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戴云山罗浮栲林群落主要树种空间分布格局
  2010-06-04    阅读:

戴云山罗浮栲林群落主要树种空间分布格局

林 珊1*,刘金福1,付达靓1,徐道炜1,黄志森2,何中声1

(1. 福建农林大学林学院,福建 福州 350002;2. 戴云山国家级自然保护区管理局,福建 泉州362503)

摘要:采用样方法对戴云山罗浮栲林群落进行调查,分析了罗浮栲林群落主要树种空间分布格局。结果表明:罗浮栲林群落乔木层主要树种中,小径阶(胸径≤10 cm)林木占总株数的56.9%,其中云山青冈、树参呈随机分布,其它主要树种均呈集群分布,与林分总体分布格局一致;中径阶(10 cm<胸径≤30 cm)林木占总株数的35.7%,其聚集程度降低;大径阶(胸径>30 cm)林木占总株数的7.4%,除罗浮栲呈集群分布,其余树种趋于随机分布,其分布格局主要与物种生物学特性和种群间的竞争排斥有关,且与物种的生境有密切联系。灌木层主要树种均呈集群分布。

关键词:罗浮栲群落;空间分布格局;戴云山

中图分类号: Q948.15       文献标识码:A         文章编号:1001 – 389X(2010)01 – 0000 - 04

Spatial distribution pattern of dominant trees of Castanopsis fabri
community in Daiyun Mountain

LIN Shan1,LIU Jin-fu1,FU Da-liang1,XU Dao-wei1,HUANG Zhi-sen2,HE Zhong-sheng1

( 1. College of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China;

2. Daiyun Mountain National Nature Reserve Administration Bureau,Quanzhou,Fujian,362503,China )

Abstract: The quadrate method was adopted to investigate community in Castanopsis fabri forest of Dainyun mountain,and the spatial distribution pattern of dominant trees in Castanopsis fabri community was analyzed in this paper. The results showed that:(1)small diameter class with DBH less than 10 cm accounted to 56.9% in the main species of tree layer in Castanopsis fabri community,with Cyclobalanopsis sessilifolia Dendropanax dentiger distributed in random distribution,the other main species distributed in contagious distribution,was similar to the distribution pattern of the whole forest.(2)medium diameter class with DBH range from 10 cm to 30 cm accounted to 35.7% in the main species of tree layer in Castanopsis fabri community had lower aggregation degree.(3)diameter class with DBH above 30 cm accounted to 7.4% in the main species of tree layer in Castanopsis fabri community,were distributed in random distribution of all the species excluded for Castanopsis fabric distributed in contagious distribution. The patterns were not only closely related to the biological characteristics and relationship between the competition and exclusion of populations,but also to the living environment of all the species.(4)All the tree species in shrub layer were contagious distribution.

Key words: Castanopsis fabri community;spatial distribution pattern;Daiyun Mountain