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首页> 外文期刊>Environmental Science & Technology >Sesquiterpenoid Emissions from Agricultural Crops: Correlations to Monoterpenoid Emissions and Leaf Terpene Content
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Sesquiterpenoid Emissions from Agricultural Crops: Correlations to Monoterpenoid Emissions and Leaf Terpene Content

机译：农业作物的倍半萜排放：与单萜排放和叶萜烯含量的关系

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摘要

Emissions of biogenic volatile organic compounds (BVOCs) are important precursors to both ozone and secondary organic aerosol formation. In this study, we identify and quantify volatile (C_(10)) and intermediate-volatility (C_(15)) BVOCs stored in and emitted from 22 prominent woody and herbaceous crops with a particular focus on sesquiterpenoids (SQTs), which have presented measurement challenges in previous studies. Monoterpenoids (MNTs) and SQTs were simultaneously emitted from all the crops studied; there were significant correlations between emission rates and leaf content for both MNTs and SQTs and additional correlations between MNTs and SQTs in both emissions and leaf content Our results suggest that species with high concentrations of stored terpenoids in their leaves, such as those grown commercially for their essential oil content, are likely high BVOC emitters. Emissions from agricultural species were dominated by SQTs at low MNT emission rates (on the order of several tens of ng/(g_(DM)·h)), while at higher MNT levels (on the order of several hundreds of ng/(g_(DM)· h)), SQT emissions were approximately equivalent Based on our empirical correlations, we estimate that global SQT emissions are similar to MNT emissions and on the order of 100 Tg yr~(-1), which justifies the need for better representation of SQTs in both BVOC emission and atmospheric models.
机译：生物挥发性有机化合物（BVOC）的排放是臭氧和二次有机气溶胶形成的重要先兆。在这项研究中，我们确定并量化了22种主要木本和草类作物中储存和释放的挥发性（C_（10））和中等挥发性（C_（15））BVOC，其中特别关注倍半萜（SQT），以往研究中的测量挑战。所有研究的农作物同时排放单萜类化合物（MNTs）和SQTs。 MNT和SQT的排放速率与叶片含量之间存在显着的相关性，并且MNT和SQT的排放与叶片含量之间存在显着的相关性我们的结果表明，在其叶片中具有高储存萜类化合物的物种，例如为其精油含量高，可能是BVOC排放量高的元素。在低MNT排放速率（几十ng /（g_（DM）·h）数量级）下，SQT占农业物种排放的主导，而在较高MNT排放水平（几百ng /（g_g_数量级）的情况下，SQTs占主导地位。 （DM）·h）），SQT排放量大致相等基于我们的经验相关性，我们估计全球SQT排放量与MNT排放量相似，约为100 Tg yr〜（-1），这说明需要更好的排放量。在BVOC排放和大气模型中SQT的表示形式。

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  • 来源
    《Environmental Science & Technology》 |2010年第10期|P.3758-3764|共7页
  • 作者

    ELENA ORMENO; DREW R. CENTNER; SILVANO FARES; JOHN KARLIK; JEONG HOO PARK; ALLEN H. GOLDSTEIN;

  • 作者单位

    Division of Ecosystem Sciences, Department of Environmental Science, Policy, and Management, University of California, Berkeley, California 94720;

    rnDepartment of Civil and Environmental Engineering, University of California, Berkeley, California 94720;

    rnDivision of Ecosystem Sciences, Department of Environmental Science, Policy, and Management, University of California, Berkeley, California 94720 CNR (National Research Council) - Istituto di Biologia Agroambientale e Forestale, Via Salaria km. 29, 300, 00016 Monterotondo Scalo (Rome), Italy;

    rnUniversity of California Cooperative Extension, Bakersfield, California;

    rnDivision of Ecosystem Sciences, Department of Environmental Science, Policy, and Management, University of California, Berkeley, California 94720;

    rnDivision of Ecosystem Sciences, Department of Environmental Science, Policy, and Management, University of California, Berkeley, California 94720 CNR (National Research Council) - Istituto di Biologia Agroambientale e Forestale, Via Salaria km. 29, 300, 00016 Monterotondo Scalo (Rome), Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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