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新城市化对水污染物排放的非线性影响:基于面板值模型的经验分析
Qianwen Yu1, Zehao Sun1, Junyuan Shen2
1Business School, Suzhou University of Science and Technology, Suzhou, 215009, China.
Journal of environmental management
|July 8, 2023
概括
中国的新型城市化对化学氧气需求 (COD) 排放产生了双重值效应. 虽然人口和空间城市化最终会减少COD,但经济和整体新城市化水平最初会增加COD,突出区域差异.
科学领域:
- 环境科学与政策 环境科学与政策
- 城市规划与可持续发展
- 区域经济学 区域经济学
背景情况:
- 快速的城市化增加了水消耗和废水排放,给可持续发展带来了挑战.
- 中国的地区发展不均,需要采取多方面的方法来了解城市化对水污染的影响.
- 现有的研究往往只关注人口城市化,忽视其他关键方面.
研究的目的:
- 开发一个全面的指数系统来评估中国的新城市化水平.
- 通过使用面板值回归模型,研究新型城市化和水污染排放之间的非线性关系.
- 分析新城市化速度的区域差异及其对水污染排放的影响.
主要方法:
- 为新城市化水平 (NUBL) 开发一个全面的评估指数系统.
- 将面板值回归模型 (PTRM) 应用于来自中国30个省级地区 (2006-2020) 的数据.
- 对NUBL及其子系统 (人口,经济,空间,社会,生态) 对化学氧需求 (COD) 排放的值影响的分析.
主要成果:
- NUBL及其人口,经济和空间子系统对COD排放产生双重值效应.
- 经济和整体NUBL最初促进COD排放,而人口和空间城市化最终抑制它们的门后.
- 社会和生态城市化不断促进COD排放,没有值效应;城市化速度和污染水平存在显著的区域差异.
结论:
- 新城市化对水污染的影响是复杂的,非线性,在不同城市化尺寸和地区有所不同.
- 中国东部在城市化方面处于领先地位,而中部和西部地区面临着高污染或低发展水平的挑战.
- 需要有针对性的政策来平衡城市化与控制水污染,优先考虑西部的经济发展和管理高排放地区.
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