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RECORD NUMBER: 151 OF 4330

OLS Field Name OLS Field Data
Main Title Aspects of Spatial and Temporal Aggregation in Estimating Regional Carbon Dioxide Fluxes from Temperate Forest Soils.
Author Kicklighter, D. W. ; Melillo, J. M. ; Peterjohn, W. T. ; Rastetter, E. B. ; McGuire, A. D. ;
CORP Author Marine Biological Lab., Woods Hole, MA. Ecosystems Center. ;New Hampshire Univ., Durham. Inst. for the Study of Earth, Oceans and Space.;Environmental Research Lab., Athens, GA.;National Inst. for Global Environmental Change, Cambridge, MA. Northeast Regional Center.
Publisher c1994
Year Published 1994
Report Number EPA-R-817734; EPA/600/J-94/250;
Stock Number PB94-174729
Additional Subjects Global ; Climatic changes ; Soils ; Forestry ; Carbon dioxide ; Atmospheric temperature ; Sensitivity ; Flux rate ; Temporal distributions ; Measurement ; Regions ; Air pollution ; Fossil fuels ; Spatial distribution ; Mathematical models ; Errors ; Estimates ; Graphs(Charts) ; Tables(Data) ; Reprints ;
Holdings
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Status
NTIS  PB94-174729 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/01/1994
Collation 16p
Abstract
The authors examine the influence of aggregation errors on developing estimates of regional soil-CO2 flux from temperate forests. The authors find daily soil-CO2 fluxes to be more sensitive to changes in soil temperatures than air temperature. The direct use of mean monthly air temperature with a daily flux model underestimates regional fluxes by approximately 4%. Temporal aggregation error varies with spatial resolution. Overall, the authors' calibrated modeling approach reduces spatial aggregation error by 9.3% and temporal aggregation error by 15.5%. After minimizing spatial and temporal aggregation errors, mature temperature forest soils are estimated to contribute 12.9 Pg C/yr to the atmosphere as carbon dioxide. Georeferenced model estimates agree well with annual soil-CO2 fluxes measured during chamber studies in mature temporate forest stands around the globe. (Copyright (c) 1994, American Geographical Union.)