Japanese cedar pollen and cypress pollen are the most common causes of seasonal allergic rhinitis in Japan. In the present study, we examined the relationship between climate factors and Japanese cedar and cypress pollen counts in Tsu city, Mie prefecture, Japan. Cedar and cypress pollen measurements were taken between 2009 and 2018 using a gravitational method (Durham’s sampler). Each year, during this 10-year period, measurements were taken daily from the beginning of February until the middle of May. The relationship between cedar and cypress pollen counts and the highest temperature, sunshine duration, and average humidity of a given year and the previous year were analyzed using multiple linear regression analysis. Sunshine duration in April of a given year and November of the previous year and average humidity in August of the previous year were associated with cedar and cypress pollen counts ( R 2 = 0.980, p < 0.000). Sunshine hours in April of a given year and temperature in August of the previous year were associated with cypress pollen counts; however, the temperature in October of the previous year was not ( R 2 = 0.872, p < 0.001). In addition, the temperature in January of a given year had an inverse association with cedar pollen counts ( R 2 = 0.338, p < 0.045). Thus, the evaluation of cedar and cypress pollen counts and weather conditions in Tsu city will provide valuable information to physicians for predicting pollen prevalence and treating patients with allergies effectively.

中文翻译：

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日本津市10年间雪松和柏树花粉计数与气候因素的相关性

日本雪松花粉和柏树花粉是日本季节性过敏性鼻炎的最常见原因。在本研究中，我们研究了气候因素与日本三重县津市的日本雪松和柏树花粉数量之间的关系。雪松和柏树花粉测量是在 2009 年至 2018 年期间使用重力方法（达勒姆采样器）进行的。每年，在这 10 年期间，从 2 月初到 5 月中旬每天都进行测量。采用多元线性回归分析了雪松和柏树花粉计数与给定年份和上一年的最高温度、日照时间和平均湿度之间的关系。给定年份 4 月和前一年 11 月的阳光持续时间以及前一年 8 月的平均湿度与雪松和柏树花粉计数相关（R 2 = 0.980，p < 0.000）。给定年份 4 月的日照时间和前一年 8 月的温度与柏树花粉计数有关；然而，前一年 10 月的温度却不是（R 2 = 0.872，p < 0.001）。此外，给定年份一月份的温度与雪松花粉计数呈负相关（R 2 = 0.338，p < 0.045）。因此，对津市雪松和柏树花粉计数和天气状况的评估将为医生预测花粉流行和有效治疗过敏患者提供有价值的信息。980，p < 0.000）。给定年份 4 月的日照时间和前一年 8 月的温度与柏树花粉计数有关；然而，前一年 10 月的温度却不是（R 2 = 0.872，p < 0.001）。此外，给定年份一月份的温度与雪松花粉计数呈负相关（R 2 = 0.338，p < 0.045）。因此，对津市雪松和柏树花粉计数和天气状况的评估将为医生预测花粉流行和有效治疗过敏患者提供有价值的信息。980，p < 0.000）。给定年份 4 月的日照时间和前一年 8 月的温度与柏树花粉计数有关；然而，前一年 10 月的温度却不是（R 2 = 0.872，p < 0.001）。此外，给定年份一月份的温度与雪松花粉计数呈负相关（R 2 = 0.338，p < 0.045）。因此，对津市雪松和柏树花粉计数和天气状况的评估将为医生预测花粉流行和有效治疗过敏患者提供有价值的信息。此外，给定年份一月份的温度与雪松花粉计数呈负相关（R 2 = 0.338，p < 0.045）。因此，对津市雪松和柏树花粉计数和天气状况的评估将为医生预测花粉流行和有效治疗过敏患者提供有价值的信息。此外，给定年份一月份的温度与雪松花粉计数呈负相关（R 2 = 0.338，p < 0.045）。因此，对津市雪松和柏树花粉计数和天气状况的评估将为医生预测花粉流行和有效治疗过敏患者提供有价值的信息。