天山中东部天山云杉林窗更新的灰色决策

本文根据天山中东部林区择伐后云杉林(下称择伐林分)天然更新的调查资料,应用灰色系统理论中灰色局势决策的方法,对不同立地条件下,择伐林分中不同大小林窗的更新效果进行了分析研究,得出了选择适宜林窗更新立地因子的最优决策,以及林窗开敞度大小的最优选择。为寻求天山云杉择伐林分的合理经营,特别是采育方式的选定,提供了依据。

The Grey Decision on Stand-Hole Regeneration of Schrenk Spruce Stand in the Mid-Eastern Sector of the Tianshan Mountains

On the basis of investigation of natural regeneration of schrenk spruce after selecting cutting in the mid-eastern selector of the Tianshan Mountains, using the grey situation method from the grey system theory, this paper studies and analyses the regeneration effects of different sized stand-holes in selecting cutting shrenk spruce under various site conditions and puts forward the best decision in selection of the site factors for optimum stand-hole regenereation as well as the optimum selection of the opening degree, which provides scientific basis for reasonable management of the schrenk spruce, especially for the ways of its cutting and developing.