大河镇不同立地条件对柳杉幼林生长的影响

Effect of Site Condition on Cryptomeria fortunei Growth in Dahe Township

本文选择六盘水市大河镇退耕地营造的6年生柳杉幼林,通过样地调查,分析比较不同立地条件(土壤、坡向、坡位、坡度)对柳杉幼林生长的影响,结果表明:土壤类型上看,柳杉幼林在土壤比在砂土生长快;坡向上看,在阴坡比在阳坡生长快;坡位上看,下部生长速度最快,其次为中坡位;坡度对柳杉速度的影响表现在缓坡生长量最大,其次是斜坡,陡坡生长量最小。

This article chooses Dahe town of Liupanshui city , the construction of the restored Cryptomeria fortunei young piunus born six years , through bungeana, analyzing different site conditions （soil , slopes, gradient） for Cryptomeria fortunei bits, we find that young piunus grows fast in soil than in sandy on shady slope than on sunny slope. The fastest growth position for Cryptomeriafortunei is the bottom slope and next is middle slope terms of gradient, Cryptomeria fortunei grows fast on gentle slope, faster on declined slope, and smallest on steep slope.