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001-es BibID:	BIBFORM092488
Első szerző:	Fekete István
Cím:	The relation between various detritus inputs and soil enzyme activities in a Central European deciduous forest / István Fekete, Csaba Varga, Zsolt Kotroczó, János Attila Tóth, Gábor Várbiró
Dátum:	2011
ISSN:	0016-7061
Megjegyzések:	Within the framework of Síkfőkút DIRT (Detritus Input and Removal Treatments) Project, we have been exam-ining the extent to which microbial activities of soils are influenced by detritus inputs of diverse quantities andqualities. The experimental site is located in the south part of the Bükk Mountains in North Eastern Hungary. Thisforest is a semi-natural stand (Quercetum petraeae-cerriscommunity) without forest management.The six treatments established are as follows: three treatments involving detritus removal (No Litter, No Roots,No Inputs), two treatments involving detritus duplication (Double Litter, Double Wood) and a control treatment.The study intends to present the results of saccharase and arylsulphatase activity examinations. Our hypothesiswas that detritus reduction causes significantly greater influence on soil enzyme activities than detritus increaseof the same extent.The general purpose of the project is to reveal the connection between modifications of detritus production andchanges of climatic conditions and land use. It also studies how the modifications, decreases or increases indetritus production influence organic material content, and physical, chemical or biological processes of soils.Saccharase and arylsulphatase activities were measured three and a half years after the establishment of theplots; thus having enough time for the development of different ecological conditions at our disposal. Significantdifferences were detectable between the treatments for both enzymes. Two separate groups of treatmentscould be distinguished. The treatments with additional aboveground inputs (Double Litter, Double Wood)and the control (C) revealed higher activities, while a lower?sometimes significantly lower?enzyme activitycharacterized the other three, removal treatments (No Litter, No Roots, No Inputs). As for the Double Litter, Dou-ble Wood and Control treatments, no significant difference was detectable, although the latter two revealedhigher values of enzyme activities than the former one.We found that soil moisture content was correlated with the two soil enzyme activities, especially that of thearylsulphatase. A much weaker correlation was found between the enzyme activities and soil moisture contentin the soils that were wetter and poorer in substrates (No Roots and No Inputs treatments). Seasonal differencesalso involved the diverse moisture contents, while the effect of temperature could hardly be observed duringthe examinations (due to the nature of methods). In the case of both enzymes, the highest activities weredetected during the wetter period, in spring.The three detritus removal treatments influenced enzyme activities in different ways.As for saccharase, it was the removal of belowground detritus that caused the greatest influence. However, inthe case of arylsulphatase, it was the soil moisture content that influenced activity to the greatest extent indetritus removal treatments.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Saccharase Arylsulphatase Enzyme activity Detritus decomposition Detritus manipulation
Megjelenés:	Geoderma. - 167-168 (2011), p. 15-21. -
További szerzők:	Varga Csaba (agrár Nyíregyháza) Kotroczó Zsolt (1975-) (biológus, ökológus) Tóth János Attila (1945-) (ökológus) Várbíró Gábor (biológus)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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