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Assessment of exceedance of critical levels for ozone in Slovak forest ecosystems
2002
Pavlendova, H. | Mindas, J. (Forest Research Institute, Zvolen (Slovak Republic))
For assessment of ozone risks to forests we used ozone thresholds and air quality guidelines set by several international organizations for protection of vegetation. We also used spatial modelling for estimation of basic ozone characteristics. Calculations of models were performed in the environment of the programme Idrisi 32. The spatial coverage of ozone monitoring network in the Slovak Republic has insufficient density. Ozone data come from two sources; SHMI/EMEP database of ozone concentrations from 4 monitoring stations and ozone database of FRI from 3 monitoring stations
Afficher plus [+] Moins [-]Science and policy - to what extent does long-term monitoring of forest ecosystems contribute to policy relevant air pollution issues?
2002
Haussmann, T. (Federal Ministry of Consumer Protection, Food and Agriculture, Bonn (Germany)) | Fischer, R. | Riebau, A.
Following the objective to provide an overview on the spatial and temporal variation in forest condition on a European scale, an extensive systematic survey on more than 6000 so called Level I plots throughout Europe is carried out. Results show a recuparation of crown condition in the mid nineties and a resuming deterioration with nearly a quarter of the sample trees classified as damaged in 2001. Results of statistical evaluations explain the observed variation mainly by weather extremes, insects, fungi and indirect effects of air pollutants via soil acidification or changes in the nutritional status of trees
Afficher plus [+] Moins [-]Epiphytic lichens as air quality indicators in forest stands
2002
Mavsar, R. (Slovenian Forestry Institute, Ljubljana (Slovenia)) | Batic, F. | Jeran, Z.
An outline of the analyses of experimental material from the 2000 moss survey is given. It includes some selected areas in Central Russia, Bosnia, Bulgaria, Romania, Slovakia and Serbia. Applying this methodology to areas of Central and Eastern Russia, not yet covered by the European moss surveys, will significantly broaden our understanding of air pollution in Europe
Afficher plus [+] Moins [-]Ectomycorrhizal associations in Norway spruce stands influenced by long lasting air pollution (Silesian Beskid Mountains, Poland)
2002
Rokicka-Kieliszewska, B. (Polish Academy of Sciences, Kornik (Poland). Institue of Dendrology) | Rudawska, M. | Staszewski, T. | Kurcynska, E. | Karlinski, L.
Norway spurce (Picea abies L.) is the dominating tree species in the Silesian Beskid Mountains. The mountain forests are under severe climatic conditions, such as low temperatures, short growing season, strong winds, high annual precipitation, a long-time snow cover. The forests have been exposed also for about half century to gaseous and dust pollutants emitted by large industrial centres in the Czech Republic, Germany and Poland. Anthropogenic impacts may influence negatively the growth of tree fine roots, can develop ectomycorrhizas and alter the communities of ectomycorrhizal fungi and other microorganisms in soil. Ectomycorrhizal communities at the both forest sites were dominated by the same two morphotypes, which were further studied using the PCP-RFLP analysis for identification of the fungal species
Afficher plus [+] Moins [-]Effects of preparatory stands on forest site restoration
2002
Remes, J. | Podrazsky, V. (Czech University of Agriculture, Prague (Czech Republic). Faculty of Forestry)
The main aims of the preparatory stands in air pollution areas are growth development, successfull dynamics of the plants and fast creation of the stand microclimate with favourable effect on soil conditions. This process is documented by height and diameter increment. The results confirm different growth dynamics of the particular species. Larch is the species with the best growth dynamics of selected species on experimental plots. On the other hand, beech is the worst species for reforestation in this condition. One of the causes could be damage by frost
Afficher plus [+] Moins [-]Evaluation of Norway spruce forest plantation under air pollution load after the application of a slow-release forest tablet fertilizer Silvamix MG
2002
Sarvas, M. | Tucekova, A. | Seben, V. (Forest Research Institute, Zvolen (Slovak Republic))
Fertilization plays an essential role in forest management on the site being under air pollution load in last years. The soil acidity due to the acid fall-out is markedly worse and at the same time the concentration of calcium, phosphorous, potassium and magnesium are decreasing. The fertilization besides positive influence on height increment could help in adaptation process of plants establishment after transplanting and it can eliminate negative ifluence of anthropogenic conditions of the environmnet
Afficher plus [+] Moins [-]Long-term changes of soil chemical parameters in forests of Saxony (Germany)
2002
Raben, G. | Symossek, F. | Katzschner, W. | Gemballa, R. | Karst, H. | Kohler, S. | Nowatzki, O. (Saxon State Institute of Forestry, Pirna (Germany))
Taking into account the results of environmental monitoring in forest ecosystems (European Level I- and II-Programme) showing high degrees of soil acidification and still a widespread exceedance of critical loads by deposited sulphur and nitrogen compounds, the programme of differentiated forest protection liming should continue with site specific doses. On the other hand the programme to restore forest ecosystems with higher stability and to a large extent balanced nutrient cycles has to be carried out in order to minimize internal acid-generating processes
Afficher plus [+] Moins [-]Restoration of functioning forest ecosystems in the Krusne Hory Mts.
2002
Podrazsky, V. | Karas, J. (University of Agriculture, Prague (Czech Republic). Faculty of Forestry)
Research project main aims are coordinating, summarizing and making interpretation from the research results from the region of interest. Further targets are to focus, concentrate and promote research activities of relevant departments of the Faculty of Forestry in this area. Intention of organising institution is to create a material, grouping together research results available from the Ore Mts., forming a basis for results exchange and launching the data as well as for results utilisable in the forest practice in this region
Afficher plus [+] Moins [-]Effect of long-term contrasting anthropogenic emission on ectomycorrhizal diversity of Scots pine stands in Poland
2002
Rudawska, M. (Polish Academy of Sciences, Kornik (Poland). Institute of Dendrology) | Leski, T. | Kieliszewska-Rokicka, B. | Staszewski, T.
Ectomycorrhizal types were quantified in soil cores taken from 0-5 cm horizon. Nine ectomycorrhizal types were distinguished on roots of pines grown close to the copper smelter, 17 on trees grown in vicinity of aluminium smelter versus 25 found on trees grown near phosphate fertilizer plant and from control trees. Molecular studies were performed to give a greater resolution of how emission from different sources influenced mycorrhizal fungal community of Scots pine
Afficher plus [+] Moins [-]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
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