桂林岩溶石山阴香种群的空间分布格局

Spatial distribution pattern of Cinnamomum burmannii population in karst hills of Guilin

通过野外调查,选取6块有代表性的样地,采用点格局分析方法研究了阴香种群的空间分布格局。结果表明,6块样地中,Q1和Q5样地阴香种群多数尺度上表现为集群分布,Q2和Q3以随机分布为主,Q4和Q6样地少数尺度上为集群分布,多数尺度上呈随机分布。阴香种群的空间分布格局与物种本身的繁殖特性、生境条件以及种内种间竞争等密切相关,由岩石的覆盖而形成的小环境对种群的分布格局类型有影响。点格局分析法较好地体现了不同尺度下阴香种群的分布格局特征。

Based on data collected from 6 representative plots, the spatial distribution pattern of Cinnamomum burmannii population in karst hills of Guilin were analyzed with method of point pattern analysis. The results indicated that the sampling plots Q1 and Q5 were dumping distribution at most scales; the plots Q2 and Q3 mainly showed random distribution; the plots 0.4 and 0.6 showed clumping distribution at small scales and random distribution at most scales. The distribution pattern of C. burmannii population was related to its own propagation characteristics, habitat conditions and competition between species and within species. The microenvironments formed from the rock coverage affected the type of distribution pattern of C. burmannii population. The method of point pattern analysis showed the distribution pattern characteristics of C. burmannii population at different spatial scales.