Microbial transformation of nitrogen compounds in soils of the southern taiga

The intensity of the processes of nitrogen mineralization, fixation, and denitrification was assessed in the high-moor peat gley, white-podzolic, pale-podzolic, burozem, low-moor peat, and soddy-gley soils of the Central Forest Biosphere Reserve (CFBR). The actual and potential activities of the nit...

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Bibliographic Details
Published in:Eurasian soil science 2006-11, Vol.39 (11), p.1233-1237
Main Authors: Grishakina, I. E., Trofimov, S. Ya, Stepanov, A. L., Dorofeeva, E. I.
Format: Article
Language:English
Subjects:
Ammonification
Biosphere
Chromatography
Denitrification
Fixation
Ion-selective electrodes
Mineralization
Nitrogen
Nitrogen fixation
Organic matter
Organic nitrogen
Peat
Peat soils
Soils
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Summary:The intensity of the processes of nitrogen mineralization, fixation, and denitrification was assessed in the high-moor peat gley, white-podzolic, pale-podzolic, burozem, low-moor peat, and soddy-gley soils of the Central Forest Biosphere Reserve (CFBR). The actual and potential activities of the nitrogen fixation and denitrification were determined using the gas-chromatographic method, and the intensity of the ammonification was determined using ion-selective electrodes. The maximum intensity of the nitrogen fixation was observed in the low-moor peat and soddy-gley soils, which are characterized by a high content of organic matter. High denitrification activity was found in the low-moor peat soil (0.31 nmol N sub(2)O/g per h); this was determined by the excessive moistening of this soil. The processes of organic nitrogen mineralization were the most intensive in the upper (L and F) subhorizons of the litter.
ISSN:1064-2293
1556-195X
DOI:10.1134/S1064229306110111