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STUDIA BIOLOGIA - Issue no. 2 / 2002 | |||||||
Article: |
BIOCHEMICAL ACTIVITY OF SOME URBAN SOILS IN EASTERN SIBERIA. Authors: ELIZAVETA V. NAPRASNIKOVA, VALERIAN A. SNYTKO. |
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Abstract: Biochimical activity, assessed as urease activity, was determined in soils of three East Siberian towns located in the Prebaikalia: Irkutsk, Shelekhov and Sayansk. Unpolluted soils in the Olkhon Island of the Baikal Lake served for comparison. Ranges of the pH values for optimum urease activity were found to be 6.3-7.4 (in Olkhon Island soils), 7.3-7.9 (in Irkutsk soils), 7.5-8.3 (in Shelekhov soils) and 7.0-7.8 (in Sayansk soils). At the same pH or at nearly the same pH, soil urease activity presented the order: Olkhon Island > Irkutsk > Shelekhov > Sayansk. | |||||||