Kinetics of microbial respiration and nitrogen mineralization in Great Lakes forests

D. R. Zak, D. F. Grigal, L. F. Ohmann

Research output: Contribution to journalArticlepeer-review

53 Scopus citations


Rates were measured at which C and N were released from labile organic matter within the forest floor and mineral soil of jack pine, red pine, balsam fir, sugar maple, and quaking aspen forests. Samples were assayed using a long-term laboratory incubation and pools and rate constants were compared among forests. Labile (respired) C pools in forest floor ranged from four to six times less than that measured in mineral soil. Annual in situ estimates of microbial respiration and N mineralization were far less than respired C and mineralized N pools, suggesting that only a fraction of labile soil organic matter is annually metabolized within these forests. Local climate appears to be an important factor. -from Authors

Original languageEnglish (US)
Pages (from-to)1100-1106
Number of pages7
JournalSoil Science Society of America Journal
Issue number4
StatePublished - Jan 1 1993
Externally publishedYes

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