%0 Journal Article
%A LIU Heping
%A LIU Shuhua
%A ZHU Tingyao
%A JIN Changjie
%A KONG Fanzhi
%A GUAN Dexin
%T Determination of Aerodynamic Parameters of Changbai Mountain Forest
%D 1997
%R
%J Acta Scientiarum Naturalium Universitatis Pekinensis
%P 522-528
%V 33
%N 4
%X The aerodynamic roughnees length *Z*_{0}, the zero-plane displacement *d*, the momentum drag coefficient *C*_{D}, water and heat drag coefficient *C*_{H} are calculated by using turbulence data and wind, temperature profile data observed in Changbai Mountain forest. The causes of the error in the method of calculating *d* and *Z*_{0} are also discussed. The method based on the mass conservation principle is a practical one to calculate the aerodynamic roughness length and zero-plane displacement over tall vegetations. In Changbai Mountain forest, the roughness length *Z*_{0} is about 1.6+-0.25m and the zero-plane displacement *d* is about 19.5+-1.38m. Drag coefficients *C*_{D} and *C*_{H} have a good relation with stability under unstable condition, and the average values of *C*_{D} and *C*_{H} are 6.6×10^{-3} and 6.4×10^{-3}1 in the neutral atmosphere, respectively.
%U https://xbna.pku.edu.cn/EN/abstract/article_2434.shtml