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首页> 美国卫生研究院文献>Scientific Reports >Increasing impact of urban fine particles (PM2.5) on areas surrounding Chinese cities
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Increasing impact of urban fine particles (PM2.5) on areas surrounding Chinese cities

机译：城市细颗粒物（PM2.5）对中国城市周边地区的影响越来越大

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The negative impacts of rapid urbanization in developing countries have led to a deterioration in urban air quality, which brings increasing negative impact to its surrounding areas (e.g. in China). However, to date there has been rare quantitative estimation of the urban air pollution to its surrounding areas in China.We thus evaluated the impact of air pollution on the surrounding environment under rapid urbanization in Chinese prefectures during 1999 – 2011. We found that: (1) the urban environment generated increasing negative impact on the surrounding areas, and the PM2.5 concentration difference between urban and rural areas was particularly high in large cities. (2) Nearly half of the Chinese prefectures (156 out of 350) showed increased impact of urban PM2.5 pollution on its surrounding areas. Those prefectures were mainly located along two belts: one from northeast China to Sichuan province, the other from Shanghai to Guangxi province. Our study demonstrates the deterioration in urban air quality and its potential impacts on its surrounding areas in China. We hope that the results presented here will encourage different approaches to urbanization to mitigate the negative impact caused by urban air pollution, both in China and other rapidly developing countries.
机译：发展中国家的快速城市化带来的负面影响导致城市空气质量恶化，这给周边地区（例如中国）带来越来越多的负面影响。但是，迄今为止，中国对周边地区的城市空气污染进行定量评估的情况很少。因此，我们评估了1999-2011年中国各州在快速城市化过程中空气污染对周围环境的影响。我们发现：（ 1）城市环境对周边地区的负面影响越来越大，大城市的城乡PM2.5浓度差异特别大。 （2）中国将近一半的州（350个州中的156个）表明城市PM2.5污染对其周围地区的影响增加。这些县主要分布在两条带上：一条从中国东北到四川省，另一条从上海到广西省。我们的研究表明，城市空气质量的恶化及其对中国周边地区的潜在影响。我们希望，这里提出的结果将鼓励采取不同的城市化方法，以减轻中国和其他快速发展中国家因城市空气污染而造成的负面影响。

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