生物挥发性有机化合物(BVOCs),特别是萜类化合物,可以显著驱动大气中臭氧(O3)和二次有机气溶胶(SOA)的形成,以及直接或间接影响全球气候变化。了解它们的排放机制以及目前在排放测量和估计方面的进展对于准确确定排放特性至关重要,以及评估它们在大气化学和气候变化中的作用。本文综述了萜类化合物的合成和释放机制。影响其排放的生物和非生物因素,发射观测技术的发展,以及数百篇已发表论文的排放估算。我们回顾了中国的主要观察和估计,占全球BVOC排放总量的很大比例。该评论建议需要进一步研究环境因素对萜类化合物排放的综合影响,特别是土壤水分和氮含量,应在排放模型中进行量化,以提高估算的准确性。在中国,有必要使用动态封闭技术对不同地区的当地植物进行更准确的测量,以建立一个准确的优势树种的当地排放率数据库。这将有助于提高国家和全球排放清单的准确性。这篇综述提供了对萜类化合物排放的全面了解,以及详细研究的前景,以准确描述全球和中国的萜类化合物排放特征。
Biogenic volatile organic compounds (BVOCs), particularly terpenoids, can significantly drive the formation of ozone (O3) and secondary organic aerosols (SOA) in the atmosphere, as well as directly or indirectly affect global climate change. Understanding their emission mechanisms and the current progress in emission measurements and estimations are essential for the accurate determination of emission characteristics, as well as for evaluating their roles in atmospheric chemistry and climate change. This
review summarizes the mechanisms of terpenoid synthesis and release, biotic and abiotic factors affecting their emissions, development of emission observation techniques, and emission estimations from hundreds of published papers. We provide a
review of the main observations and estimations in China, which contributes a significant proportion to the total global BVOC emissions. The
review suggests the need for further research on the comprehensive effects of environmental factors on terpenoid emissions, especially soil moisture and nitrogen content, which should be quantified in emission models to improve the accuracy of estimation. In China, it is necessary to conduct more accurate measurements for local plants in different regions using the dynamic enclosure technique to establish an accurate local emission rate database for dominant tree species. This will help improve the accuracy of both national and global emission inventories. This
review provides a comprehensive understanding of terpenoid emissions as well as prospects for detailed research to accurately describe terpenoid emission characteristics worldwide and in China.