Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia.
Faculty of Forestry, Technical University in Zvolen, Zvolen, Slovakia.
Environ Monit Assess. 2020 Mar 12;192(4):233. doi: 10.1007/s10661-020-8176-7.
The amount of ground-level ozone in beech forests depends not only on the pollution intensity but also on the other environmental factors. This paper presents the analysis of the concentrations of ground-level ozone during the growing season (April-September) of beech trees, which represent the main objects modifying the microclimate conditions inside the forest. The research was localized in the Kremnické vrchy Mountains in Slovakia and realized during the period of 2004-2013. The study was carried out on four research plots with different stand structure which was caused by various intensities of cuts. Our results showed that the maximum concentration of ozone during this period was observed on the plot where the original beech stand (without management intervention) grown-maximal concentration reached the values from 44.0 to 50.0 ppb (in the sub-periods 2004-2008 and 2009-2013, respectively). On the other hand, the minimum concentration, 14.0 ppb, was found immediately after the cutting in 2004 on the plot, where all adult trees were removed. A similar course was found within average values of the ozone concentration on the research plots. Despite the fact that the results did not confirm significant differences among the plots, temporal trend showed an increasing concentration of ozone on all plots during the study period.
林内地面臭氧的含量不仅取决于污染强度，还取决于其他环境因素。本文分析了 2004 年至 2013 年期间在斯洛伐克 Kremnické vrchy 山区进行的生长季节（4 月至 9 月）山毛榉树木周围地面臭氧浓度。研究选择了四个具有不同林分结构的研究地块，这些林分结构是由不同强度的采伐造成的。研究结果表明，在此期间，臭氧的最大浓度出现在原始山毛榉林（未经管理干预）生长的地块上-最大浓度达到了 44.0 至 50.0 ppb（在 2004-2008 年和 2009-2013 年的子期间分别达到）。另一方面，在 2004 年进行砍伐的地块上，臭氧浓度的最小值为 14.0 ppb，这是所有成年树木被砍伐后立即出现的。在研究地块上的臭氧浓度平均值中也发现了类似的情况。尽管结果并未证实各个地块之间存在显著差异，但时间趋势表明，在整个研究期间，所有地块上的臭氧浓度都呈上升趋势。
