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植物种群的生态位宽度与种群之间的生态位相似性比例及生态位重叠度反映了森林的更新生态特征。采用定量分析方法对子午岭油松林主要种群的更新生态位进行分析研究,结果表明:油松林林下主要种群生态位宽度值在中间范围,但辽东栎种群则为广生态位种;油松林林下主要种群之间生态位重叠度均很小,宽生态位种群对资源具有一定共享性,而窄生态位种群则各自集群分布。
The proportion of niche similarity and the degree of niche overlap between plant niche breadth and population reflect the renewal ecological characteristics of the forest. The results showed that the dominant niche width of Pinus tabulaeformis forest was in the middle range, but the Quercus liaotungensis population was broad niche. The Pinus tabulaeformis forest The niche overlap degree between the main populations is very small. The wide niche population has some sharing of resources, while the narrow niche population distributes separately.