油松种群自然更新格局的研究

Natural Regeneration Pattern of Chinese Pine Population.

种群的空间格局系指某一种群个体在其生存空间内相对静止的散布形式。它是种群的重要属性之一,是种的生物学特性对其所生存的环境条件在特定时期适应和选择的结果。空间格局的阐明。

The methods of frequency distribution comparison and aggregation index measurement are applied for the research of the natural regeneration patterns of Chinese pine (Pinus tabtaeformis) populaticn. Under semi-arid ecological conditions, the natural regeneration pattern of Chinese pine population is showed to conform with the truncated negative binormial distribution, which belongs to the type pf aggregated distribution. This kind of pattern with higher aggregation intensity is considered to be the best way of distribution for Chinese pine population to survive under unfavorable ecological conditions such as drought and sterile and to reproduce. It prfoundly reveals the biological and ecological characters of Chinese pine population from a different view.