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Effects of Nitrate and Labile Carbon on Denitrification of Southern Temperate Forest Soils Chilean J. Agric. Res.
Pérez,Cecilia A; Carmona,Martín R.; Fariña,José M.; Armesto,Juan J..
The pressure for anthropogenic land use changes and logging of temperate forests in southern Chile is rapidly increasing, with its potentially high impacts on the capacity of soils to retain important limiting elements. We tested the hypotheses that logging increases the denitrification rates and nitrate and C limitation of denitrifiers activity would be higher in soils of unlogged, old-growth forests than in soils of logged forests. Potential denitrification rates were estimated by the acetylene inhibition assay in intact soil cores in laboratory short-term aerobic incubations using the following treatments: 0.7 mmol NO3-N addition, the same nitrate addition plus 23.3 mmol C-glucose, and controls (no additions) with and without 10% v/v acetylene. Forest...
Tipo: Journal article Palavras-chave: Acetylene inhibition assay; Lowland evergreen forests; Selective logging; Nitrogen availability.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200008
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