元宝山冷杉群落主要木本种群的生态位分析

AN ANALYSIS OF THE CHIEF TREE POPULATIONS OF THE ABIES YUANBAOSHANENSIS COMMUNITY AND THEIR NICHE RELATIONSHIPS

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（Ａｂｉｅｓｙｕａｎｂａｏｓｈａｎｅｎｓｉｓ）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；

In this paper, the standard expanded Simpson formula and expanded Schoener formula are used to calculate the niche breadths of 12 chief tree populations and the niche overlaps among the populations in Abies yuanbaoshanensis community,in an attempt to analyse the niche theory and practice on the basic of niche overlap relationship interpopulation,which derives from polar ordination.Results show that:1) The niche theorys for the quantitative study of plant population ecology has practical significance. 2) The definition of fundamental niche and existing niche helps us to understand the interrelation between the Gause's hypothesis principle of populationscompeterepeled and populations overlap, differentiation and cosupplment. 3) The mutually beneficial niche overlap doesn't exist.