从多维视角探索中国和美国粮食安全的进化特征
Chang Tang1,2, Xiaoliang Xie1,2, Guo Wei3
1School of Science, Hunan University of Technology and Business, Changsha 410205, China.
Foods (Basel, Switzerland)
|July 27, 2024
概括
全球粮食安全面临着气候变化和冲突带来的挑战. 这项研究比较了中国和美国,发现了中国.
科学领域:
- 农业经济学 农业经济学
- 全球粮食安全研究研究
- 环境政策 环境政策
背景情况:
- 全球粮食安全受到气候变化,地区冲突,脱全球化和疾病爆发的威胁.
- 对中国和美国的比较分析为全球粮食安全政策和治理提供了见解.
- 粮食安全正在不断发展,包括数量,质量,流通,经济,生态和政策方面.
研究的目的:
- 构建一个全面的粮食安全评估指标系统.
- 评估和比较中国和美国2000-2022年间的粮食安全状况.
- 确定阻碍两国粮食安全的关键因素.
主要方法:
- 开发了一个粮食安全评估系统,包含六个维度的29个指标.
- 在状态评估中应用了CRITIC-MEREC-MARCOS模型.
- 利用障碍程度模型 (ODM) 来识别阻碍因素.
主要成果:
- 中国的粮食安全显示出波动但稳定的上升趋势,缩小了与美国的差距.
- 两国之间在经济,生态资源和政策安全方面仍然存在重大差异.
- 中国面临农业劳动生产率,资源稀缺和投入使用效率低下的限制,经济和环境限制日益增加.
- 美国的粮食安全越来越受到循环安全 (粮食出口) 和生态资源安全 (干旱) 的影响.
结论:
- 中国和美国在粮食安全方面表现出不同的挑战和进步.
- 经济和生态因素越来越限制了中国的粮食安全.
- 循环和生态因素对美国的粮食安全构成越来越大的障碍.
- 中国和美国之间的国际合作对于解决全球粮食安全和可持续发展至关重要.
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