city-specific vehicle emission control strategies to achieve stringent emission reduction targets in china's yangtze river delta region.the yangtze river delta (yrd) region is one of the most prosperous and densely populated regions in china and is facing tremendous pressure to mitigate vehicle emissions and improve air quality. our assessment has revealed that mitigating vehicle emissions of nox would be more difficult than reducing the emissions of other major vehicular pollutants (e.g., co, hc and pm2.5) in the yrd region. even in shanghai, where the emission control implemented are more stringent than in jiangsu and zhejiang ...201728115153
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