关键词: 林带结构参数, 林带地上生物体积密度, 风速削弱系数, 透风系数, 疏透度

Abstract:

A new structural parameter of shelterbelts, density of biomass volume is put forward in this paper. Its practicality in managements of the shelterbelts and its physical meaning of wind reduction are expounded. Analytical relations between the new parameter and often used parameters (permeability and porosity) are deduced. An example is given to show the application of the new parameter in management of shelterbelts.

Key words: Structural parameter of shelterbelts, Density of biomass volume of shelterbelt, Wind reduction coefficient, Permeability, Porosity