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尼日利亚城市化与家庭粮食安全之间的关联
Joseph B Ajefu1,2, Michael Henry3, Sabastine U Ugbaje4
1Department of Peace Studies and International Development, University of Bradford, Bradford, West Yorkshire, UK.
Maternal & child nutrition
|May 30, 2025
概括
通过卫星测量夜间光强度的城市化,对尼日利亚的家庭粮食安全产生了积极的影响. 然而,这种关系是非线性的,较高的光强度显示出对粮食安全的复杂影响.
科学领域:
- 环境科学 环境科学
- 农业经济学 农业经济学
- 公共卫生 公共卫生
背景情况:
- 城市化往往导致饮食转向更昂贵的食物.
- 之前的研究使用了城市化有限的二进制指标.
- 评估城市化对粮食安全的影响需要细微的测量.
研究的目的:
- 研究尼日利亚不同程度的城市化与家庭粮食安全之间的关系.
- 利用基于卫星的夜间光强度作为城市化的持续代理.
- 探索城市化与粮食安全之间的非线性动态.
主要方法:
- 采用基于卫星的夜间光强度数据 (美国空军国防气象卫星计划) 作为城市化的代理.
- 分析了尼日利亚夜间光线强度与家庭粮食安全之间的关联.
- 通过使用夜间光强度的高多项式来研究非线性关系.
主要成果:
- 夜间的光强度与家庭的粮食安全有积极的关联.
- 在城市化 (夜光强度) 和家庭粮食安全之间观察到非线性关系.
- 更高的多项式术语表明了超出简单线性趋势的复杂相互作用.
结论:
- 卫星导出的夜间光强度为城市化提供了一致和客观的衡量标准.
- 城市化,以夜间光线来衡量,与尼日利亚家庭粮食安全的改善有关.
- 调查结果表明,由于城市化-粮食安全动态,可能会对母亲和儿童的福祉产生潜在影响.
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