Microbial biomass respiration response to added carbon and nitrogen as an indicator of nitrogen availability in forest soils

The relationship between a microbial biomass respiration response to added C and N (NIR) and N mineralized in buried-bags in the field was examined. Significant negative correlations were found between organic horizon NIR values and the amount of mineralized N measured at various times, however no s...

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Bibliographic Details
Published in:Canadian journal of soil science 1998-11, Vol.78 (4), p.607-610
Main Authors: Au, W, Fyles, J.W, Cote, B
Format: Article
Language:English
Subjects:
biological activity in soil
biomass
carbon
forest soils
glucose
measurement
mineralization
nitrogen
nutrient availability
nutrient solutions
organic horizons
respiration
soil amendments
soil microorganisms
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Summary:The relationship between a microbial biomass respiration response to added C and N (NIR) and N mineralized in buried-bags in the field was examined. Significant negative correlations were found between organic horizon NIR values and the amount of mineralized N measured at various times, however no significant correlations were found in the mineral horizon. These results suggest that NIR has potential for use as a physiological indicator of forest floor N availability. Key words: Microbial biomass, respiration, SIR, N mineralization
ISSN:0008-4271
1918-1841
DOI:10.4141/S97-102