辽宁西部油松人工林下草本植物多样性与密度的关系

Relationship between Biodiversity of Herbaceous Species and Stand Density of Pinus Tabulaeformis Artificial Forest in Western Liaoning Province

对辽西地区两个试验点的油松人工林下草本植物的多样性进行了研究,重点分析了密度与多样性之间的关系,以期为人工林生态功能恢复评价和植被建设提供理论依据。结果表明,在适宜的密度条件下,草本植物具有较高的多样性,影响油松林植物多样性较重要的因子是海拔高度、坡度和坡位、林分密度和坡向。

In order to provide theoretical basis for evaluations on ecological function rehabilitation and vegetation development, the herbaceous diversity of the Pinus tabulaeformis Artificial Forest, especially the relationship between biodiversity of herbaceous species and stand density were analyzed in western Liaoning province. The results show that only at suitable density the biodiversity were higher and that the 7 factors relative to the herbaceous biodiversity of P. tabulaeformis forests are all important, and among them 5 factors, i.e. the elevation, slope gradient, slope position, density and slope direction are especially more important.