Trace gas fluxes and nitrogen availability in a deciduous forest after one year of elevated soil temperatures

Conference · Tue Jun 01 00:00:00 EDT 1993 · Bulletin of the Ecological Society of America; (United States)

OSTI ID:6244767

Peterjohn, W; Newkirk, K; Melillo, J; Steudler, P; Aber, J ^[1]

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1. West Virginia Univ., Morgantown (United States) The Ecosystems Center, Woods Hole, MA (United States) Univ. of New Hampshire, Durham (United States)

We initiated a field experiment in July of 1991 to determine the response of a deciduous forest to elevated soil temperatures. From July 1991 through June 1992, CO[sub 2] fluxes from control, disturbance control, and heated plots were 711, 791, and 1113 g C/m[sup 2]*yr, respectively. Over the period from July to November 1991, CO[sub 2] fluxes increased 47% due to warming. However, during the same period in 1992, CO[sub 2] fluxes increased only 9% due to warming. These results suggest that heating may have significantly reduced the amount of labile carbon in the soils of the heated plots. Heating also increased CH[sub 4] uptake by 0.21 9 C/m[sup 2]*yr and doubled net N mineralization rates. Unlike CO[sub 2] emissions, the changes in CH[sub 4] uptake and net N mineralization persisted throughout the first year of the experiment.

• OSTI ID: 6244767
• Report Number(s): CONF-930798-; CODEN: BECLAG
• Journal Information: Bulletin of the Ecological Society of America; (United States), Vol. 74:2; Conference: 78. annual Ecological Society of America (ESA) meeting, Madison, WI (United States), 31 Jul - 4 Aug 1993; ISSN 0012-9623
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CARBON
ECOLOGICAL CONCENTRATION
HEATING
TEMPERATURE DEPENDENCE
SOILS
SOIL CHEMISTRY
CARBON DIOXIDE
FORESTS
METHANE
MINERALIZATION
NITROGEN
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMISTRY
ELEMENTS
HYDROCARBONS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
540220* - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)