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Structure of Carbon Dioxide Exchange Processes Above a Spruce Forest

  • B. Wichura
  • J. Ruppert
  • A. C. Delany
  • N. Buchmann
  • T. Foken
Part of the Ecological Studies book series (ECOLSTUD, volume 172)

Abstract

Several micrometeorological techniques,’such as the flux-gradient method or the eddy covariance technique, offer the potential to measure net fluxes of water vapor, CO2 and other trace gases exchanged between ecosystems and the atmosphere (e.g., Baldocchi and Meyers 1998). Subsequent data analyses allow the calculation of net ecosystem CO2 exchange. These net fluxes, however, reflect the balance between different component fluxes. In the case of CO2, two opposing fluxes contribute to this net flux: CO2 uptake during photosynthesis and CO2 release during respiration from above- and belowground organisms. Distinguishing among these components is critical to obtain insights into the processes underlying ecosystem responses to climate forcing (Buchmann 2002). This is because environmental parameters, such as temperature and soil moisture, differentially affect biological activities (e.g., Baldocchi et al. 2001).

Keywords

Photosynthetically Active Radiation Vertical Wind Eddy Covariance American Meteorological Society Carbon Dioxide Exchange 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Aubinet M, Grelle A, Ibrom A, Rannik Ü, Moncrieff J, Foken T, Kowalski AS, Martin PH, Berbigier P, Bernhofer Ch, Clement R, Elbers J, Granier A, Grünwald T, Morgenstern K, Pilegaard K, Rebmann C, Snijders W, Valentini R, Vesala T (2000) Estimates of the annual net carbon and water exchange of forests: the EUROFLUX methodology. Adv Ecol Res 30:113–175CrossRefGoogle Scholar
  2. Baldocchi D, Meyers T (1998) On using eco-physiological, micrometeorological and bio-geochemical theory to evaluate carbon dioxide, water vapor and trace gas fluxes over vegetation: a perspective. Agric For Meteorol 90:1–25CrossRefGoogle Scholar
  3. Baldocchi D, Falge EH, Gu L, Olson R, Hollinger D, Running S, Anthoni P, Bernhofer C, Davis K, Evans R, Fuentes J, Goldstein A, Katul G, Law B, Lee XH, Malhi Y, Meyers T, Munger W, Oechel W, Paw UKT, Pilegaard K, Schmid HP, Valentini R, Verma S, Vesala T (2001) FLUXNET: a new tool to study the temporal and spatial variability of ecosystem-scale carbon dioxide, water vapor and energy flux densities. Bull Am Meteorol Soc 82(11):2415–2434CrossRefGoogle Scholar
  4. Bowling DR, Delany AC, Turnispseed A A, Baldocchi DD, Monson RK (1999) Modification of the relaxed eddy accumulation technique to maximize measured scalar mixing ratio differences in updrafts and downdrafts. J Geophys Res 104:9121–9133CrossRefGoogle Scholar
  5. Brunet Y, Irvine MR (2000) The control of coherent eddies in vegetation canopies: streamwise structure spacing, canopy shear scale and atmospheric stability. Boundary-Layer Meteorol 94:139–163CrossRefGoogle Scholar
  6. Buchmann N (2002) Plant ecophysiology and forest response to global change. Tree Physiol 22:1177–1184PubMedCrossRefGoogle Scholar
  7. Buchmann N, Hinckley TM, Ehleringer JR (1998) Carbon isotope dynamics in Abies amabilis stands in the Cascades. Can J For Res 28:808–819CrossRefGoogle Scholar
  8. Businger JA, Oncley SP (1990) Flux measurement with conditional sampling. J Atmos Ocean Tech 7:349–352CrossRefGoogle Scholar
  9. Finnigan J (2000) Turbulence in plant canopies. Annu Rev Fluid Mech 32:519–571CrossRefGoogle Scholar
