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Annual nitrous oxide fluxes from temperate forest soils in the northeastern United States

Journal Article · · Journal of Geophysical Research; (USA)
; ;  [1];  [2]
  1. Ecosystems Center, Woods Hole, MA (USA)
  2. Univ. of New Hampshire, Durham (USA)
Nitrous oxide (N{sub 2}O) fluxes were measured from soils in a red pine plantation and a mixed hardwood stand in the northeastern US. On an annual basis, the pine stand had an efflux of 0.010 {plus minus} 0.015 kg N/ha/yr and the hardwood stand had an efflux of 0.017 {plus minus} 0.017 kg N/ha/yr. Low net nitrification rates in both stands are suggested as the reason for the low rates of N{sub 2}O emissions. Slight seasonal trends were noted in both stands, with highest efflux rates in early summer and late fall. Both stands showed small but extended periods of uptake during summer and early fall. Diel patterns were not observed in either stand. This study suggests that on a global basis, a lower limit for N{sub 2}O emissions from temperate forests is 0.012 Tg N/yr, contributing less than 1% of the estimated total emissions from terrestrial sources.
OSTI ID:
6100014
Journal Information:
Journal of Geophysical Research; (USA), Journal Name: Journal of Geophysical Research; (USA) Vol. 95:D9; ISSN 0148-0227; ISSN JGREA
Country of Publication:
United States
Language:
English