红花尔基沙地樟子松林密度与胸径关系研究

通过对红花尔基樟子松林国家级自然保护区内25块样地中的天然沙地樟子松林密度与胸径的调查统计分析发现:单位面积株树N与林分平均胸径D之间存在幂函数关系,通过拟合达到极显著水平(R=0.998),拟合方程为N=24 703 D-1.22。该拟合方程的斜率为-1.22,与赖内克的标准斜率(b=-1.605)有一定差距,可能是自然火和人为扰动的结果。

Relationship between Density and Mean DBH of Pinus sylvestris var.mongolica plantation in Honghuaerji Sandy Land

Based on the statistical analysis of the density and DBH of Pinus sylvestris var.mongolica in 25 natural plots of Honghuaerji National Forest Nature Reserve,result shows that the plant area (N)and the average DBH (D) have the relationship of power function,which reach pole significant level (R =0.998),and the fitting equation is N =24 703 D-1.22.The slope efficiency of the fitted equation is-1.22,which is a difference from the standard slope (b =-1.605) of Reineke L.H,which may be the result of natural fire and human disturbance.