减少和封存碳是否与中国农村的粮食安全相冲突? - - 什么,为什么以及如何?
Dequan Hao1, Ruifan Xu1, Bopei Du2
1College of Economics and Management, Northwest A&F University, Yangling 712100, China.
The Science of the total environment
|July 7, 2024
概括
农业碳减排和封存 (CRS) 在短期内对粮食安全产生负面影响,但在长期内产生积极影响. 财政去中心化改变了这些效应,在中国观察到区域差异.
科学领域:
- 农业经济学 农业经济学
- 环境科学 环境科学
- 食品安全研究 食品安全研究
背景情况:
- 中国的农业部门面临着日益增长的碳排放以及日益增长的碳汇.
- 粮食安全是通过数量,质量,生态和经济层面来评估的.
- 了解农业碳管理与粮食安全之间的相互作用至关重要.
研究的目的:
- 分析农业碳减排和封存 (CRS) 对中国农村地区粮食安全的影响.
- 调查财政去中心化在CRS与粮食安全关系中的温和作用.
- 检查这些影响的区域异质性.
主要方法:
- 碳减排和封存 (CRS) 模型用于农业排放和沉积点的应用.
- 建立一个全面的粮食安全评估系统.
- 使用面板数据 (1997-2020) 的空间德宾模型进行实证分析.
主要成果:
- 从1997年到2020年,碳排放增加了13.14%,而碳汇增长了46.43%.
- CRS显示下降趋势 (0.98至0.90),而粮食安全增加 (0.12至0.32).
- 短期CRS对粮食安全产生了负面影响;长期CRS对粮食安全产生了积极影响. 财政去中心化缓解了这些影响,带来了区域差异.
结论:
- 农业CRS对粮食安全有双重影响,短期负面,长期积极.
- 财政去中心化影响了CRS-粮食安全联系,区域差异很大.
- 政策干预应考虑时间动态和区域特点,以有效管理粮食安全.
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