贵州南部伯乐树群落特征及其种间关系研究  

Community Characteristics and Interspecific Relationship of Bretschneidera sinensis in Southern Guizhou,China

作　　者：俞筱押[1] 田华林 郭治友[1] 

机构地区：[1]黔南民族师范学院 [2]黔南州林业科学研究所,贵州都匀558000

出　　处：《四川农业大学学报》2016年第1期29-33,共5页Journal of Sichuan Agricultural University

基　　金：贵州省农业攻关项目[黔科合NY字(2010)3059)]"伯乐树致濒机理及种质保存与培育技术研究"

摘　　要：【目的】研究贵州南部伯乐树群落特征,为贵州的伯乐树野生种群保护提供基础数据和保护对策支持。【方法】在踏查的基础上,对贵州南部的三都县、丹寨县和都匀市的伯乐树野生种群特征及其群落特征进行初步调查研究。【结果】贵州南部伯乐树群落物种丰富,共调查到维管植物149种,隶属于116属67科;科组成以樟科（Lauraceae）物种数最多,其次为壳斗科（Fagaceae）,仅调查到1个种的科为33个;属分布型以热带亚热带为主,占70.16%,未调查到特有属;伯乐树在乔木层的重要值仅为3.57,灌木层为0,草本层仅为5.00。径级结构分析显示,幼苗层（DBH〈3cm）的个体最多,占调查到个体数的83.58%,其次为大树（DBH〉15cm）,比例为11.19%,缺乏DBH在5~15cm的个体,属于衰退种群。种间关系分析显示伯乐树群落中表现为显著正相关（P〈0.05）的种对数为2 968对,说明群落的物种之间存在较多的竞争,与伯乐树显著正相关的物种有9种。【结论】贵州南部的伯乐树群落属于衰替种群,同时可能与其竞争的物种有9种。保护中应该控制个别种群的扩大和减少竞争。【Objective】The aim of the study was to investigate the community characteristics of Bretschneidera sinensis in southern Guizhou and to provide some basic data and references for protection of wild population of B.sinensis.【Method】Based on field investigation,the characteristics of B.sinensis community in Yaorenshan in Sandu county,Maobiling in Danzhai county and Doupengshan of Duyun city was studied.【Results】There were a lot of species in B.sinensis community.149 vascular plants（116genera and 67families）were investigated.In the investigation,most of species are Lauraceae plants.The major areal types of genera were tropics and subtropics.The important value of B.sinensis in the tree layer was 3.57.Moreover,the important value of shrub and herb layers was 0and 5.00,respectively.The individual of saplings（DBH〈3cm）was greatest（83.58%）.No individuals of saplings（5cm 〈DBH≤15cm）were found.We can concluded that the B.sinensis population was a decline type population with insufficient individuals of seedlings and saplings.【Conclusion】In order to protect B.sinensis better,some species that competed with B.sinensis should be removed and population size can be expanded by artificial breeding.

关 键 词：伯乐树 径级结构 种群特征 种间关系 

分 类 号：P935.1[天文地球—自然地理学]