愛媛県松山市における主要な花粉抗原の年間飛散状況 ～ 2019 年から 2021 年の検討～

抄録

In this study, we introduce a calendar of important allergenic pollen in Matsuyama, Ehime, Japan, that was monitored from 2019 to 2021. The airborne pollen count was evaluated using the gravitational method, Durham’s sampler, with the samples being counted every 10 days, and the mean daily pollen count was calculated to produce the calendar. The trees whose pollen counts were evaluated included Cupressaceae (Japanese cedar and cypress families), Betulaceae (alder and other birch families), and the Ulmaceae family. Furthermore, the pollen counts of Gramineae and Asteraceae (Artemisia, Ambrosia, and other families) and Cannabaceae (Humulus japonicus) were obtained. The pollen dispersal period showed some changes over 3 years. In Matsuyama, the Japanese cedar was the most scattered and was a significant contributor to pollen antigen when combined with the cypress family. As pollen belonging to Betulaceae and Fagaceae, including alder, have been observed to be scattered in large numbers, special attention must be paid to such scattering. Gramineae pollen were most abundantly scattered among the grasses and were observed to be present almost year-round from spring to autumn. The observed pollen count of the Asteraceae family was extremely small. Pollen from Humulus japonicus were observed from September to October, and its number significantly increased from 31 in 2019 to 139 in 2021; thus, more attention should be given to this pollen.