DOI: 10.1126/science.1078366. Response of a Deciduous Forest to the Mount Pinatubo Eruption: Enhanced Photosynthesis

Response of a Deciduous Forest to the Mount Pinatubo Eruption: Enhanced Photosynthesis

10.1126/science.1078366

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Volcanic aerosols from the 1991 Mount Pinatubo eruption greatly increased diffuse radiation worldwide for the following 2 years. We estimated that this increase in diffuse radiation alone enhanced noontime photosynthesis of a deciduous forest by 23% in 1992 and 8% in 1993 under cloudless conditions. This finding indicates that the aerosol-induced increase in diffuse radiation by the volcano enhanced the terrestrial carbon sink and contributed to the temporary decline in the growth rate of atmospheric carbon dioxide after the eruption.

Bibliography

Gu, L., Baldocchi, D. D., Wofsy, S. C., Munger, J. W., Michalsky, J. J., Urbanski, S. P., & Boden, T. A. (2003). Response of a Deciduous Forest to the Mount Pinatubo Eruption: Enhanced Photosynthesis. Science, 299(5615), 2035â2038.

Authors 7

Lianhong Gu (first)
Dennis D. Baldocchi (additional)
Steve C. Wofsy (additional)
J. William Munger (additional)
Joseph J. Michalsky (additional)
Shawn P. Urbanski (additional)
Thomas A. Boden (additional)

References 47 Referenced 508

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J. Goudriaan Crop Micrometeorology and a Simulation Study (Center for Agricultural Publication and Documentation Wageningen Netherlands 1977).
Here RUE is defined as the ratio of the CO 2 assimilation rate to the incident solar radiation above the canopy. RUE in general decreases with incident radiation intensity. When incident radiation intensity approaches zero the RUE is the initial RUE. How RUE changes with incident radiation intensity depends on the shape of the photosynthetic response curve which is characterized by the closeness to linear response (CLR) coefficient. If the response curve is linear CLR is infinite. If the response curve levels off quickly as the incident radiation intensity increases CLR is small. Initial RUE and CLR differ between diffuse and direct beam radiation. Detailed explanations can be found in (34) and in (36).
L. Gu et al. J. Geophys. Res. 107(D6) 4050 doi: 10.1029/2001JD001242 (2002). (10.1029/2001JD001242)
10.1126/science.260.5112.1314
Materials and methods are available as supporting material on Science Online.
Intercept 0.16; slope = 1.01; R 2 = 0.8.
NEE = 3.75 – 44.5sinθ + 27.17sin 2 θ – 4.05sin 3 θ where θ is the solar elevation angle. R 2 = 0.6.
10.1007/s00484-001-0109-8
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J. T. Houghton et al. Eds. Climate Change 2001: The Scientific Basis (Cambridge Univ. Press Cambridge 2001) available at www.grida.no/climate/ipcc_tar/wg1/index.htm.
We thank M. Post M. Huston T. West A. King G. Marland F. Pan and D. Fitzjarrald for commenting on the manuscript. D. Fitzjarrald contributed to the data used in this study. This paper was a contribution to Ameriflux and Fluxnet as well as the Oak Ridge National Laboratory's (ORNL's) Carbon Cycle Project (Principal Investigator M. Post). The AmeriFlux and Carbon Cycle Project are sponsored by the U.S. Department of Energy Office of Science Biological and Environmental Research Terrestrial Carbon Program. Fluxnet is sponsored by NASA's Carbon Cycle Science Program. ORNL is managed by UT-Battelle LLC for the U.S. Department of Energy under the contract DE-AC05-00OR22725.

Dates

Type	When
Created	22 years, 5 months ago (March 27, 2003, 4:25 p.m.)
Deposited	1 year, 7 months ago (Jan. 9, 2024, 9:57 p.m.)
Indexed	4 days ago (Aug. 28, 2025, 8:51 a.m.)
Issued	22 years, 5 months ago (March 28, 2003)
Published	22 years, 5 months ago (March 28, 2003)
Published Print	22 years, 5 months ago (March 28, 2003)

Funders 0

None

BibTeX

@article{Gu_2003, title={Response of a Deciduous Forest to the Mount Pinatubo Eruption: Enhanced Photosynthesis}, volume={299}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1078366}, DOI={10.1126/science.1078366}, number={5615}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Gu, Lianhong and Baldocchi, Dennis D. and Wofsy, Steve C. and Munger, J. William and Michalsky, Joseph J. and Urbanski, Shawn P. and Boden, Thomas A.}, year={2003}, month=mar, pages={2035–2038} }

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