Based on the niche ecostate-ecorole theory proposed by Chunquan Zhu, we improved the model of regeneration niche, regarding the niche of the arbor tree and the sapling as the ecostate and the ecorole of the regeneration niche.

• 摘要根据朱春全提出的态势理论对更新生态位宽度和更新生态位重叠公式进行改进，分别以林隙大乔木和小径木的生态位作为更新生态位的态和势来计算动态的森林更新生态位。