Geochemistry and the Environment Division, Institute of Chemistry, Jan Kochanowski University, 15G Swietokrzyska St, 25-406 Kielce, Poland.
J Environ Sci (China). 2013 Feb 1;25(2):340-7. doi: 10.1016/s1001-0742(12)60040-0.
The principal objective of this study was to compare bioaccumulative properties of two terrestrial moss species Hylocomium splendens and Pleurozium schreberi from the Kielce area (south-central Poland), using various statistical techniques. Forty-six moss samples from 23 sampling sites located within the city limits were analyzed for 33 trace elements. The results indicated that 17 elements (Ba, Ce, Co, Cu, Eu, Fe, Gd, Hg, La, Mo, Nd, Ni, Pb, Pr, Sm, V, Y) dominated in H. splendens, whereas only three elements (Mn, Sr, Zn) occurred in excessive amounts in P. schreberi. No differences in the distribution pattern of Dy, Er, Ho, Sn, Tb, Th and Yb were observed. The element concentration ratio (PI/Hy) varied from 0.50 to 1.19. For 14 elements (Ce, Co, Cu, Fe, Gd, Hg, La, Mo, Nd, Ni, Pb, Sm, Th, V), PI/Hy < 1; for 4 elements (Cd, Mn, Sr, Zn), PI/Hy > 1; for 7 elements (Ba, Dy, Er, Eu, Pr, Y, Yb), PI/Hy = equalled 1. Czekanowski's method showed similarities in rare earth element concentrations for both moss species. The cluster analysis exhibited three significant clusters at D(link)/D(max) x 100 < 50 for both moss species. Strong positive Spearman correlations between both moss species were recorded for the following pairs: Ba-Ba, Co-Co, Er-Er, Eu-Eu, Gd Gd, Mn-Mn, Ni-Ni, Pb-Pb, Pr-Pr, Sm-Sm, Th-Th, Y-Y, and Yb-Yb. Nonparametric tests (Sign test, Wilcoxon tests) showed statistically significant differences only for Cd, Ce, Co, Cu, Hg, Mo, Ni, Pb and Sr. The scanning electron microscope study of H. splendens and P. schreberi revealed a different morphology of these species with no injuries.
本研究的主要目的是使用各种统计技术比较来自波兰中南部凯尔采地区的两种陆生苔藓物种（Hylocomium splendens 和 Pleurozium schreberi）的生物累积特性。对 23 个采样点的 46 个苔藓样本进行了 33 种痕量元素的分析。结果表明，17 种元素（Ba、Ce、Co、Cu、Eu、Fe、Gd、Hg、La、Mo、Nd、Ni、Pb、Pr、Sm、V、Y）在 H. splendens 中占主导地位，而只有 3 种元素（Mn、Sr、Zn）在 P. schreberi 中过量存在。Dy、Er、Ho、Sn、Tb、Th 和 Yb 的分布模式没有差异。元素浓度比（PI/Hy）从 0.50 到 1.19 不等。对于 14 种元素（Ce、Co、Cu、Fe、Gd、Hg、La、Mo、Nd、Ni、Pb、Sm、Th、V），PI/Hy < 1；对于 4 种元素（Cd、Mn、Sr、Zn），PI/Hy > 1；对于 7 种元素（Ba、Dy、Er、Eu、Pr、Y、Yb），PI/Hy = 1。Czekanowski 方法表明两种苔藓物种的稀土元素浓度相似。聚类分析表明，两种苔藓物种的 D(link)/D(max) x 100 < 50 时存在三个显著聚类。两种苔藓物种之间的强正 Spearman 相关性记录为以下对：Ba-Ba、Co-Co、Er-Er、Eu-Eu、Gd-Gd、Mn-Mn、Ni-Ni、Pb-Pb、Pr-Pr、Sm-Sm、Th-Th、Y-Y 和 Yb-Yb。非参数检验（Sign 检验、Wilcoxon 检验）仅表明 Cd、Ce、Co、Cu、Hg、Mo、Ni、Pb 和 Sr 存在统计学显著差异。对 H. splendens 和 P. schreberi 的扫描电子显微镜研究表明，这两种物种的形态不同，没有损伤。
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