Atmospheric pollen counts of ceder(cryptomeria japonica) and cypress(chamaecypanis obtsusa) in Yanai city, Yamaguchi prefecture, Japan.

Abstract

The atmospheric pollen counts of Ceder (Cryptomeria japonica) and Cypress (Chamaecypanis obtsusa) were measured with Durham's standard devices installed on the roofs and ground in Yanai city, Yamaguchi prefecture, during the period between 1984 and 1987, and the following results were obtained. 1) The number of atmosphreic pollen counts changed significantly every year. There was a