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作 者 ：王孝安

期 刊 ：植物生态学报 1984年 8卷 1期 页码：36-40

关键词：山；

摘 要 ：本文采用点—四分法对马衔山林区阴坡半阴坡一定垂直带(2200—2700米)的植物群落进行了调查。把该林区优势植物种群山杨(Populus tremula var．davidiana)，白桦(Betula platyphylla)，青杆(Picea wilsonii)在不同群落中的相对优势度作为生态位重叠的计量，以优势植物种群在正常纯林中的优势度作为它的容纳量，应用Lotka-Volterra竞争方程描述了优势植物种群的竞争结局。1．优势植物种群的竞争是进展演替的主要动因。2．优势植物种群竞争的结局与每个种群的内禀增长力(r)和初始状态无关，只与种群间的竞争系数(α)和每个种群的容纳量(K)有关。3．优势植物种群间的竞争可作为研究植物群落的数学理论和一种方法。

Abstract:>

In this paper, the relative dominance of Populus tremula var. davidiana, Betula platyphylla and Picea wilsonii has been regarded as the measure of the niche overlap. Their final result of competition has been discussed with Lotka-Volterra equation of competition. The results are as follows:

1. The progressing succession of coniferous forest is a process of internal, directional and linear succession. The important power is the competition among dominant plant populations.

2. The result of competition among dominant plant populations has no relation to the inherent growing ability (r) of every population and the first state, and has relation to the competitive coefficient (α)between populations and the accommodeaed capacity (K) of every population.

3. The competition among dominant plant populations. may be regarded as a mathematical theory and a method studying succession of plant community.

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