Journal of Forestry Research

, Volume 16, Issue 4, pp 303–305 | Cite as

Turbulence statistics of natural airflow within a large Open Top Chamber

  • Zhang Jun-hui
  • Han Shi-jie
  • Song Guo-zheng


The turbulence statistics parameters (variables) of natural airflow within a large Open Top Chamber (OTC), 4 m in high height and 3 m in diameter, were measured with a three-dimensional ultrasonic anemometer/thermometer at Research Station of Changbai Mountain Forest Ecosystems Jilin Province, China in May 2004, for improving the field application of OTP. Results showed that because of the physical limitation, turbulence within OTC exhibited unique map compared with that of natural environments. There were clear daily patterns for most parameters. Turbulence here seemed to be isotropic and closely linked at all directions. Shape of eddies looked like a ’cylinder‘ which was very similar to the shape of OTC. Continuous airflow was always interpreted by large scale eddies from top of OTC and showed high interactive intermittence at all directions.


Open top chamber Turbulence density Time and length scales Intermittence Buoyancy 

CLC number


Document Code


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Amiro, B.D. 1990. Comparison of turbulence statistics within three boreal forest canopies [J]. Boundary-Layer Meteorology,51(1/2): 99–121.CrossRefGoogle Scholar
  2. Baldocchi, D.D. and Meyers, T.P. 1988. Turbulence structure in a deciduous forest [J]. Boundary-Layer Meteorology,43(4): 345–364.CrossRefGoogle Scholar
  3. De Angelis, P. and Scarascia-Mugnozza, G. 1998. Long-term CO2 enrichment in a mediterranean natural forest: an application of large open top chambers [J]. Chemosphere,36(4/5): 763–770.CrossRefGoogle Scholar
  4. Ham, J. and Owensby, C. 1991. Simulating confounding CO2 and chamber effects in open to field chamber for CO2 enrichment studies [C]. In: Agronomy abstracts. American Society of Agronomists, Madison, Wisconsin 53711 USA, p18.Google Scholar
  5. Heagle, A.S., Body, D.E. and Heck, W.W. 1973. An open top field chamber to assess the impact of air pollution on plants [J]. J. Environ. Qual.,2(2): 365–368.CrossRefGoogle Scholar
  6. Hu Fei. 1995. Turbulence, intermittence and atmospheric boundary layer [M]. Beijing: Science publishing Press, p 77.Google Scholar
  7. Leadley, P.W. and Drake, B.G., 1993. Open top chambers for exposing plant canopies to elevated atmospheric CO2 and for measuring net gas exchange [J]. Vegetation,104/105 (1), 3–15CrossRefGoogle Scholar
  8. Lucas, P.W., Cottam, D.A., Mansfield, T.A. 1987. A large-scale fumigation system for investigating interactions between air pollution and cold stress on plants [J]. Environ. Pollut.,43(1): 15–28.PubMedCrossRefGoogle Scholar
  9. McLeod, A.R. and Baker, C.K. 1988. The use of open field systems to assess yield response to gaseous pollutants [C]. In: Heck, W.W., Taylor, O.C. and Tingey, D.T. (eds.) Assessment of crop loss from air pollutants Elsevier Applied Science, Barking, pp. 181–210.Google Scholar
  10. Norris, T., Wilkinson, D., Lockwood, A.,et al. 1996. Performance of a controlled-ventilation open-top chamber for climate change research [J]. Agricultural and Forest Meteorology.78(3): 239–257.CrossRefGoogle Scholar
  11. Raupach, M.R., Finnigan, J.J. and Brunet, Y. 1996. Coherent eddies and turbulence in vegetation canopies: The mixing-Layer analogy [J]. Boundary-Layer Meteorology,78(3/4): 351–382.CrossRefGoogle Scholar
  12. Shaw, R.H. 1985. On diffusive and dispersive fluxes in forest canopies [C]. In: B.A. Hutchison and B.B. Hicks (eds.), the Forest-Atmospheric Interaction. D. Reidel. Co., Dordrecht., p407–419.Google Scholar
  13. Shaw, R.H. and Seginer, I. 1987. Calculation of velocity skewness in real and artificial plant canopies [J]. Boundary-Layer Meteorology,39(4): 315–332.CrossRefGoogle Scholar
  14. Stull, R.B., 1988. An Introduction to boundary layer meterology [M]. Dordrecht: Kluwer Academic publishers, 153–166.Google Scholar
  15. Wang Chunyi, Gao Suhua and Liu Jiangge. 1994. The structure and performance of OTC-1 open top chamber [J]. Advance in Environmental Science,2(3): 19–31.Google Scholar
  16. Zhang Junhui, Ding Zhihui, Han Shijie,et al. 2002. Turbulence regime near the forest floor of a mixed broad leaved/Korean pine forest in Changbai Mountains [J]. Journal of Forestry Research,13(2): 119–122.CrossRefGoogle Scholar

Copyright information

© Editorial Board of Journal of Forestry Research. All rights reserved 2005

Authors and Affiliations

  • Zhang Jun-hui
    • 1
  • Han Shi-jie
    • 1
  • Song Guo-zheng
    • 1
  1. 1.Institute of Applied EcologyChinese Academy of SciencesShenyangP.R. China

Personalised recommendations