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CHUH YONEBAYASHI
Department Department of Environment Systems, Faculty of Geo-Environmental Science Position Professor |
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| Language | Japanese |
| Publication Date | 2023/03/31 |
| Type | |
| Peer Review | Peer reviewed |
| Title | A census of airborne pollen in Kumagaya, central Japan, for the five years 2017-2021 |
| Contribution Type | |
| Journal | Bulletin of Geo-Environmental Science, Rissho University |
| Journal Type | Japan |
| Publisher | Faculty of Geo-Environmental Science, Rissho University |
| Volume, Issue, Page | pp.1-13 |
| Details | A generalized pollen calendar based on a five-year (2017—2021) census was made to clarify seasonal changes in airborne pollen in a suburb of Kumagaya, central Japan. Tree and herbaceous seasons were from late February to late May and from early May to late October, respectively. Total catch of all pollen and spore types varied between 12210.5 grains (/cm2) in 2020 and 32397.8 grains in 2018. Temperatures in flowering season of major trees (March to May) seem to control the annual total catch. Annual catch of total trees was variable (CV = 0.38) and those of herbs (0.24) and fern spores (0.17) were relatively stable. Dates of the maximum reading of many tree pollen types in spring were 5 to 15 days earlier, and those of most herb pollen types were about 10 days later in Kumagaya than in Chiba. All of the average temperatures of main tree season (March to May), main herbaceous season (August to October) and studied 5 whole years were higher in Kumagaya. |