kaz65Почвоведение и агрохимияSoil Science and Agrichemistry1999-740X2959-3433Казахский научно-исследовательский институт почвоведения и агрохимии имени У.У. Успановаkaz65-393Research ArticleБиология почвSoil biologyUREASE ACTIVITY OF SOIL MACROAGGREGARES IN QUERCUS CERRIS AND QUERCUS PETRAEA FORESTS AT THE LANDSCAPE LEVELKussainovaM. D.madgu@indox.ruKazakh Research Institute of Soil Science and Agrochemistry named after U.U. UspanovKazakhstan201407112022013844Copyright © Kussainova M.D., 20222022Kussainova M.D.Kussainova M.D.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://journal.soil.kz/jour/article/view/393

Основная цель данного исследования была в определении измененний активности уреазы в почве в зависисмости от макроагрегатного состава и элементов рельефа лесных почвах на зональном лесном сообществе Quercus cerris and Quercus petraea. Пробы почвы были отобраны в районе Коджада, города Самсун, Турции с пяти участков, т. е. с вершины, склона, откос 1, откоса 2 и у подножья склона. Почвенные образцы были просеяны сухим методом разделения на шесть фракций, а затем, была проанализирована активность уреазы. По результатам исследования было определено что, топография повлияла на размер макро агрегатов и на активность уреазы в агрегатах на всех ландшафтных участках, за исключением откоса 2. Во всех образцах почв содержание макроагрегатов, во фракциях > 6,3 мм и 2,00-4,75 мм было более высокое, чем в других фракциях, активность уреазы была высокой в макро агрегатах фракции 1,00-1,40 мм у подножья склона, чем в других фракциях.

The main objective of this study was to determine changes in soil urease activity in natural macroaggregates development along a slope in Q. cerris and Q. petraea forest soils. This study was carried out in Kocadag, Samsun, Turkey. Four landscape positions i.e., summit, shoulder, back slope 1, back slope 2 and foot slope, were selected. For each landscape position, soil macroaggregates were separated into six aggregate size classes using a dry sieving method and then urease activity was analyzed. In this research, topography influenced the macroaggregate size and urease activity within the aggregates. At all landscape positions, the contents of macro aggregates (especially > 6.3 mm and 2.00-4.75 mm) in all soil samples were higher than other macro aggregate contents. In foot slope position, the soils had generally the higher urease activity than the other positions at all landscape positions. In all positions, except for shoulder, urease activity was greater macro aggregates of < 1 mm than in the other macro aggregate size.

