Sado M, Nakahama T
School of Pharmaceutical Science, Toho University, Chiba, Japan.
Allerg Immunol (Paris). 1993 Apr;25(4):161-6.
By using a volumetric method, the authors made an investigation on airborne pollen grains in connection with the incidence of pollinosis since 1969, in Toho University, Funabashi, Chiba, Japan. The airborne pollen grains in each sample were counted under the microscope to identify the pollen types, and the pollen grains were classified into seven types according to the classification of pollen grains in Japan reported by Ikuse. In this report, the accumulated number of each species was analyzed statistically by circular plot, semi-logarithmic plot and test of skewness (g1) and kurtosis (g2) of frequency distribution by G. W. Snedecor. From the investigation in the years of 1969, 1970, 1990, 1991, the most frequent airborne pollen grains belonged to the 1-aperturate 3C(ab) type pollen in 1969 and 1970, and to the 1-aperturate 3B type pollen in 1990 and 1991, reflecting the change of environment during twenty years. By the g1 and g2 statistics for almost all species, the mode of distribution curve was significantly smaller than the mean, indicating that the whole distribution significantly skewed from a normal distribution, and the peak was flat for the herbs, while sharp for the trees.
自1969年起，作者在日本千叶县船桥市的东邦大学，采用容量法对气传花粉颗粒与花粉症发病率的关系进行了调查。在显微镜下对每个样本中的气传花粉颗粒进行计数，以确定花粉类型，并根据生濑报告的日本花粉粒分类方法，将花粉粒分为七类。在本报告中，通过圆形图、半对数图以及G. W. Snedecor的频率分布偏度（g1）和峰度（g2）检验，对每个物种的累积数量进行了统计分析。从1969年、1970年、1990年和1991年的调查结果来看，1969年和1970年最常见的气传花粉粒属于单萌发孔3C(ab)型花粉，而1990年和1991年则属于单萌发孔3B型花粉，这反映了二十年间环境的变化。通过对几乎所有物种的g1和g2统计分析，分布曲线的众数明显小于均值，表明整体分布明显偏离正态分布，草本植物的峰值较平缓，而树木的峰值则较尖锐。
