Spatial and temporal variability in forest-atmosphere CO2 exchange

Author

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• Hollinger, D.Y.
• Aber, J.
• Dail, B.
• Davidson, E.A.
• Goltz, S.M.
• et al.

Year Published

2004

Source

Global Change Biology. 10: 1689-1706.

Abstract

Seven years of carbon dioxide flux measurements indicate that a ~ 90-year-old spruce dominated forest in Maine, USA, has been sequestering 174±46 gCm^-2 yr^-1 (mean±1 standard deviation, nocturnal friction velocity (u_*) threshold >0.25ms^-1). An analysis of monthly flux anomalies showed that above-average spring and fall temperatures were significantly correlated with greater monthly C uptake while above-average summer temperatures were correlated with decreased net C uptake. Summer months with significantly drier or wetter soils than normal were also characterized by lower rates of C uptake. Years with above-average C storage were thus typically characterized by warmer than average spring and fall temperatures and adequate summer soil moisture.

Keywords

• AmeriFlux
• carbon exchange
• eddy covariance
• long-term measurements

Citation

Hollinger, D.Y.; Aber, J.; Dail, B.; Davidson, E.A.; Goltz, S.M.; et al. 2004. Spatial and temporal variability in forest-atmosphere CO₂ exchange. Global Change Biology. 10: 1689-1706.

Last updated on: August 4, 2008

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