天宝岩自然保护区不同海拔天然柳杉种群空间分布格局研究  

A Study on the Spatial Distribution Pattern of Natural Cryptromeria fortunei Populations at Different Altitudes in the Tianbaoyan Nature Reserve

作　　者：李晓景[1] 何东进[1] 洪伟[1] 郑开基[1] 王其炳[1] 蔡昌棠 刘进山 

机构地区：[1]福建农林大学林学院,福建福州350002 [2]永安天宝岩国家自然保护区,福建永安366035

出　　处：《江西农业大学学报》2009年第3期422-426,共5页Acta Agriculturae Universitatis Jiangxiensis

基　　金：福建省自然科学基金项目(2008J0116);中国博士后科学基金项目(20060390182)

摘　　要：以永安天宝岩国家级自然保护区内天然柳杉群落调查资料为基础，采用聚集强度指标法、Iwao M^＊-x^-的回归与Taylor幂法则对不同海拔天然柳杉群落空间分布格局进行比较分析。结果表明，不同海拔天然柳杉林空间分布格局存在明显差异，其中在1200～1600m与1000—1200m海拔时呈现聚集分布，900～1000m为均匀分布。通过对不同海拔不同取样尺度下格局变化进行分析，25m^2取样单元时柳杉种群聚集程度最高。Based on the investigation of the Cryptromeria fortunei populations in the Tianbaoyan National Nature Reserve of Yong＇ an City, the concerntration class index, Iwao M^＊ - x^- and Taylor principle were used to research spatial distribution pattern of the Cryptromeria fortunei populations at different altitude levels. The result showed that at the altitude from 1 000 m to 1 200 m and from 1 200 m to 1 600 m,the Cryptromeriafortunei populations performed the pattern of clustering distribution, and at the altitude from 900 m to 1 000 m it showed uniform distribution. Analysis of the distribution pattern of the Cryptromeria fortunei at different sampiing sizes at different altitude levels, the aggregating intensity at the quadrat of 25 m^2 was the highest.

关 键 词：柳杉 天然林 空间分布格局 聚集度指标 天宝岩自然保护区 

分 类 号：S718.545[农业科学—林学]