64 research outputs found

    A földrajz és a környezetvédelem kapcsolata

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    A fenntarthatĂł fejlƑdĂ©s nĂ©hĂĄny vilĂĄgmĂ©retƱ gondjĂĄrĂłl = Some global problems of sustainable development

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    The paper focuses on the effectiveness of the Action Plan accepted at the World Summit on Sustainable Development in Johannesburg. The Action Plan aims at the solution of some of the debated global problems. So far, no worthwhile results can be detected in the winding-up of poverty and starvation. The rich countries usually do not transfer the expected 0.7% of their national income into the relief fund and the solidarity fund is not efficient in its work either. The favourable impacts of globalisation do not prevail in the poor countries because their institutional system is underdeveloped, political insecurity predominates them and there is no sufficient qualified labour force. A modest success of the global energy policy is the coming into force of the Kyoto Protocol. The global energy structure, however, requires more significant changes in favour of the renewable energies – if the aim is to mitigate the scale of climate change

    PontszerƱ szennyezƑ forrĂĄsok tĂĄjra gyakorolt hatĂĄsĂĄnak vizsgĂĄlata = Examinations on the effects on landscapes of point-sources of pollution

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    A talajszennyezƑ forrĂĄsokat MikepĂ©rcs Ă©s Újszentmargita telepĂŒlĂ©si folyĂ©konyhulladĂ©k-leĂŒrĂ­tƑje esetĂ©ben vizsgĂĄltuk. E szennyezƑ forrĂĄsok körĂŒl bĂ©lĂ©scsövezett furatokat lĂ©tesĂ­tettĂŒnk. A talaj- Ă©s vĂ­zmintĂĄk alapjĂĄn megĂĄllapĂ­tottuk, hogy bĂĄr vannak eltĂ©rĂ©sek, ĂĄltalĂĄban hasonlĂł szennyezĂ©si tendenciĂĄk tapasztalhatĂłk. MindkĂ©t helyszĂ­nen jelentƑs ammĂłnium- Ă©s nitrĂĄt-szennyezĂ©st mutattunk ki, a legjobb szennyezĂ©s-terjedĂ©si indikĂĄtornak pedig, a Na+ bizonyult. A szennyezĂ©s nĂ©hĂĄny szĂĄz mĂ©teres tĂĄvolsĂĄgig volt kimutathatĂł. A pontszerƱ lĂ©gszennyezƑ forrĂĄsok közĂŒl a pĂĄlhĂĄzai perlitbĂĄnya szennyezƑ hatĂĄsĂĄt vizsgĂĄltuk. MegĂĄllapĂ­tottuk, hogy csak a bĂĄnya nĂ©hĂĄny szĂĄz mĂ©teres körzetĂ©n belĂŒl kell jelentƑsebb porterhelĂ©ssel szĂĄmolnunk. Ebben a zĂłnĂĄban elƑfordultak az egĂ©szsĂ©gĂŒgyi hatĂĄrĂ©rtĂ©ket meghaladĂł ĂŒlepedƑ pormennyisĂ©gek, a bĂĄnyĂĄtĂłl 1 km-nĂ©l tĂĄvolabb viszont mĂĄr nem tapasztaltunk hatĂĄrĂ©rtĂ©k tĂșllĂ©pĂ©st, igaz, a szennyezƑ hatĂĄs mĂ©g 2-3 km tĂĄvolsĂĄgban is egyĂ©rtelmƱen kimutathatĂł volt. MegĂĄllapĂ­tĂĄst nyert, hogy a meteorolĂłgiai viszonyok jelentƑsen befolyĂĄsoljĂĄk a porszennyezĂ©s alakulĂĄsĂĄt. | We examined the soil-pollutant sources in the case of the communal sewage deposition sites in MikepĂ©rcs and Újszentmargita. Around these sources we established boreholes with drill-pipes. According to the water and soil samples we stated that although there are differences, in general, similar tendencies can be discovered. We detected significant ammonium and nitrate pollution in both sites, and we found out that the best indicator for the spreading of the pollution is the Na+. The pollution could be evinced in a few hundred meters from the sources. Of the point-sources of the air-pollution we examined the effects of the perlite-mine in PĂĄlhĂĄza. We found that there is more remarkable dust-load only in a few hundred meter zone around the mine. In this zone the amount of the settling dust exceeded the hygienic limit, farther than 1 km from the mine there were not higher value than the hygenic limit, but it is true that the pollutant effect could be unambiguously pointed at 2-3 km distance as well. It was proved that the weather condition notably influences the dust pollution

    INTERRELATION AMONG PRECIPITATION AND ELEMENTCONTENT OF GRAPE VITIS VINIFERA L. CV. KÉKFRANKOS, GROWN IN DIFFERENT TERROIRS

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    Total nutrient content of soils and quantity of potentially available part in plants are determined in this study. Main affecting factors of nutrient uptake might be the geochemical conditions of soils and the applied agro-technological methods, while the real uptake of plants can be influenced by precipitation and evaporation conditions beside the rootstock and the used grafted scions. The element content of grape berries of Vitis vinifera L. KĂ©kfrankos cultivar was studied in identical rootstocks and scions at different production areas in Northern Hungary, during two consecutive years with somehow contrasting natural precipitation. Significant effect of the precipitation was found on the elements-uptake by the plants in general. Furthermore, it was also found, that the role of production area becomes increasingly important in grape production and quality, as well. Higher precipitation resulting greater elemental content and variability in comparison with the drier years
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