藏中矿区植物种群生态位特征研究  

STUDY ON NICHE CHARACTERISTICS OF PLANT POPULATIONS IN CENTRAL MINING AREA OF TIBET

作　　者：赵玉红[1] 张涪平[1] 王忠红[1] 

机构地区：[1]西藏农牧学院,西藏林芝860000

出　　处：《青海草业》2009年第4期2-7,共6页Qinghai Prataculture

基　　金："十一五"国家科技支撑计划重点项目(2007BAC06B05);西藏农牧学院青年基金

摘　　要：本文采用样方法以藏中矿区的3种群落为研究对象,对样地的植物种群进行系统调查,并计算其主要植物的重要值、生态位宽度和生态位重叠值。结果表明,不同群落类型优势种非常明显,并且具有较高的生态位宽度和生态位重叠。高寒矿区各植物优势种群与其它种群之间竞争激烈,群落结构极不稳定,群落可能正处于正向演替和逆向演替的拐点。Plant community of sampling plots were investigated through quadrat sampling method in 3 community by monitoring the characteristics of important value , niche breadth and niche overlap of main species. The results showed that dominant species of each community was obvious and has high niche breadth and niche o- verlap. The competition was acute between the dominant population and other populations. Structure of communities was extreme unstable. Communities dominant species of each community could be inflection point of forward succession and regressive succession.

关 键 词：藏中矿区 重要值 生态位宽度 生态位重叠值 

分 类 号：S602.4[农业科学—园艺学]