UREASE ACTIVITY OF SOIL MACROAGGREGARES IN QUERCUS CERRIS AND QUERCUS PETRAEA FORESTS AT THE LANDSCAPE LEVEL
Abstract
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.
About the Author
M. D. Kussainova
Kazakh Research Institute of Soil Science and Agrochemistry named after U.U. Uspanov
Kazakhstan
Kazakhstan
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Review
For citations:
Kussainova M.D. UREASE ACTIVITY OF SOIL MACROAGGREGARES IN QUERCUS CERRIS AND QUERCUS PETRAEA FORESTS AT THE LANDSCAPE LEVEL. Soil Science and Agrichemistry. 2014;(1):38-44. (In Russ.)
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