【摘要】 应用趋势面分析 ,采用 2因子 2次回归正交旋转组合的原理与方法 ,建立茶秆竹林生物量与立竹密度 ( N)和胸径 ( D)关系的回归模型 ,分析单因子产量反应 ,建立边际产量模式 ,同时进行生产弹性分析和探讨 2因素的交互作用 .结果表明 ,所建立的回归模型能很好地反映生物量、密度和胸径三者之间的关系 .D和 N单独作用时 ,林分的最佳密度为 1 843 5株 /hm2 ,平均胸径为 5.73 cm.生产弹性系数 EP<0 ,说明现存竹林密度 N=1 981 5株 /hm2偏大 .立竹密度与胸径的交互作用非常明显 ,N和 D分别介于 1 5750～ 2 0 2 50株 /hm2 和 4.5～ 6 .5cm时 ,茶秆竹的生物量可获得最佳值更多还原

【Abstract】 Using the methods of trend surface analysis and orthogonal rotation of two factors and quadratic regression,the mathmatics model of the biomass,density and diameter of artifical Pseudosasa amabilis McCl forest was built,as well as analyzed the biomass of one factor and built the mathematics model of marginal yield The result showed that the model could reflect the relationship between biomass,density and diameter very well The optimal density is 18 435 culm/hm 2 and 5 73 cm in diameter The existing density (19 815 culm/hm 2) is larger base on the EP(productive elasticity)<0 The interaction of the density and diameter is obvious and the biomass will be the highest when the density and diameter are 15 750 ~20 250 culm/hm 2 and 4 5~6 5 cm respectively更多还原