topographysoilaggregateurease activityfermentsforest soilReferencesBeare M.H., Bruce R.R. A comparison of methods for measuring water-stable aggregates: Implications for determining environmental effects on soil structure // Geoderma. -1993.-Vol.56.-P. 87-104.Beare M.H., Bruce R.R. A comparison of methods for measuring water-stable aggregates: Implications for determining environmental effects on soil structure // Geoderma. -1993.-Vol.56.-P. 87-104.Albrecht A., Angers D.A., Beare М., Blanchart E., Soil aggregation, soil organic matter and soil biota interactions : implications for soil fertility recapitalization in the tropics. 16th World Congress of Soil Science. 20 August 1998, Scientific registration n: 212, Symposium n: 12.Albrecht A., Angers D.A., Beare М., Blanchart E., Soil aggregation, soil organic matter and soil biota interactions : implications for soil fertility recapitalization in the tropics. 16th World Congress of Soil Science. 20 August 1998, Scientific registration n: 212, Symposium n: 12.Hackl E, Bachmann G, Zechmeister-Boltenstern S. Microbial nitrogen turnover in soils under different types of natural forest // Forest Ecology and Management. - 2004. -Vol. 188. -P. 101-12.Hackl E, Bachmann G, Zechmeister-Boltenstern S. Microbial nitrogen turnover in soils under different types of natural forest // Forest Ecology and Management. - 2004. -Vol. 188. -P. 101-12.Kizilkaya R., A$kin Т., Bayrakli B., Saglam M. Microbiological characteristics of soils contaminated with heavy metals // European Journal of Soil Biology. - 2004.-Vol.40. - P. 95-102.Kizilkaya R., A$kin Т., Bayrakli B., Saglam M. Microbiological characteristics of soils contaminated with heavy metals // European Journal of Soil Biology. - 2004.-Vol.40. - P. 95-102.A§kin Т., Kizilkaya R., Organic and microbial biomass carbon contents of aggregates in a toposequence of pasture Soils //Asian Journal of Chemistry. - 2006. lVol. 8(2). - P. 1500-1508.A§kin Т., Kizilkaya R., Organic and microbial biomass carbon contents of aggregates in a toposequence of pasture Soils //Asian Journal of Chemistry. - 2006. lVol. 8(2). - P. 1500-1508.Dengiz 0.,Kizilkaya R., Erkofak A., Durmu$ M. Variables of Microbial Response in Natural Soil Aggregates for Soil Characterization in Different Fluvial Land Shapes // Geomicrobiology Journal. - 2013. - Vol. 30. - P. 100-107.Dengiz 0.,Kizilkaya R., Erkofak A., Durmu$ M. Variables of Microbial Response in Natural Soil Aggregates for Soil Characterization in Different Fluvial Land Shapes // Geomicrobiology Journal. - 2013. - Vol. 30. - P. 100-107.Kussainova М., Durmu$ М., Erkofak A., Kizilkaya R. Soil dehydrogenase activity of natural macro aggregates in a toposequence of forest soil. // Eurasian Journal of Soil Science. -2013.-Vol. 2.-P. 69-75.Kussainova М., Durmu$ М., Erkofak A., Kizilkaya R. Soil dehydrogenase activity of natural macro aggregates in a toposequence of forest soil. // Eurasian Journal of Soil Science. -2013.-Vol. 2.-P. 69-75.Madsen E. Impacts of agricultural practices on subsurface microbial ecology // Advances in Agronomy. -1995. - Vol. 54. -P. 1-67.Madsen E. Impacts of agricultural practices on subsurface microbial ecology // Advances in Agronomy. -1995. - Vol. 54. -P. 1-67.Pinck L. A., Allison F. E. Adsorption and release of urease by and from clay minerals // Soil Sci. -1961. - Vol. 91. - P. 183-8.Pinck L. A., Allison F. E. Adsorption and release of urease by and from clay minerals // Soil Sci. -1961. - Vol. 91. - P. 183-8.McLaren A.D. Enzyme activity in soils sterilized by ionising radiation and some comments on micro-environments in nature/ ed. N. E. Gibbons. // Microbiology. - University of Toronto Press. -1963. - Vol. 8. - P. 221-9.McLaren A.D. Enzyme activity in soils sterilized by ionising radiation and some comments on micro-environments in nature/ ed. N. E. Gibbons. // Microbiology. - University of Toronto Press. -1963. - Vol. 8. - P. 221-9.Burns R.G. Enzymes in soil: location and a possible role in microbial ecology // Soil Biol. Biochem. -1982. - Vol. 14. - P. 421-5.Burns R.G. Enzymes in soil: location and a possible role in microbial ecology // Soil Biol. Biochem. -1982. - Vol. 14. - P. 421-5.Pettit N.M., Smith A.R.J., Freedman R.B., Burns R.G. Soil urease: activity, stability and kinetic properties // Soil Biol. Biochem. -1976. - Vol. 8. - P. 479-84.Pettit N.M., Smith A.R.J., Freedman R.B., Burns R.G. Soil urease: activity, stability and kinetic properties // Soil Biol. Biochem. -1976. - Vol. 8. - P. 479-84.Davis P.H. Flora of Turkey: and the East Aegean Islands. - Edinburgh University Press.1965.Davis P.H. Flora of Turkey: and the East Aegean Islands. - Edinburgh University Press.1965.Bouyoucos G.J. A recalibration of the hydrometer method formaking mechanical analysis of soils//Agronomy Journal. -1951.-Vol.43.-P. 435-438.Bouyoucos G.J. A recalibration of the hydrometer method formaking mechanical analysis of soils//Agronomy Journal. -1951.-Vol.43.-P. 435-438.

The authors declare that there are no conflicts of interest present.