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Comparative study of seasonal and intradiurnal variation of airborne herbaceous pollen in urban and rural areas

机译：城乡空气中草本花粉的季节变化和昼内变化的比较研究

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The content of herbaceous pollen in the atmosphere depends on the vegetal cover, climate and the weather and geographical conditions. The aim of the study reported here was to compare aerobiological data obtained from pollen monitoring stations located at sites differing with respect to their flora and microclimate - i.e. a town and a rural area. A volumetric method was used for sampling. In each microscopic preparation 12 vertical strips corresponding with 2-h intervals were analysed. A 90% method was used to determine the pollen season. The results were statistically verified using the u test and the Kol-mogorov-Smirnov, Spearman and Wilcoxon tests. Higher values of the Seasonal Pollen Index (SPI), higher daily average concentrations and higher peak values were recorded in the rural area. An analysis of intradiurnal variations of airborne pollen showed that apart from the Poaceae the number of pollen grains in the air began to increase earlier in the day in the rural area; in the case of Rumex and Ambrosia, the maximum values also appeared a few hours earlier. For all the taxa investigated, the analysis of correlation showed a significant association between the daily average concentrations at both sites. The weakest association occurred for Plantago lanceolata; for all other taxa, the determination coefficients (R~2) were high. The results of the Wilcoxon test showed that, despite the strong positive association between daily concentrations of the pollen types investigated, there were differences in mean pollen concentrations in the overlapping pollen season. Mean concentrations of Poaceae and Rumex airborne pollen were significantly higher in the rural area in both years, and those of Urtica and P. lanceolata were significantly higher only in 2002.
机译：大气中草本花粉的含量取决于植被，气候以及天气和地理条件。这里报道的研究的目的是比较从花粉监测站获得的空气生物学数据，这些监测站位于植物区系和微气候不同的地点（即城镇和农村地区）。使用体积法进行采样。在每个显微制品中，分析了以2小时间隔对应的12条垂直条。使用90％的方法确定花粉季节。使用u检验以及Kol-mogorov-Smirnov，Spearman和Wilcoxon检验对结果进行统计验证。在农村地区记录到较高的季节性花粉指数（SPI），较高的每日平均浓度和较高的峰值。对空气中花粉的日内变化的分析表明，除禾本科外，农村地区空气中花粉粒的数量在一天中的早些时候开始增加。对于Rumex和Ambrosia，最大值也在几个小时之前出现。对于所有调查的分类单元，相关性分析显示两个站点的日平均浓度之间存在显着关联。车前草的关联性最弱。对于所有其他分类单元，确定系数（R〜2）较高。 Wilcoxon试验的结果表明，尽管所调查花粉类型的日浓度之间存在强的正相关性，但在重叠的花粉季节中，平均花粉浓度存在差异。在这两年中，农村地区禾本科和Rumex空气传播花粉的平均浓度均显着较高，而荨麻疹和轮叶P. lanceolata的平均浓度仅在2002年显着较高。

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