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- Title
Effect of Contrasting Trophic Conditions on the Priming Effect in Gray Forest Soils.
- Authors
Zhuravleva, A. I.; Alifanov, V. M.; Blagodatskaya, E. V.
- Abstract
Priming effects initiated by the addition of 14C glucose have been compared for humus horizons of soils existing under continuous input of fresh organic substrates and for buried soil horizons, in which entering of organic matter has been essentially limited. The effect of microrelief on the manifestation of priming effect in the humus horizons of gray forest soil on microhigh and in microlow has been estimated. Humus horizon in soils on microhigh, not activated by glucose, produced two times more CO2 in comparison with soils of microlow. However, the introduction of glucose canceled the effect of microrelief on CO2 emission. The intensity of absolute priming effect correlated with the Corg pool, initial microbial biomass, and enzyme activity, decreasing from humus horizons to the buried ones, and did not depend on microrelief. The effect of microrelief was observed, when assessing the priming effect relative to control (soil not activated by glucose): the value of relative priming effect was 1.5 times greater in A horizon of gray forest soil in microlow in comparison with that on microhigh being the result of increasing activity of enzymes.
- Subjects
ORGANIC compounds; GLUCOSE analysis; SINGLE cell lipids; HUMUS analysis; CARBON compounds
- Publication
Eurasian Soil Science, 2018, Vol 51, Issue 2, p204
- ISSN
1064-2293
- Publication type
Article
- DOI
10.1134/S106422931802014X