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管理城市发展可以将中国的污染减少一半
Ouping Deng1,2, Sitong Wang1,3, Jiangyou Ran2
1College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
Nature communications
|January 9, 2024
概括
中国的城市管理发展可以在2050年之前将污染减少一半. 这一战略减少了大气排放和流向水体的排放,为经济带来了显著的好处,并支持了可持续发展目标.
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 可持续发展 可持续发展 可持续发展
背景情况:
- 污染对实现可持续发展目标 (SDGs) 构成重大挑战.
- 减少来自不同来源的污染需要创新的战略.
- 城市化为减少污染提供了一个复杂但潜在有效的途径.
研究的目的:
- 调查中国城市管理发展的潜力,到2050年减少反应性 (Nr) 污染.
- 量化城市化对大气排放 (NH3,NOx,N2O) 和水污染的影响.
- 评估实施这种战略的经济可行性和好处.
主要方法:
- 模拟农村-城市迁移对点源和非点源污染的影响.
- 分析土地整合和牲畜搬迁对污染的影响.
- 计算废物处理和农业实践投资的成本和收益.
主要成果:
- 通过城市管理开发,到2050年,可减少约50%的活性污染.
- 大气中NH3,NOx和N2O的排放量预计将分别减少44%,30%和33%.
- 据估计,对水体的排放量将减少53%,从610亿美元的投资中获得2450亿美元的总体经济效益.
结论:
- 中国的管理型城市化提供了一种可行且具有成本效益的方法,可以显著减少污染.
- 该战略有助于实现多个可持续发展目标,包括减少贫困,粮食安全,清洁水,负责任的消费和气候行动.
- 城市发展可以通过优化土地利用和农业实践,同时解决改善空气和水质的问题.
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