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纳板河保护区不同林分群落乔木物种多样性研究.doc

发布:2017-02-26约9.11千字共13页下载文档
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纳板河保护区不同林分群落乔木物种多样性研究   摘要 不同林分群落乔木物种多样性的研究依据于纳板河国家级自然保护区内的6类不同林分群落的调查研究,描述林分内部的树种种类、直径和数量特征,总结林分的特征,做出相关科学合理的分析。对于林分直径结构的描述,由于树种组成结构是林分结构的基础特征,则先从样地树种的统计分析研究林分,再借助物种丰富度(Margalef指数)、物种多样性(Shannon-Weiner指数和Simpson指数)、物种均匀度(Pielou指数)对样地中不同林分群落树种进行深度解析,从而精确地确定此次调查中的不同林分群落乔木物种多样性特征及规律,进而分析乔木物种多样性的特征对纳板河自然保护区整体森林结构的影响,以便于进行全面科学的监测。   关键词 物种多样性;RDi;RFi;RPi;RIVi   中图分类号 S718.54 文献标识码 A 文章编号 1007-5739(2016)20-0110-05   Research on Different Forest Community Tree Species Diversity in Naban River Nature Reserve   ZHANG Yuan-rong XU Yan-hong * WANG Wei-wei LIU Feng   (College of Forestry,Southwest Forestry University,Kunming Yunnan 650224)   Abstract Based on the investigation about 6 kinds of different forest community of Naban River Nature Reserve, tree species diversity of different forest community was studied.The paper described the forest type, diameter and quantity characteristics, summarized the characteristics of the forest and made scientific and rational analysis.For the description of stand diameter structure, because the tree structure was the foundation of forest stand structure characters, this article firstly analyzed sample tree species, and then analyzed different forest species in the sample area with the aid of species richness (Margalef index), species diversity (Shannon - Weiner index and Simpson index) and species evenness(Pielou index).Thus ,it was accurately determined that the characteristics and regularity of tree species diversity of different forest community.The paper analyzed the influence of the features of tree species diversity on the whole forest structure of Naban River Nature Reserve.It was conducive to a comprehensive and scientific monitoring.   Key words species diversity;RDi;RFi;RPi;RIVi   林分结构是指一个林分或整个林分经营单位的树种、株数、年龄、径级及林层等构成的类型,林分的树种组成、年龄结构、直径结构、树高结构、密度和蓄积等指标的描述,这些表示方法对于林分数量特征的描述是不可缺少的,它提供了进行数量测定的基础,最适合于森林资源清查,因为它可以从数量上表示林分的特征和生产力信息[1]。   人工纯林的整体功能远不及天然林和次生林,物种多样性剧烈下降、病虫害大暴发等问题使人们更多地关注人工林经营的可持续性。如何调控森林经理方式才能达到森林生产力的持续与物种
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