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作 者 ：唐守正 李希菲

期 刊 ：林业科学 1995年 31卷 1期 页码：27-34

关键词：自然稀疏；密度；

Keywords:Self-thinning, Density,

摘 要 ：本文以长白落叶松和杉木验证了作者提出的同林纯林自稀疏方程式。1n(N)=1n(S_f)-1n((D/D₀)βγ+δ)/γ证明此方程式正确描述了林分自稀疏过程。方程式中δ由林分初始决定,β是Reineke自稀疏系数。S_f为最大密度指数,γ是自稀疏指数.采用F检验方法证明,林分最大密度指数相当稳定且与立地,地区,年龄和初始状态无关,γ值也与立地,地区,年龄和初始状态无关,但可能存在较大的抽样误差。

Abstract:The Self-thinning equation of even aged pure stands, that was proposed by one of the authors,was tested.The equation is 1n(N)=1n(S_f)-1n((D/D₀)βγ+δ)/γ Testing result showed that the processes of self-thinning was properly describedby the equation where δ,in the equation,was determined by a initial state of a stand.β denoted Reineke‘s self-thinning coefficient. S_f was the maxmum density index,γwas self-thinning powers F-test was emploied.The results show that maxmum density index of stand was close to a constant for a certain species but independent from site,region where stand located,stand age and initial state of the stand.The value of δwas also independent from site,region,age and initial state,but a bigger sampling error could exist.

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