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<front>
<journal-meta>
<journal-id journal-id-type="publisher">ACPD</journal-id>
<journal-title-group>
<journal-title>Atmospheric Chemistry and Physics Discussions</journal-title>
<abbrev-journal-title abbrev-type="publisher">ACPD</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">1680-7375</issn>
<publisher><publisher-name>Copernicus GmbH</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/acpd-12-787-2012</article-id>
<title-group>
<article-title>BVOCs emission in a semi-arid grassland under climate warming and nitrogen deposition</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Wang</surname>
<given-names>H. J.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Xia</surname>
<given-names>J. Y.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Mu</surname>
<given-names>Y. J.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Nie</surname>
<given-names>L.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Han</surname>
<given-names>X. G.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Wan</surname>
<given-names>S. Q.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Xiangshan, Beijing 100093, China</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Beijing Municipal Research Institute of Environmental Protection, Xicheng, Beijing 100037, China</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China</addr-line>
</aff>
<aff id="aff5">
<label>5</label>
<addr-line>State Key Laboratory of Cotton Biology, Henan Key State Laboratory of Plant Stress Biology, School of Life Sciences, Henan University, Kaifeng, Henan 475003, China</addr-line>
</aff>
<pub-date pub-type="epub">
<day>10</day>
<month>01</month>
<year>2012</year>
</pub-date>
<volume>12</volume>
<issue>1</issue>
<fpage>787</fpage>
<lpage>815</lpage>
<permissions>
<license xlink:type="simple">
<license-p>This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.</license-p>
</license>
</permissions>
<self-uri xlink:href="http://www.atmos-chem-phys-discuss.net/12/787/2012/acpd-12-787-2012.html">This article is available from http://www.atmos-chem-phys-discuss.net/12/787/2012/acpd-12-787-2012.html</self-uri>
<self-uri xlink:href="http://www.atmos-chem-phys-discuss.net/12/787/2012/acpd-12-787-2012.pdf">The full text article is available as a PDF file from http://www.atmos-chem-phys-discuss.net/12/787/2012/acpd-12-787-2012.pdf</self-uri>
<abstract>
<p>Biogenic volatile organic compounds (BVOCs) profoundly affect
      atmospheric chemistry and ecosystem functioning. BVOCs emission and
      their responses to global change are still unclear in grasslands,
      which cover one quarter of the Earth&apos;s land surface and are currently
      undergoing the largest changes. Over two growing seasons, we conducted
      a field experiment in a semi-arid grassland (Inner Mongolia, China) to
      examine the emission and the responses of BVOCs emissions to warming
      and nitrogen deposition. The natural emission rate (NER) of
      monoterpene (dominant BVOCs here) is 107 ± 16 μg m&lt;sup&gt;−2&lt;/sup&gt; h&lt;sup&gt;−1&lt;/sup&gt; in drought 2007, and
      266 ± 53 μg m&lt;sup&gt;−2&lt;/sup&gt; h&lt;sup&gt;−1&lt;/sup&gt; in wet 2008,
      respectively. Warming decreased the standard emission factor (SEF) by
      24% in 2007, while increased it by 43% in 2008. The
      exacerbated soil moisture loss caused by warming in dry season might
      be responsible for the decrease of SEF in 2007. A possible threshold
      of soil moisture (8.2% (v/v)), which controls the direction of
      warming effects on monoterpene emission, existed in the semiarid
      grassland. Nitrogen deposition decreased the coverage of
      &lt;i&gt;Artemisia frigida&lt;/i&gt; and hence reduced the NER by 24%
      across the two growing seasons. These results suggest that the
      grasslands dominated by the extended &lt;i&gt;Artemisia frigida&lt;/i&gt; are an
      important source for BVOCs, while the responses of their emissions to
      global changes are more uncertain since they depend on
      multifactorial/in-situ/conditions.</p>
</abstract>
<counts><page-count count="29"/></counts>
</article-meta>
</front>
<body/>
<back>
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