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Characterizing BVOC emissions of common plant species in northern China using real world measurements: Towards strategic species selection to minimize ozone forming potential of urban greening
Urban Forestry & Urban Greening ( IF 6.0 ) Pub Date : 2024-04-30 , DOI: 10.1016/j.ufug.2024.128341 Baowen Zhang , Yanqi Jia , Guangkun Bai , Huijuan Han , Weizhen Yang , Wenxia Xie , Lingyu Li
Urban Forestry & Urban Greening ( IF 6.0 ) Pub Date : 2024-04-30 , DOI: 10.1016/j.ufug.2024.128341 Baowen Zhang , Yanqi Jia , Guangkun Bai , Huijuan Han , Weizhen Yang , Wenxia Xie , Lingyu Li
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Biogenic volatile organic compounds (BVOCs) emitted by plants play a crucial role in ozone (O) formation. Avoiding urban air quality trade-offs of urban greening involves selecting low-emission and O forming potential (OFP) plants. Using a dynamic enclosure system and the TD-GC-MS technique, we measured BVOC emissions from 47 common urban greening plant species in northern China. The potential to form O was estimated based on the emission quantification of 63 compounds and their maximum incremental reactivity (MIR) values. The results indicated that isoprene and most of monoterpene dominated BVOC emissions. Most of the broad-leaved trees were isoprene emitter, whereas needle-leaved and some broad-leaved trees emitted monoterpene and sesquiterpene. Alkene emissions, such as 1-hexene, were relatively low, while exhibited higher aromatics such as m-ethyltoluene. Broad-leaved trees had a higher potential for O generation compared to needle-leaved trees. BVOC emission rates and OFP varied significantly among plant species, ranging from 0.08 to 112.23 μg/(g h) and 0.33–1130.75 μg/(g h), respectively. To minimize BVOC emissions and O pollution, we determined a list of preferred urban greening plants using hierarchical cluster analysis combined BVOC emission rates and OFPs. Based on our findings, we recommend incorporating plants with low BVOC emissions and OFPs, such as , , and , in future urban greening plans to prevent strengthening O pollution in northern China.
更新日期：2024-04-30
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