雾污染和城市扩张:基于面板同时方程模型的经验分析
1College of Economics and Finance, Xi'an International Studies University, Xi'an, China.
PloS one
|February 29, 2024
概括
在中国,雾污染和城市扩张具有双向的因果关系,PM2.5排放推动了城市扩张,城市扩张恶化了空气质量. 地区差异和城市规模影响了这种关系,需要定制的城市治理策略.
科学领域:
- 环境科学 环境科学
- 城市研究 城市研究
- 经济学 经济学 经济学
背景情况:
- 雾污染,特别是来自PM2.5,是中国的一个重大环境挑战.
- 城市扩张是一个复杂的现象,具有潜在的环境后果.
- 了解污染和城市发展之间的相互作用对于可持续城市至关重要.
研究的目的:
- 调查中国城市雾污染和城市扩张之间的双向因果关系.
- 分析不同地区和城市大小之间的这种关系的异质性.
- 为城市治理和环境管理提供基于证据的建议.
主要方法:
- 从2002年到2018年,利用了227个中国城市的面板数据.
- 使用一个面板链接方程模型来评估因果关系.
- 包含一个空气流量系数仪表变量来加强发现.
- 根据地理区域和城市大小进行异质性分析.
主要成果:
- 证实了雾污染 (PM2.5) 和城市扩张之间的双向正因关系.
- 雾污染对城市扩张有积极的影响,城市扩张加剧了雾污染.
- 区域分析显示,东部地区有显著的负面影响,西部没有显著的影响,中部和东北部地区有积极影响.
- 根据城市规模的分析表明,大型,中型和小型城市之间存在双向的积极关系,影响程度各不相同.
结论:
- 雾污染和城市扩张交织在一起,在中国城市创造了一个反循环.
- 有效的城市治理需要本地化战略,减少能源的技术创新和大数据的利用.
- 解决雾污染和管理城市扩张需要采用针对区域和城市特定环境的综合政策方法.
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