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LBA-ECO TG-07 SOIL CO2 FLUX BY AUTOMATED CHAMBER, PARA, BRAZIL: 2001-2003
Entry ID:
LBA_TG07_SCO2AC
Summary
Abstract:
The net ecosystem exchange of carbon dioxide was measured by eddy covariance methods for 3 years in two old-growth forest sites near Santarem, Brazil. Carbon was lost in the wet season and gained in the dry season, which was opposite to the seasonal cycles of both tree growth and model predictions. The 3-year average carbon loss was 1.3 (confidence interval: 0.0 to 2.0) megagrams of carbon per hectare per year. Biometric observations confirmed the net loss but imply that it is a transient effect of recent disturbance superimposed on long-term balance. Given that episodic disturbances are characteristic of old-growth forests, it is likely that carbon sequestration is lower than has been inferred from recent eddy covariance studies at undisturbed sites.
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Data Set Citation
Dataset Originator/Creator:
VARNER, R.K. AND M.M. KELLER
Dataset Title:
LBA-ECO TG-07 SOIL CO2 FLUX BY AUTOMATED CHAMBER, PARA, BRAZIL: 2001-2003
Dataset Release Date:
2009
Dataset Release Place:
Oak Ridge, Tennessee, U.S.A.
Dataset Publisher:
Oak Ridge National Laboratory Distributed Active Archive Center
Data Presentation Form:
Online Files
Dataset DOI:
doi:10.3334/ORNLDAAC/927
Online Resource:
http://mercury.ornl.gov/ornldaac/send/query?term2=927&term2attribut...
Temporal Coverage
Start Date:
2001-03-19
Stop Date:
2003-05-05
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COMPLETE
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Creation and Review Dates
DIF Creation Date:
2009-04-30
Last DIF Revision Date:
2011-02-14
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- Last updated: May 2013
