“permeability of shelterbelts”的概念、定义、翻译、参考文献-科学参考

单词	permeability of shelterbelts
释义	permeability of shelterbelts Encyclopedia 农学林带透风系数释 permeability of shelterbelts林带透风系数当风向垂直于林带时，背风面林带高度以下空间的平均风速与本地区旷野同一高度平均风速之比。以小数或者百分数表示，是评价林带防风效应优劣的重要参数。与疏透度，即林带纵断面的透光面积与其纵断面的总面积的比值相关。又称透风度。
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