Spatial Pattern of Artificial Mixed Forest of Cunninghamia lanceolata and Michelia macclurei

The spatial point pattern analysis method was used to study the artificial mixed forest of Cunninghamia lanceolata and Michelia macclurei in the Daqingshan experimental field in Guangxi, and analyzed the spatial distribution pattern of the dominant woody plant populations and the interspecific association among dominant populations in the community. The results showed that in the scale of 1−20 m, the woody plants in this community generally follow the aggregation distribution, and the aggregation distribution decreases with increase of scale. Among the 6 dominant populations in the community, except for the random distribution of M. macclurei and Aphanamixis grandifolia, other populations were generally subject to aggregate distribution, with the highest aggregation of Litsea variabilis and Macaranga denticulata. In the plot, the big tree and the small tree are independent of each other, while the small tree and the young tree, the big tree and the young tree have a positive correlation in a small scale range, and there is no correlation in a large scale range. There is no correlation and negative correlation among the dominant populations in this community, only a small number of positive associations exist, and the community structure of artificial mixed forest of C. lanceolata and M. macclurei is still unstable.