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Activity of denitrification and dynamics of N 2 O release in soils under six tree species and grassland in central Siberia
Author(s) -
Menyailo Oleg V.,
Huwe Bernd
Publication year - 1999
Publication title -
journal of plant nutrition and soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 1436-8730
DOI - 10.1002/(sici)1522-2624(199910)162:5<533::aid-jpln533>3.0.co;2-b
Subject(s) - larch , denitrifying bacteria , chemistry , denitrification , grassland , picea abies , soil water , nitrogen , environmental chemistry , nitrogen cycle , forestry , botany , agronomy , ecology , biology , organic chemistry , geography
To clarify the influence of tree species on N 2 O emissions, soil chemical properties, initial concentrations of denitrifying enzymes and dynamics of N 2 O emissions were studied in the laboratory under standardized conditions in soil samples from artificially afforested spots with spruce, birch, pine, aspen, larch, cedar and under grass as control. 26 years of tree development caused changes not only in soil chemistry but also in persistence and dynamics of denitrifying enzymes. Total amount of N 2 O release correlated more with the initial status of N 2 O‒reductase than with N 2 O‒producing enzymes. C:N ratio was the main chemical factor explaining variation of N 2 O emission between species. At equal level of atmospheric N‒deposition, N 2 O release will increase in the order: grassland < larch < pine < spruce < cedar < aspen < birch. These data may be useful to predict N 2 O losses from forest ecosystems in Siberia with different dominant tree species.