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Japanese Cedar Airborne Pollen Monitoring by Durham's and Burkard Samplers in Japan-Estimation of the Usefulness of Durham's Sampler on Japanese Cedar Pollinosis

机译:达勒姆和伯卡德采样器在日本进行的日本雪松空中花粉监测-估算达勒姆采样器对日本雪松花粉病的作用

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An attempt was made to compare pollen counts determined by the volumetric method (Burkard sampler) with the gravitational method (Durham's sampler) during the flowering seasons of evergreen coniferous trees such as (1) Japanese cedar, Cryptomeria japonica (abbreviation in this article: JC) and (2) Cupressaceae family, mainly hinoki cypress, Chamaecyparis obtusa (abbreviation: Cup). Observations were carried out in the cities of Fukuoka, Sagamihara and Funabashi over five consecutive years. The pollen counts obtained by Durham's method correlated very well to the counts obtained by the Burkard technique. Intensity of airborne pollen dispersion varied regionally and from year to year. Very low pollen counts were observed in Fukuoka in 2004 and excessively high pollen counts in Sagamihara in 2005.rnComparison of the results derived from Durham's sampling method with those derived from Burkard's sampling method revealed that these two methods are equally suitable for monitoring exposure to airborne JC and Cup pollen. To determine the starting days of JC and Cup pollen dispersion, Durham's technique is not inferior to Burkard's technique, but rather defines the start of pollen dispersion more distinctly. A long-term record of pollen counts obtained by Durham's technique from 1986 to 2008 in Fukuoka, revealed that the predictive values showed very low pollen counts in the case of particularly low July temperatures in the year before. As a conclusion, continuation of airborne pollen monitoring by the volumetric method (Burkard's sampling technique) in comparison with the gravitational method (Durham's sampling technique) will be required to evaluate the validity of the two methods for the climatic conditions of Japan. On the other hand, potential advantages of pollen data obtained by Durham's sampler deserve international re-evaluation.
机译:试图比较常绿针叶树如(1)日本雪松,柳杉(Cryptomeria japonica)的开花季节,通过体积法(伯卡德采样器)和重力法(达勒姆采样器)确定的花粉计数。 )和(2)柏科,主要是扁柏,Chamaecyparis obtusa(简称:Cup)。连续五年在福冈,相模原和船桥市进行了观测。通过达勒姆方法获得的花粉计数与通过伯卡德技术获得的计数非常相关。空气中花粉散布的强度随地区和年份的不同而不同。 2004年在福冈观察到的花粉计数非常低,而相模原市在2005年观察到的花粉计数过高。和杯花粉。为了确定JC和杯花粉分散的开始日期,达勒姆(Durham)的技术并不逊于伯卡德(Burkard)的技术,而是更清楚地定义了花粉分散的开始。达勒姆(Durham)技术从1986年至2008年在福冈获得的花粉计数的长期记录显示,在前一年7月温度特别低的情况下,预测值显示花粉计数非常低。结论是,将需要通过体积法(伯卡德采样技术)与重力法(达勒姆采样技术)相比较来继续监测机载花粉,以评估这两种方法在日本气候条件下的有效性。另一方面,达勒姆采样器获得的花粉数据的潜在优势值得国际重新评估。

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