寿竹的秆形结构研究

采用抽样法,在重庆梁平县选取12个10 m × 10 m的无人或少人为干扰、林分较完整的寿竹林作为调查对象,检测了秆高、枝下高、全高、鲜秆质量、壁厚、节间长、竹节数等指标,进行寿竹的秆形结构分析,结果表明:(1)寿竹的胸径与秆高、枝下高、全高、壁厚、秆重、竹节数等秆形指标之间的相关性较为显著;其中一元二次方程最能反映胸径与秆高的相关性,复合函数方程最能反映胸径与枝下高、全高、秆重、壁厚、竹节数的相关性;(2)节间长度在竹秆上随着秆轴的升高表现出逐渐升高、基本稳定、逐渐下降的规律;最长竹节出现在寿竹的中下部.

Culm Form Structure of Phyllostachys bambusoides f. shouzhu

Investigation by sampling on culm height, clear bole height, total height, culm weight, wall thickness, internodes length, node amount of Phyllostachys bambusoides f. shouzhu forest in 12 sample plots in Liangping, Chongqing Municipality. The result showed that DBH of Ph. bambusoides f. shouzhu had close relation with culm height, clear bole height, total height, wall thickness, culm weight and node amount. Quadratic equation could well explain relation between DBH and culm height while composite function equation could explain relation of DBH with clear bole height, total height, culm weight, wall thickness and node amount. Internodes length of culm from the bottom to the top varied as follows: increasing →stabilizing→decreasing.