Wind profiles in and over trees

编号 zgly0000339191

文献类型 期刊论文

文献题名 Wind profiles in and over trees

学科分类 220.1060;森林生态学

作者 ZHUJiao-jun  LIXiu-fen  GondaYutaka  MatsuzakiTakeshi 

作者单位 InstituteofAppfiedEcology  ChineseAcademyofSciences  Shenyang  110016  P.R.China//FacultyofAgriculture  NiigataUniversityNiigata  950-2181  Japan  InstituteofAppfiedEcology  ChineseAcademyofSciences  Shenyang  110016  P.R.China//GratuateSchool  ChineseAcademyofSciences  Beijing  100039  P.R.China  FacultyofAgriculture  NiigataUniversityNiigata  950-2181  Japan 

母体文献 Journal of Forestry Research;林业研究: 英文版 

年卷期 2004,15(4)

页码 305-312

年份 2004 

分类号 S718.56 

关键词 森林生态系统  风速廓线  风  树木  林冠 

文摘内容 One of the most important and frequently studied variable in forests and the most basic element in governing transport processes of airflow is wind speed. The study of wind profile, defined as the change of wind velocity with height, and wind velocity are important because of tree physiological and developmental responses. Generally, wind profiles above the ground or at a canopy surface follow classical logarithm law, but wind profiles in a single tree and in a forest stand are not logarithmic. This paper summarizes the results of wind profile studies within a single tree, in a forest stand, above the forest canopy and in a forest area from recent research in a coastal pine forest. The results demonstrate that: 1) wind profiles with in a single conifer tree crown showed an exponential function with height, 2) wind profiles in forest stands were able to be expressed by attenuation coefficient of wind, 3) wind profiles over a forest canopy could be determined using profile parameters (friction velocity, roughness length and displacement), and 4) for a forest area, the extreme wind speed could be predicted reasonably using the methods developed for the design of buildings. More research will be required to demonstrate: 1) relationships between wind profiles and tree or stand characteristics, 2) the simple methods for predicting wind profile parameters, and 3) the applications of wind profile in studies of tree physiology, forest ecology and management, and the detail ecological effects of wind on tree growth。