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分别运用标准化加权Ｓｉｍｐｓｏｎ方程和加权的Ｓｃｈｏｅｎｅｒ公式计测元宝山冷杉（Ａｂｉｅｓｙｕａｎｂａｏｓｈａｎｅｎｓｉｓ）群落中１２个主要木本种群的生态位宽度和种群间的生态位重叠值．并尝试把种群间生态位重叠关系以极点排序结果为根据进行生态位理论和实践的探讨．结果为：１）生态位理论在植物种群生态学的定量研究中具有现实意义；２）认识基础生态位和实现生态位的定义有助于理解“高斯假说”的“竞争排斥原理”和生态位重叠分化互补现象的相关联系；３）生态位互利性重叠现象在自然界中不存在
The niche breadths and niche overlap among 12 major woody populations in Abies yuan -baoshanensis community were measured using the standardized weighted Simpson equation and the weighted Schoener’s formula, respectively. At the same time, we try to discuss the niche theory and practice on the basis of the pole ordering result based on the overlap relationship of niche among populations. The results are as follows: 1) The theory of niche has practical significance in the quantitative study of plant population ecology; 2) Understanding the basic niche and realizing the definition of niche help to understand the “principle of competitive exclusion” and ecological niche of “Gaussian hypothesis” Overlapping differentiation and complementarity; 3) the phenomenon of niche overlap does not exist in nature