Volatile organic compound emission profiles of four common arctic plants

摘要: Abstract The biogenic volatile organic compound (BVOC) emissions from plants impact atmosphere and climate. species-specific emissions, thereby the atmospheric impact, of many plant species are still unknown. Knowledge BVOC emission arctic is particularly limited. vast area relatively high leaf temperature give Arctic potential for that cannot be neglected. This field study aimed to elucidate profiles four common in their natural environment during growing season. BVOCs were sampled aboveground parts Empetrum hermaphroditum, Salix glauca, arctophila Betula nana using dynamic enclosure technique collection volatiles adsorbent cartridges, analyzed by gas chromatography-mass spectrometry. Sampling occurred three times: late June/early July, mid-July early August. E. hermaphroditum emitted least BVOCs, dominated sesquiterpenes (SQTs) non-isoprenoid BVOCs. spp. most, isoprene. B. nana composed about two-thirds with moderate amounts monoterpenes (MTs) SQTs. total MT SQT standardized 30 °C highest first measurement while other had last As climate change expected increase biomass vegetation composition Arctic, ecosystems will also change. Our results suggest if abundance deciduous shrubs like increases at expense slower evergreens E. hermaphroditum, there increased isoprene, MTs Arctic.