亚热带常绿落叶阔叶混交林化香树种群的空间分布格局  

Spatial Distribution Pattern of Platycarya strobilacea Population in Subtropical Evergreen and Deciduous Broad-leaved Mixed Forest

作　　者：李杰 

机构地区：[1]华北水利水电大学艺术与设计学院,河南郑州450046

出　　处：《北方园艺》2018年第1期92-98,共7页Northern Horticulture

基　　金：国家自然科学基金资助项目(51609085);2016年度河南省高校科技创新人才支持计划资助项目(16HASTIT024);2017河南省科技攻关资助项目(172102210054)

摘　　要：基于3块1hm2森林动态监测样地数据,通过点格局方法分析了优势种化香树在完全随机模型和泊松异质性模型下的空间分布格局,并分析了化香树随着径级增加分布格局的变化。结果表明:完全随机模型下,3个样地中的化香树在整个研究尺度上全表现为聚集分布格局;泊松异质性模型剔除生境异质性后,1号样地中化香树随着尺度的增大,分布格局由聚集逐渐转变为均匀分布;2号和3号样地中化香树在整个研究尺度中则表现出随机分布格局;并且随着径级的增大化香树聚集程度下降。从现有的空间格局可以推断生境异质性和种内竞争对格局的形成起着重要作用。This study based on three pieces of 1 hm-2 forest dynamic plots,the point pattern method was used to analysis the spatial distribution pattern of the dominant species Platycarya strobilacea under the completely random model and poisson heterogeneity model.And the change of distribution pattern with increased diameter at breast height were also analyzed.The results showed that Platycarya strobilacea was the aggregation distribution pattern in the three plots under completely random model.After eliminating habitat heterogeneity by poisson heterogeneity model,the distribution pattern of Platycarya strobilacea gradually transformed form aggregation distribution into uniform distribution with the increase of scale in the first plot.Platycarya strobilacea was the random distribution pattern in the second and third plots.The aggregation degree of Platycarya strobilacea was dropped with increased diameter at breast height.The results showed that habitat heterogeneity and intraspecific competition played an important role in the formation of spatial distribution pattern.

关 键 词：点格局 完全随机模型 泊松异质性模型 优势种 

分 类 号：S718[农业科学—林学]