Blog
About

  • Record: found
  • Abstract: found
  • Article: not found
Is Open Access

Trends in China's anthropogenic emissions since 2010 as the consequence of clean air actions

Read this article at

ScienceOpenPublisher
Bookmark
      There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

      Abstract

      <p><strong>Abstract.</strong> To tackle the problem of severe air pollution, China has implemented active clean air policies in recent years. As a consequence, the emissions of major air pollutants have decreased and the air quality has substantially improved. Here, we quantified China's anthropogenic emission trends from 2010&amp;ndash;2017 and identified the major driving forces of these trends by using a combination of bottom-up emission inventory and Index Decomposition Analysis (IDA) approaches. The relative change rates of China's anthropogenic emissions during 2010&amp;ndash;2017 are estimated as follows: &amp;minus;62<span class="thinspace"></span>% for SO<sub>2</sub>, &amp;minus;17<span class="thinspace"></span>% for NO<sub>x</sub>, &amp;plus;11<span class="thinspace"></span>% for NMVOC, &amp;plus;1<span class="thinspace"></span>% for NH<sub>3</sub>, &amp;minus;27<span class="thinspace"></span>% for CO, &amp;minus;38<span class="thinspace"></span>% for PM<sub>10</sub>, &amp;minus;35<span class="thinspace"></span>% for PM<sub>2.5</sub>, &amp;minus;27<span class="thinspace"></span>% for BC, &amp;minus;35<span class="thinspace"></span>% for OC, and &amp;plus;18<span class="thinspace"></span>% for CO<sub>2</sub>. The IDA results suggest that emission control measures are the main drivers of this reduction, in which the pollution controls on power plants and industries are the most effective mitigation measures. The emission reduction rates markedly accelerated after the year 2013, confirming the effectiveness of China's Clean Air Action that was implemented in 2013. We estimated that during 2013&amp;ndash;2017, China's anthropogenic emissions decreased by 59<span class="thinspace"></span>% for SO<sub>2</sub>, 21<span class="thinspace"></span>% for NO<sub>x</sub>, 23<span class="thinspace"></span>% for CO, 36<span class="thinspace"></span>% for PM<sub>10</sub>, 33<span class="thinspace"></span>% for PM<sub>2.5</sub>, 28<span class="thinspace"></span>% for BC, and 32<span class="thinspace"></span>% for OC. NMVOC emissions increased by 11<span class="thinspace"></span>% and NH<sub>3</sub> emissions remained stable from 2010&amp;ndash;2017, representing the absence of effective mitigation measures for NMVOC and NH<sub>3</sub> in current policies. The relative contributions of different sectors to emissions have significantly changed after several years' implementation of clean air policies, indicating that it is paramount to introduce new policies to enable further emission reductions in the future.</p>

      Related collections

      Author and article information

      Journal
      Atmospheric Chemistry and Physics Discussions
      Atmos. Chem. Phys. Discuss.
      Copernicus GmbH
      1680-7375
      May 02 2018
      : 1-27
      10.5194/acp-2018-374
      © 2018

      https://creativecommons.org/licenses/by/4.0/

      Comments

      Comment on this article