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Báo cáo lâm nghiệp: "A survey of forest pollution with heavy metals in the Natural Forest Region (NFR) Moravskoslezské Beskydy with particular attention to Jablunkov Pass"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài: A survey of forest pollution with heavy metals in the Natural Forest Region (NFR) Moravskoslezské Beskydy with particular attention to Jablunkov Pass. | JOURNAL OF FOREST SCIENCE 54 2008 2 64-72 A survey of forest pollution with heavy metals in the Natural Forest Region NFR Moravskoslezske Beskydy with particular attention to Jablunkov Pass P. Fiala D. Reininger T. Samek Central Institute for Supervising and Testing in Agriculture Brno Czech Republic ABSTRACT A survey of forest nutrition was carried out in Natural Forest Region NFR No. 40 Moravskoslezske Beskydy. The reason for this survey was the gradually worsening state of forest stands in this region and especially in a part of it - in the Jablunkov Pass. Air pollution was the suspected cause of the unfavourable development. According to methodology established for the survey of forest nutrition the samples of soil and assimilatory organs were collected at 375 sampling sites. The spatial distinctness of Jablunkov Pass was expressed on the basis of selected soil characteristics quantity of organic material exchangeable pH content of total nitrogen zinc lead chromium cadmium and of the contents of chemical elements total nitrogen magnesium zinc lead chromium cadmium in two-years-old Norway spruce needles. These analyses were done by the software Statistica. The medians of concentrations of elements in two-years-old Norway spruce needles in the area of NFR except Jablunkov Pass are Zn - 34 Pb - 0.71 Cd - 0.15 and Cr - 0.38 mg kg . In the area of Jablunkov Pass Zn - 43 Pb - 12.1 Cd - 0.25 and Cr - 0.41 mg kg . Particular attention was paid to the content of heavy metals both in the whole area of NFR and in the area of Jablunkov Pass particularly. The spatial homogeneity is disturbed by the influence of air pollution there. Markedly higher contents of zinc lead and cadmium are found in the whole soil profile in the case of chromium in the forest floor only. The distribution of heavy metal contents in the soil profile is influenced by the quantity and quality of organic matter and by the altitude of sampling sites. The higher values of medians of zinc lead and .