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RECORD NUMBER: 5 OF 42

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 ;
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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.)