Air pollutant emissions induced by rural-to-urban migration during China's urbanization (2005-2015).

Environ Sci Ecotechnol · 2022 · PMC9488084 · PMID 36159731

Europe PMC DOI

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an increasing trendno p-value reported

However, hukou migration has shown an increasing trend in recent years (see Fig.

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a decreasing trendno p-value reported

Urban air pollutant emissions have shown a decreasing trend in recent years, especially for SO 2 and primary PM 2.5 .

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.