不同坡度和土层厚度对毛竹生长量的影响研究

Study on the Impact of phyllostachys heterocycla(Carr.)Lehaie Growth in Different Slope and Soil Thickness

毛竹生长受自然条件的影响和制约,不同的立地条件会对毛竹生长量产生不同的影响。笔者通过对样地的观测,筛选出毛竹胸径生长量相关数据,根据第一类毛竹一元重量表换算成鲜重生长量。在立竹度、海拔高度、郁闭度等因素基本相同的情况下重点分析坡度以及土层厚度对毛竹生长量的影响。多因素方差分析结果表明:不同坡度、土层厚度对毛竹生长量影响差异显著,二者交互作用对毛竹生长量影响不大。

The growth of phyllostachys heterocycla（Carr.）Lehaie is influenced and restricted by natural conditions.The different site conditions can result in different growth increment.The authors firstly screened out the related data about diameter at breast height growth by means of observation of the sample,then converted into fresh weight growth according to the first kind of phyllostachys heterocycla（Carr.）Lehaie unary heavy scale.Slope and the soil thickness were emphatically analyzed on the condition that stand density,altitude and canopy density were almost the same.Multiple factor variance analysis showed that different slope and soil thickness had a significant effect on its growth increment,but the interaction between the two factors was negligible.