Wind profiles in and over trees

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