以态势理论为基础的更新生态位测度研究

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。通过对长白山阔叶红松林固定样地林隙更新的调查,分析了林隙内主要树种的数量特征,研究了其更新生态位宽度及重叠的特征。结果表明:此改进公式不但保证了其数学上逻辑的一致性,同时增加了生态学的解释意义,提高了更新生态位测度的精确度。

Study on Regeneration Niche Metrics Based on Ecostate-Ecorole Theory

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. Through the investigation on the gap regeneration of the Changbai mountains Korean Pine broad-leaved mixed forest, the quantitative characteristics of regenerated tree species in the gaps were analyzed, and the breadth and the overlap of the regeneration niche were calculated in this paper. The result showed that the improved model did not only ensure the mathematics logistic coherence, but also increase the ecological explain meaning, and advance the precision of the regeneration niche metrics.