Abstract:

We investigated the statistic characteristic of the Camellia japonica population in the Changmenyan Island where is the north distribution boundary of the species. The species was mainly distributed from 20 to 80m a. b. 1.The diameter of the individuals was from 2 to 45cm, and the height of the trees was from 0. 4 to 4.5m. The life table shows that the majority of the individuals were those of middle size. The survivorship curve indicates that the mortality is high at the younger stage than in others. The size distribution pattern was of the Ⅲ type of Bodenheimer’s. Three theoretical models, Poisson, Negative Binomial Distribution and Neyman were used to investigate the spatial pattern of the population. The results indicate that the population spatial patterns had high consistency with the Binomial Distribution. Therefore the spatial pattern of the population was of contagious distribution. The indexes are: K =0. 6219, C=17. 7327, I=16. 7327, 1/K=I. 5896, m*/m=2. 5896.

Key words: Camellia japonica, Population, Statistics