首页|MAXIMUM DENSITY LINE AND MODEL OF SELF-THINNING FOR PLANTATION
MAXIMUM DENSITY LINE AND MODEL OF SELF-THINNING FOR PLANTATION
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The method to determine the maximum density line of self- thinning is discussed and a self-thinning model is developed by using long term observed data of spacing study plots. According, to traditional method, the slope of the maximum density line wasresult of average, which was determined by different stand sites and densities. Therefore the slope determined by the previous method poorly describes the self-thinning procedure of the maximum density stand. The self-thinning line (N-Dg curve) of plantation is reverse sigmoid, which can be simulated by modified Korf equation. It is concluded that the minimum asymptotic number of trees (N_(min)) of self-thinning in plantation are positively correlated with initial density (N_o), while curve shape is related to site and initial density.
Stand densitySelf-thinningModified Korf equation
Li Fengri、MengLingbin
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Northeast Forestry University, Harbin, 150040, P. K. China
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