  10. Foken T, Kartschall T, Badeck F, Waloszczyk K, Wichura B, Gerchau J (2000) Time response characteristics for the atmosphere-plant-interaction, measured during the total solar eclipses in southern Germany on August 11,1999. In: Proc 14th Symp on Boundary Layer and Turbulence, 7–11 Aug, American Meteorological Society, pp 159–160Google Scholar
  11. Heinz G, Handorf D, Foken T (1999) Direct visualization of the energy transfer from coherent structures to turbulence via wavelet analysis. In: Proc 13th Symp on Boundary Layer and Turbulence, Dallas, Texas, 10–15 Jan, American Meteorological Society, pp 664–665Google Scholar
  12. Keeling CD (1958) The concentration and isotopic abundances of atmospheric carbon dioxide in rural areas. Geochim Cosmochim Acta 13:322–334CrossRefGoogle Scholar
  13. Lloyd J, Kruijt B, Hollinger DY, Grace J, Francey RJ, Wong S-C, Kelliher FM, Miranda AC, Farquhar GD, Gash JHC, Vygodskaya NN, Wright IR, Miranda HS, Schulze E-D (1996) Vegetation effects on the iso-topic composition of atmospheric CO2 at local and regional scales: theoretical aspects and a comparison between rain forest in Amazonia and a boreal forest in Siberia. Aust J Plant Physiol 23:371–399CrossRefGoogle Scholar
  14. O’Leary MH (1988) Carbon isotopes in photosynthesis. Bio Science 38:328–336Google Scholar
  15. Oncley SP, Foken T, Vogt R, Bernhofer C, Kohsiek W, Liu H, Pitacco A, Grantz D, Ribeiro L, Weidinger T (2002) The energy balance experiment EBEX-2000. In: Proc 15th Symp on Boundary Layer and Turbulence, Wageningen, 15–19 July, American Meterological Society, pp 1–4Google Scholar
  16. Pattey E, Desjardins RL, Rochette P (1993) Accuracy of the relaxed eddy accumulation technique. Boundary-Layer Meteorol 66:341–355CrossRefGoogle Scholar
  17. Raupach MR, Coppin PA, Legg BJ (1986) Experiments on scalar dispersion within a model plant canopy, part I. The turbulence structure. Boundary-Layer Meteorol 35:21–52CrossRefGoogle Scholar
  18. Raupach MR, Finnigan JJ, Brunet Y (1996) Coherent eddies and turbulence in vegetation canopies: the mixing-layer analogy. Boundary-Layer Meteorol 78:351–382CrossRefGoogle Scholar
  19. Ruppert J, Wichura B, Delany AC, Foken T (2002) Eddy sampling methods, a comparison using simulation results. In: Proc 15th Symp on Boundary Layer and Turbulence, Wageningen, 15–19 July, American Meteorological Society, pp 27–30Google Scholar
  20. Valentini R, Matteucci G, Dolman AJ, Schulze E-D, Rebmann C, Moors EJ, Granier A, Gross P, Jensen NO, Pilegaard K, Lindroth A, Grelle A, Bernhofer C, Grünwald T, Aubi-net M, Ceulemans R, Kowalski AS, Vesala T, Rannik Ü, Bergigier P, Loustau D, Guo-mundsson J, Thorgeirsson H, Ibrom A, Morgenstern K, Clement R, Moncrieff J, Mon-tagnani L, Minerbi S, Jarvis PG (2000) Respiration as the main determinant of carbon balance in European forests. Nature 404:861–865PubMedCrossRefGoogle Scholar
  21. Wyngaard JC, Moeng C-H (1992) Parameterizing turbulent diffusion through the joint probability density. Boundary-Layer Meteorol 60:1–13CrossRefGoogle Scholar
  22. Yakir D, Wang X-F (1996) Fluxes of CO2 and water between terrestrial vegetation and the atmosphere estimated from isotope measurements. Nature 380:515–517CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • B. Wichura
  • J. Ruppert
  • A. C. Delany
  • N. Buchmann
  • T. Foken

There are no affiliations available

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