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Depositions from precipitation in the forest ecosystem of pedunculate oak and their possible impacts on the stability of the lowland forests in Croatia
2002
Tikvic, I. (University of Zagreb, Zagreb (Croatia). Faculty of Forestry) | Seletkovic, Z. | Sojat, V. | Znidaric, G.
The paper deals with the results of chemical analyses of the precipitation collected with the bulk method in and out of the pedunculate oak forest near Lipovljani in Croatia, for the period 1997-2001. A considerable higher total annual deposition of the majority of analysed determinants has been found in the forest. The results point to the importance and influence of the forest cover on the reception and distribution of dry and wet pollution in the forest ecosystem of pedunculate oak
显示更多 [+] 显示较少 [-]Soil microorganisms suppressed by emissions of a magnesite plant in the Slovak Republic
2002
Kautz, G. (University of Cologne, Cologne (Germany). Institute of Zoology) | Zimmer, M. | Zach, P.: Kulfan, J. | Topp, W. | Zelinkova, D.
Soil microorganisms are important for plant growth and beneficial for the nutrition and the development of a variety of soil animals. Together with soil invertebrates they also improve nutrients availability in soils. Although not frequent in Europe , magnesite emissions can affect the nutritional status of the vegetation and the survival of soil microorganisms as well as other biota locally, and thus may be crucially responsible for the quality of the entire biotic system. The observed gradients of soil microbial characteristics reflect the physico-chemical properties of soils around the magnesite plant and may be used to predict transitory changes during amelioration
显示更多 [+] 显示较少 [-]Long-term effects of pollutants on forest vegetation in Central Spis region
2002
Mankovska, B. (Forest Research Institute, Zvolen (Slovak Republic))
Pollution problems in forest ecosystems resulting from 100 year long operation of three smelter complexes in Central Spis are reviewed. Original data are presented with respect to temporal and spatial trends of nitrogen, sulphur and heavy metal pollution, and elemental composition of individual aerosols on leaf surface. Spruce stands in Central Spis are loaded by pollutants 1.7 times more than are critical values and the highest concentrations of As, Fe, Hg, and N were found in this region. Low Tatra National Park was the cleanest region where no element maxima were found
显示更多 [+] 显示较少 [-]Bioindication of immmission load lowering with change of the aluminium production technology
2002
Mankovska, B. (Forest Research Institute, Zvolen (Slovak Republic))
Problems of the environment pollution in Ziarska basin are connected with the operation of Aluminium plant from 1953. After replacement of old production technology by a a new one by Norwegian company Hydro Aluminium emission of dust of Al2O3 dropped from 766 tons per year to 243 tons per year, emission of fluorides dropped from 847 to per year to 65.9 tons per year and of SO2 have increased from 716 to 974 tons per year. The mentioned reduction of emission reflected markedly in a great reduction of vegetation loading by fluorine. In the year 2001 we found statistically sifnificant difference for total Ksupz (coefficient of loading) in coniferous and broadleaved tree species in A polution zone in comparison with the zone B, C and D
显示更多 [+] 显示较少 [-]Spatial distribution of ectomycorrhizas in Scots pine stand influenced by long-term pollution from copper industrial region in Poland
2002
Leski, T. | Rudawska, M. (Polish Academy of Sciences, Kornik (Poland). Institute of Dendrology)
A long-term effect of heavy metal pollution originating from Copper Smelter and Refinery Division Glogow on a Scots pine stand was carried out in the protective zone surrounding the smelting/refining plant. The effect of enhanced Cu, Pb and Zn availability on the structure of ectomycorrhizal communities was assessed above- and below-ground among several subplots dominated by Scots pine (Pinus sylvestris). Three different approaches were performed: sporocarp inventories, morphological analysis of ectomycorrhizal roots and molecular techniques based on PCR-RFLP method. Only a few sporocarps of ectomycorrhizal species were observed
显示更多 [+] 显示较少 [-]The response of the forest ecosystem to the reduction of TPP SO2 emissions with emphasis on the nutrient cycling
2002
Simoncic, P. | Kalan, P. | Kraigher, H.: Levanic, T. | Urbancic, M. | Vilhar, U. (Slovenian Forestry Institute, Ljubljana (Slovenia))
Selected parameters of the nutrients cycling process for forest ecosystem were investigated in period 1989-2000 at Prednji Vrh in the area affected by the Sostanj thermal power station. In the year 1995 desulphurization of exhaust gases from the TPP Sostanj caused considerable reduction of SO2 emission. We could not find serious tree-ring width decline in spruce. In the year 1956 and 1978 tree-ring widths rapidly declined. In the year 1995 slight icrement recovery could be observed. One probably climatically (drought) induced pointer year (1992) occurred
显示更多 [+] 显示较少 [-]Monitoring of sulphur load in black pine (Pinus nigra Arn.) cultures at various distances from Plomin power plant, Istria, Croatia
2002
Seletkovic, I. | Potocic, N. (Forest Research Institute, Jastrebarsko (Croatia))
Black pine (Pinus nigra Arn.) was chosen as bioindication species for several reasons. Black pine stands are located throughout Istria, at various distances from the above mentioned power plant. Black pine does not shed needles in the autumn, thus prolonging their exposure to sulphur dioxide emissions. Also neeedles stay on branches for several years, giving us the possibility to analyse the effect on older needles
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