自家蛍光特性を利用したスギ・ヒノキ花粉の測定と2005年春に出現した早朝の花粉高濃度現象について

抄録

Durham method has been adopted widely in Japan as the measurement method for counting the number of pollens. However, it is a tedious method for researchers because they have to count the exact number of pollens on plates using a microscope. Therefore the number of pollens has been reported only once a day from most of the observatories. In order to obtain the hourly number of pollens for further researches, automatic pollen counters have been developed.
We evaluated the performance of the pollen counter KP-1000 (Kowa Co. Ltd.), which had been developed by the project of Ministry of Education, Culture, Sports, Science and Technology. In order to evaluate the capability for counting Cedar and Cypress pollen particles, we compared the number of pollens measured by KP-1000 with the number of pollens obtained by Durham method and the number of pollens caught on the outlet filter of KP-1000. Furthermore we compared the number of pollens measured by KP-1000 with the number of pollens counted by another pollen counter KH-3000 (Yamato Mfg. Co. Ltd.). The result of the comparison showed that KP-1000 could distinguish Cedar and Cypress pollens accurately.
We found the high concentration of pollens in early mornings through the hourly observation of Cedar and Cypress pollens during the spring of 2005. By using the Backward Trajectory Method, we found that the high concentration phenomena of pollens were brought by the long distance transportation of pollens from Shizuoka area via Izu Peninsula and Kanagawa to Tokyo.