The concentrations of trace elements in feather moss Pleurozium schreberi (Brid.) Mitt. were used to indicate the relative levels of air pollution by trace elements in Polish national parks. Pleurozium schreberi was collected from nine national parks. The highest concentrations were recorded in the moss samples from the southern and most industrialised part of the country; the lowest from northern and north-eastern Poland. A comparison of data obtained from Polish national parks in the 1970s and 1990s showed a significant decrease in the concentrations of heavy metals. In the linear covariability estimation, the t quantile approach was used for multi-element comparison. A number of positive covariabilities were observed. This is a result of anthropogenic activity and the geochemical characteristics of the local environment, including crust composition to which soil composition is related. The statistical approach of t quantile to study common relationships between element concentrations can be used in the interpretation of biomonitoring research results in similar studies.

羽毛苔藓侧耳中的微量元素浓度。被用来指示波兰国家公园中微量元素的空气污染相对水平。schleberi侧耳菇是从9个国家公园中收集的。在该国南部和工业化程度最高的地区的苔藓样品中记录到最高浓度。最低的是波兰北部和东北部。从1970年代和1990年代从波兰国家公园获得的数据进行了比较，结果表明重金属的浓度显着下降。在线性协方差估计中，t分位数方法用于多元素比较。观察到许多正协方差。这是人为活动和当地环境的地球化学特征（包括与土壤成分有关的地壳成分）的结果。用于研究元素浓度之间共同关系的t分位数的统计方法可用于解释类似研究中的生物监测研究结果。