摘要
通过对１１７块兰考泡桐样地资料的分析，发现兰考泡桐一接干的高度与立地和苗木质量间存在着正相关，二次接干的高度与一接干的高度存在负相关。不同立地和不同年龄林分各径阶树高的变化规律可用建立的兰桐标准树高曲线表述；兰考泡桐林分的直径结构可用Ｗｅｉｂｕｌ密度函数或Ｌｏｇｉｓｔｉｃ生物种群模型恰当描述。但从预测的角度出发Ｌ－ＰＲＭ（Ｌｏｇｉｓｔｉｃ）较之ＰＲＭ（Ｗｅｉｂｕｌ）效果更好。
The research on the structure of Paulownia elongata stand indicates that the first branching height is positively relative to the site index and seedling quality, but negatively to the second branching height. The height variation of different diameter classes in P. elongata stands with sites and ages can be simulated by established H curve function. In the prediction of the diameter structure of P. elongata stand, this paper reveals that L PRM is better than PRM (Weibull).
出处
《林业科学研究》
CSCD
北大核心
1996年第2期114-120,共7页
Forest Research
基金
"八五"攻关项目
关键词
泡桐
林分直径结构
标准树高曲线
Paulownia elongata, stand diameter structure, standard H curve, L PRM and PRM
