Amazonian biogenic volatile organic compounds under global change.,Global Change Biology

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Amazonian biogenic volatile organic compounds under global change.
Global Change Biology ( IF 10.8 ) Pub Date : 2020-05-23 , DOI: 10.1111/gcb.15185
Ana M Yáñez-Serrano _{1,

2} , Efstratios Bourtsoukidis ₃ , Eliane G Alves ₄ , Maite Bauwens ₅ , Trissevgeni Stavrakou ₅ , Joan Llusià _{1,

2} , Iolanda Filella _{1,

2} , Alex Guenther ₆ , Jonathan Williams ₃ , Paulo Artaxo ₇ , Katerina Sindelarova ₈ , Jana Doubalova _{8,

9} , Jürgen Kesselmeier ₃ , Josep Peñuelas _{1,

2}

Affiliation

Biogenic volatile organic compounds (BVOCs) play important roles at cellular, foliar, ecosystem and atmospheric levels. The Amazonian rainforest represents one of the major global sources of BVOCs, so its study is essential for understanding BVOC dynamics. It also provides insights into the role of such large and biodiverse forest ecosystem in regional and global atmospheric chemistry and climate. We review the current information on Amazonian BVOCs and identify future research priorities exploring biogenic emissions and drivers, ecological interactions, atmospheric impacts, depositional processes and modifications to BVOC dynamics due to changes in climate and land cover. A feedback loop between Amazonian BVOCs and the trends of climate and land‐use changes in Amazonia is then constructed. Satellite observations and model simulation time series demonstrate the validity of the proposed loop showing a combined effect of climate change and deforestation on BVOC emission in Amazonia. A decreasing trend of isoprene during the wet season, most likely due to forest biomass loss, and an increasing trend of the sesquiterpene to isoprene ratio during the dry season suggest increasing temperature stress‐induced emissions due to climate change.

中文翻译：

全球变化下的亚马逊生物成因挥发性有机化合物。

生物挥发性有机化合物（BVOC）在细胞，叶面，生态系统和大气层均起着重要作用。亚马逊雨林是全球BVOC的主要来源之一，因此其研究对于了解BVOC动态至关重要。它还提供了关于这种大型生物多样性森林生态系统在区域和全球大气化学和气候中的作用的见解。我们回顾了有关亚马逊BVOC的当前信息，并确定了未来的研究重点，以探索生物源排放和驱动因素，生态相互作用，大气影响，沉积过程以及由于气候和土地覆盖变化而对BVOC动态的修改。然后，建立了亚马逊BVOC与亚马逊地区气候和土地利用变化趋势之间的反馈回路。卫星观测和模型模拟时间序列证明了拟议的环的有效性，该环显示了气候变化和森林砍伐对亚马逊地区BVOC排放的综合影响。雨季中异戊二烯的下降趋势很可能是由于森林生物量的损失，而旱季中倍半萜烯与异戊二烯之比的上升趋势则是由于气候变化导致温度胁迫诱导的排放增加。

更新日期：2020-05-23

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