海南岛无翼坡垒种群调节研究

Study on the Population Regulation of Hopea exalata in Hainan Island

通过对无翼坡垒种群的两个高度类群的个体群的高度与密度关系，以及种群生物量与种群稀疏规律的研究，基本上掌握了种群的调节规律．该种群３ｍ高以下的个体群高度与密度的关系为Ｄ１＝０．７９１０２６Ｈ１（－１．１８７１６），３ｍ高以上的个体群相应的关系为Ｄ２＝１．８３２５２Ｈ２（－２．２６７８２），种群生物量基本上符合Ｌｏｇｉｓｔｉｃ增长，种群稀疏规律Ｂｍｆ＝０．０２４８Ｄ（－１．４２０４）．说明无翼坡垒种群调节的因素是种群密度，稀疏过程主要是自疏过程，他疏程度小，但却是一个必须引起注意的因素．

This paper reports that Hope aralata population regulation factor is it's density and the relationship between the height and the density of population can be described as:D1=0.79103H1(-101872)(H1< 3m)and D2=1.8325 H2(-202678)(H2≥3m),where D1 and D2 are density of trees, N* m*(-2),H1 and H2 are height of trees,m;the relationship between the density and the mean plant biomass during the self- thinning accords with the thinning power law and it can be described as:Bmf=0.0248 D(-1.4204),where Bmf is the mean plant biomass,kg,D is population density in trees,N* m(-2).