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@ARTICLE{Ghirardo:283507,
      author       = {Ghirardo, Andrea and Xie, Junfei and Zheng, Xunhua and
                      Wang, Yuesi and Grote, Rüdiger and Block, Katja and Wildt,
                      Jürgen and Mentel, Thomas F. and Kiendler-Scharr, Astrid
                      and Hallquist, Mattias and Butterbach-Bahl, Klaus and
                      Schnitzler, Jörg-Peter},
      title        = {{U}rban stress-induced biogenic {VOC} emissions and
                      {SOA}-forming potentials in {B}eijing},
      journal      = {Atmospheric chemistry and physics},
      volume       = {16},
      number       = {5},
      issn         = {1680-7324},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2016-01840},
      pages        = {2901 - 2920},
      year         = {2016},
      abstract     = {Trees can significantly impact the urban air chemistry by
                      the uptake and emission of reactive biogenic volatile
                      organic compounds (BVOCs), which are involved in ozone and
                      particle formation. Here we present the emission potentials
                      of "constitutive" (cBVOCs) and "stress-induced" BVOCs
                      (sBVOCs) from the dominant broadleaf woody plant species in
                      the megacity of Beijing. Based on the municipal tree census
                      and cuvette BVOC measurements on leaf level, we built an
                      inventory of BVOC emissions, and assessed the potential
                      impact of BVOCs on secondary organic aerosol (SOA) formation
                      in 2005 and 2010, i.e., before and after realizing the large
                      tree-planting program for the 2008 Olympic Games. We found
                      that sBVOCs, such as fatty acid derivatives, benzenoids, and
                      sesquiterpenes, constituted a significant fraction
                      $( ∼  40 \%)$ of the total annual BVOC emissions,
                      and we estimated that the overall annual BVOC budget may
                      have doubled from
                       ∼  4.8  ×  109 g C year−1 in 2005
                      to  ∼  10.3  ×  109 g C year−1 in
                      2010 due to the increase in urban greening, while at the
                      same time the emission of anthropogenic VOCs (AVOCs)
                      decreased by $24 \%.$ Based on the BVOC emission
                      assessment, we estimated the biological impact on SOA mass
                      formation potential in Beijing. Constitutive and
                      stress-induced BVOCs might produce similar amounts of
                      secondary aerosol in Beijing. However, the main contributors
                      of SOA-mass formations originated from anthropogenic sources
                      $(> 90 \%).$ This study demonstrates the general
                      importance to include sBVOCs when studying BVOC emissions.
                      Although the main problems regarding air quality in Beijing
                      still originate from anthropogenic activities, the present
                      survey suggests that in urban plantation programs, the
                      selection of low-emitting plant species has some potential
                      beneficial effects on urban air quality.},
      cin          = {IEK-8 / IBG-2},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-8-20101013 / I:(DE-Juel1)IBG-2-20101118},
      pnm          = {243 - Tropospheric trace substances and their
                      transformation processes (POF3-243)},
      pid          = {G:(DE-HGF)POF3-243},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000374702000011},
      doi          = {10.5194/acp-16-2901-2016},
      url          = {https://juser.fz-juelich.de/record/283507},
}