【摘要】 本文运用正态分布、weibull分布和β分布3种概率密度函数,研究了内蒙古大青山32块落叶松人工林标准地的直径分布规律。结果表明,内蒙古大青山落叶松人工林的直径分布用β分布拟合效果较好,在此基础上建立了β分布参数的预估方程,预测林分理论直径分布,为华北落叶松人工林的科学经营提供理论依据.更多还原

【Abstract】 This paper studied diameter distribution regularities of 32 sample plots of Larix principis rupprechtii Mayr plantation in Inner Mongolia Daqingshan,based on 3 probability density function:normal distribution,weibull distribution and β distribution.The study shows that the fitting effect of diameter distribution of Inner Mongolia Daqingshan Larix principis rupprechtii Mayr plantation with β distribution is better than the other two.Prediction of β distribution function is setted up on the basis,and forecast stand diameter distribution in theory.It provides theoretical basis for scientific management of Larix principis rupprechtii Mayr plantation.更多还原