Effect of pollution in the flora , microflora and soil enzyme activities near to the Upper-Tisza

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Article Title:	Effect of pollution in the flora , microflora and soil enzyme activities near to the Upper-Tisza
Authors:	Judit L. Halász1*, Zsolt Kotroczo1, Erzsebet Krausz2, Márta D. Tóth1, Sándor Balázsy1
Affiliation:	¹ Institute of Biology, College of Nyíregyháza, Nyíregyháza, Hungary 2Department of Environmental Science, College of Nyíregyháza, Nyíregyháza, Hungary
Abstract:	Our main purpose was to study the flora, the microflora and the enzyme activity in soil of polluted areas, and to identify the factors affecting them. Besides studying the percentage distribution of species in the soil, we determined the total number of culturable microbes as well. Enzyme activities of phosphatase, invertase, dehydrogenase, and cellulase, were also measured in the samples of the contaminated soils. Total heavy metal content in soil samples was determined by analysis of Cd, Cu, Fe, Pb and Zn using XRF technique. According to our examinations, ratio of Actinomyces and Pseudomonas genera decreased while the Bacillus sp. was found to be increased in the soils. Wastes reduce the activity of soil enzymes (cellulase, phosphatase, invertase), however, the activity of dehydrogenase increase.
Keywords:	enzyme activity, soil microorganisms, plants, contaminated soil
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*Correspondence:	Judit L. Halász. College of Nyíregyháza, Institute of Biology, Nyíregyháza, Nyíregyháza-4400, Sóstói út 31/b. Hungary, email: halaszj@nyf.hu