茫荡山不同海拔小叶青冈林幼苗分布格局的研究  

Spatial distribution patterns of Cyclobalanopsis gracilis saplings on different altitudes in Mangdangshan mountain

作　　者：郑德祥[1] 廖晓丽[2] 

机构地区：[1]福建农林大学林学院,福建福州350002 [2]闽江学院,福建福州350002

出　　处：《中南林业科技大学学报》2013年第10期5-8,共4页Journal of Central South University of Forestry & Technology

基　　金：国家林业局林业公益性行业科研专项项目子课题(200704010);福建省教育厅资助项目(JA12112)

摘　　要：运用扩散系数(C)、丛生指数(I)、扩散指数(Iδ)、Cassie指标(Ca)、平均拥挤度与平均密度的比值(M*/x),Iwao回归和Taylor法则对小叶青冈幼苗的分布格局和动态进行分析。分析结果表明:小叶青冈幼苗的空间分布格局呈聚集分布,并且随着演替的进展,小叶青冈幼苗的聚集强度逐渐加强。Cyclobalanopsis gracilis forest is a kind of important species of mid-subtropical evergreen broad-leaved forest, the spatial distribution pattern and dynamics of Cyclobalanopsis gracilis saplings at different altitudes in Mangdangshan mountain were investigated by taking five aggregation indexes （C, I, Iδ, Cα, M^＊/x^-） as the evaluating indicators, and using Iwao＇s equtation and Taylor＇s model. The results indicate that the distribution patterns of saplings appeared clustered distributions; with the succession goingon, the trend of aggregation intensity of C. gracilis gradually strengthened.

关 键 词：小叶青冈 幼苗 空间分布格局 聚集度指标 

分 类 号：S792.189[农业科学—林木遗传育种]