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作 者 ：兰星平

期 刊 ：林业科学 1996年 32卷 1期 页码：86-91

关键词：Taylor幂法则；生物种群；空间分布型；

Keywords:Taylor‘smodel, Live thing population, Spatial pattern,

摘 要 ：对raylor幂法则(V=am^b)在检验种群空间分布型中所存在的问题进行了研究,结果表明:回归参数a、b的不同组合形式与分布型的判断准则,并非完全取决于a、b的数值大小,而是在m的取值区间(m_a,m_b)内,比值V/m=am^(b-1)是否偏离1来确定的。在logm×logV的直角坐标系中,a和b的组合数有九种;a、b作为控制V与m变动程度的参数,本身均不具备特定的生物学含义。当样方大小改变,而样方中的虫体数不成等比例的增加或减少时,参数b的取值也随之改变;当m≠1时,可用bl—lga/lgm来判断种群的分布型,其等价于V/m1的判断准则,当m=1时,V=a,直线与lgm轴垂直,此时b的存在无意义。

Abstract:The problems of Taylor‘s power law in examing insect population spatial pattern, were systematically studed. The results were as follows:①the different combination types of a and b (the parameters in V=am^b), and the law of spatial patterns of insect population were not completely determined by the values of a and b, but by the values of V/m=am^b-1 within the limits [m_a,m_b], the combination types of a and b are nine.②the parameters of a and b were used for decribing the relation between V and m,none of them do not possess particular bionomics meaning, the b is not the aggregation index to describing insect population inherent charater too. When the sample size in the sampling quadrat are changed, and X_ij‘/X_ij≠a,the value of b is certain changed too.③ when the m≠1,the b=(ar>,or<) 1-lg(a)/lg(m)can be used to examinig insect population spatial patterns.

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