甘肃小陇山锐齿栎林空间分布格局分析  

Study on the Spatial Distribution Pattern of Quercus aliena var. acuteserata Population in Xiaolongshan,Gansu

作　　者：巨天珍[1] 郝青[1] 葛建团[1] 张宋智 李沛祺[1] 康丽丹[1] 王立峰[1] 赵继超[1] 

机构地区：[1]西北师范大学地理与环境科学学院,兰州730070 [2]天水小陇山林科所,甘肃天水741022

出　　处：《林业资源管理》2010年第4期27-30,44,共5页Forest Resources Management

基　　金：甘肃省教育厅科研项目"西北地区天然林资源保护工程生态学研究"(031-28)

摘　　要：锐齿栎是小陇山国家级自然保护区主要植被类型,其分布格局是判断林型恢复与否的指标之一。本文通过方差/均值、负二项参数、丛生指数、Cassie指数、聚块性指数等指标对小陇山锐齿栎种群的分布格局进行了分析。结果表明:锐齿栎现阶段年龄结构不合理,属稳定型种群;其分布格局总体属聚集分布,且聚集强度较高,随林分成熟度的升高,聚集强度逐渐下降。Quercus aliena var.acuteserata is the main vegetation type of Xiaolongshan national nature reserve and its distribution pattern is one of the indexes to judge if the forest type recovers or not.In this paper,v/m ratio,negative binomial parameter,clumping index,cassie index and patch index are used to analyze the spatial pattern of Quercus aliena var.acuteserata forest at Xiaolongshan.The results show that the age structure of Quercus aliena var.acuteserata population is unreasonable at present,which belongs to stable population.The distribution pattern of this population takes the aggregation distribution,and the aggregation intensity is high,but it decreases with the increase of the maturity of the stands.

关 键 词：锐齿栎种群 空间分布格局 小陇山 

分 类 号：S718.55[农业科学—林学]