The content of sulphur and copper (Cu), iron (Fe), manganese (Mn), zinc (Zn) and of assimilation pigments in the needles of Scots pine (Pinus sylvestris L.) in the forests of Bydgoszcz, Poland was determined. The content of those metals and the activity of dehydrogenases (DHA) in the rhizosphere of the trees was assayed. The average total sulphur (TS) content in 2-year-old pine needles was 832.4 mg kg⁻¹ d.w. No significant correlation was found between TS and Cu, Fe, Mn and Zn in needles and the content of assimilation pigments indicating no phytotoxic effect of sulphur dioxide (SO₂) and metals on Scots pine. The content of metals in the needles pointed to an inconsiderable degree of human impact. The soils in the surface layer were not contaminated with heavy metals. With the principal component analysis (PCA) two principal components were identified which accounted for 68% of the total change in variation. The variables that determined the principal components were the soil content of organic carbon (TOC), total nitrogen (TN), TS and sulphates (SO₄²⁻), the soil content of Mn, Zn, available forms to plants of Cu_, Mn, and the content of Cu, Fe in needles.

中文翻译：

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城市群林区樟子松针叶和土壤中重金属和硫的含量

测定了波兰 Bydgoszcz 森林中的苏格兰松 ( Pinus sylvestris L.)针叶中硫和铜 (Cu)、铁 (Fe)、锰 (Mn)、锌 (Zn) 和同化色素的含量。测定了树木根际中这些金属的含量和脱氢酶 (DHA) 的活性。2 年生松针的平均总硫 (TS) 含量为 832.4 mg kg ^-1 dw TS 与针中的 Cu、Fe、Mn 和 Zn 之间没有显着相关性，同化色素的含量表明没有植物毒性作用二氧化硫 (SO ₂) 和苏格兰松的金属。针中金属的含量表明对人类的影响程度微乎其微。表层土壤未受重金属污染。通过主成分分析 (PCA)，确定了两个主成分，它们占变异总变化的 68%。决定主要成分的变量是土壤有机碳 (TOC)、总氮 (TN)、TS 和硫酸盐 (SO ₄ ²⁻ ) 的含量，Mn、Zn 的土壤含量、Cu _、 Mn植物的有效形态，以及针中铜、铁的含量。