Amazonian biogenic volatile organic compounds under global change
Amazonian biogenic volatile organic compounds under global change
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DOI：
10.1111/gcb.15185
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发表时间：
2020-05
影响因子：
11.6
通讯作者：
A. Yáñez-Serrano;E. Bourtsoukidis;E. Alves;M. Bauwens;T. Stavrakou;J. Llusià;I. Filella;A. Guenther;Jonathan Williams;P. Artaxo;K. Šindelářová;Jana Ďoubalová;J. Kesselmeier;J. Peñuelas
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作者：
A. Yáñez-Serrano;E. Bourtsoukidis;E. Alves;M. Bauwens;T. Stavrakou;J. Llusià;I. Filella;A. Guenther;Jonathan Williams;P. Artaxo;K. Šindelářová;Jana Ďoubalová;J. Kesselmeier;J. Peñuelas
生物源性挥发性有机化合物（BVOCs）在细胞、叶面、生态系统和大气等层面发挥着重要作用。亚马逊雨林是全球BVOC的主要来源之一，因此对其研究对于了解BVOC的动态至关重要。它还提供了对这种大型和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。我们回顾了目前关于亚马逊BVOC的信息，并确定了未来的研究重点，包括生物源排放和驱动因素、生态相互作用、大气影响、沉积过程以及气候和土地覆盖变化对BVOC动态的影响。然后构建了亚马逊BVOCs与亚马逊地区气候和土地利用变化趋势之间的反馈回路。卫星观测和模式模拟时间序列证明了所提出的循环的有效性，该循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。异戊二烯在雨季呈下降趋势，这很可能是由于森林生物量的损失，而倍半萜与异戊二烯的比值在旱季呈上升趋势，这表明气候变化导致温度胁迫引起的排放增加。
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.