是一个复杂因素,它在多个方面影响粮食安全。尽管该领域早期研究的分析大多不具技术性,但已开发出新的分析技术来全面评估气候变化模式及其对粮食安全的影响。在本研究中,我们运用面板计量经济学的最新进展,该方法考虑了横截面依赖性和参数异质性,以检验1970年第一季度至2017年第四季度气候条件对非洲谷物种植的影响。结果表明,降雨对谷物作物有积极影响,尽管平均气温通常不利。在特定国家的情景中,我们观察到气候条件对谷物生产的影响存在显著差异。因果关系检验结果表明,气候条件(降雨和温度)与谷物生产之间存在双向因果关系。建议非洲各国政府和非政府组织通过实施优先考虑农民能力建设的政策,并确保推广服务人员与农民密切接触,来支持农民适应气候变化。