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本文通过对9条分布均匀、相对较窄的不同疏透度(透光疏透度,下同)(0.13～0.33)的树木林带和不同疏透度(0.00～0.80)风障组合的野外风速观测,确定了树木林带和风障的最适疏透度分别为0.25和0.13。基于林带结构(疏透度)与风速降低的关系,确定了林带主带间距离的主要参数,即,林带结构系数(δ)和以主害风为代表的小气候参数(Lrp)。另外,通过对林带树木的野外调查,应用树木解析技术确定林带成林高(H0)。因此,树木林带的主带间距可以通过林带结构系数、希望降低风速的比例和树木生长模型来确定。本文以杨树林带为例,具体确定了杨树林带的主带间距。该研究结果不仅适于树木林带的设计,同时适于其它生物材料或人工风障的设计。图4表5参40。
In this paper, the field wind speed of nine evenly distributed and relatively narrow windbreaks (0.13 ~ 0.33) and wind barrier with different degrees of permeability (0.00 ~ 0.80) Observation, to determine the optimal shelterbelt and wind barrier of the best permeability were 0.25 and 0.13. Based on the relationship between forest structure (permeability) and wind speed reduction, the main parameters of forest belt main belt distance were determined, that is, the structural parameter of forest belt (δ) and the microclimate parameter (Lrp) represented by the main wind. In addition, through field investigation of forest trees, tree height analysis (H0) was applied to determine forest stand height. Therefore, the main belt spacing of the tree belt can be determined by the structural coefficient of the forest belt, the ratio of wind speed reduction, and the tree growth model. In this paper, the poplar belt as an example, specifically to determine the main belt spacing poplar belt. The results are not only suitable for the design of trees, but also for the design of other biological materials or artificial wind barriers. Figure 4 Table 5 Reference 40.