Analysis on Spatial Distribution Pattern and Intraspecific Corre-lation of Reevesia thyrsoidea Population in Fangcheng Seasonal Rainforest
In order to explore the spatial distribution pattern and intraspecific association characteristics of Reevesia thyrsoidea population,a 1 hm2dynamic monitoring plot was set up in the seasonal rainforest of Nas-hanzi in Fangcheng.The univariate function g(r)and the bivariate function K12(r)were used to analyze the spatial distribution pattern of the population and the intraspecific correlation of individual groups at different developmental stages.The results show that there are a large number of small-age individuals in the R.thyr-soidea population,the population diameter structure is pyramid-shaped,and the population is in a growing state.On multi-scale,the whole population,saplings,small trees and adult trees of R.thyrsoidea tend to clus-ter distribution.There is a significant positive correlation between the spatial distribution of saplings,small trees and adult trees.The young individuals of R.thyrsoidea population are abundant and have a good regen-eration potential.The adult individuals have no significant inhibitory effect on the young individuals.Through individual aggregation and intraspecies protection,R.thyrsoidea population has a strong competitiveness in the community and occupies a favorable ecological niche.In summary,the current survival status of R.thyr-soidea population is less affected by density constraints and shows an increasing trend.
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