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Chinese Journal of Applied Ecology ›› 2000, Vol. ›› Issue (2): 202-204.

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Wind tunnel experiment on canopy structural parameters of isolated tree and wind velocity field characters nearby

GUAN Dexin, ZHU Tingyao   

  1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110015
  • Received:1999-04-13 Revised:1999-10-19 Online:2000-03-25

Abstract: The canopy structural parameters(porosity β and permeability α) of isolated tree,and the wind velocity field character nearby were analyzed by wind tunnel experiment.The results show that α and β fitted the function of α=β0.6,and the wind velocity nearby decreased in ellipsoid contour. The contour increased with increasing tree height and canopy width,and decreased with increasing permeability (or porosity).The isotach became the shape of ellipses or elliptic segments in horizontal and vertical plans.