文献类型：期刊文献

中文题名：广东省尾巨桉和马占相思人工林林下植物多样性动态变化

英文题名：The Dynamic Changes of Species Diversity of Eucalyptus urophylla×E.grandis and Acacia mangium Plantations in Gaoyao,Guangdong

作者：张宁南[1] 许涵[1] 徐大平[1] 李意德[1] 杨曾奖[1] 时忠杰[1]

第一作者：张宁南

机构：[1]中国林业科学研究院热带林业研究所

年份：2009

卷号：22

期号：2

起止页码：262-268

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家科技部社会公益研究项目"华南主要外来树种人工林生态环境影响的研究"(2003DIB3J116)

语种：中文

中文关键词：速生丰产林;物种多样性;尾巨桉;马占相思

外文关键词：fast-growing and high yield plantation; floristic diversity ;Eucalyptus urophylla × E. grandis; Acacia mangium

分类号：S718.5;S718.556

摘要：采用固定样地连续定位监测法对广东省高要市2种主要的速生丰产林树种尾巨桉和马占相思人工林群落的下木层、草本层的物种丰富度、Shannon-wiener物种多样性指数、Simpson物种多样性指数、Pielou均匀度指数及物种组成等参数自2004年到2007年的动态变化进行对比分析。结果表明:(1)与2004年相比,2007年尾巨桉林下木层的物种数稍有减少(减少3种,占2004年物种数的12.0%),草本层的物种数显著增多(增加16种,占2004年物种数的51.6%);下木层和草本层的Shannon-wiener物种多样性指数、Simpson物种多样性指数、Pielou均匀度指数均明显增大;2007年复查时,下木层消失的物种数比增加的物种数稍多,但草本层消失的物种数远少于增加的物种数。(2)马占相思林下木层和草本层的物种数均稍有减少(分别减少:3种,占2004年物种数的10.3%;4种,占2004年物种数的19.0%);下木层和草本层的Shannon-wiener物种多样性指数、Simpson物种多样性指数、Pielou均匀度指数均有减少或变化不明显;2007年复查时,下木层和草本层消失的物种数均比增加的物种数多。
Three permanent plots in Eucalyptus urophylla × E. grandis and Acacia mangium plantations were in Gaoyao, Guangdong province to measure the species diversities of the understory and herbage layers, wi set up th the employment of four diversity indexes： species abundance, Shannon-Wiener diversity, Simpson diversity and Pielou evenness indexes. Investigations were carried out in 2004 and 2007. The results are as follows ： （ 1 ） The number of species decreased in the understory layer of E. urophylla× E. grandis plantation from 25 in 2004 to 22 in 2007, while the number of species increased greatly in the herbage layer from 31 in 2004 to 47 in 2007; while all of Shannon-Wiener, Simpson diversity indexes and Pielou evenness index increased in these two layers. And the number of disappeared species in the understory layer was more than that of the newly appeared species in 2007, which was contrary to the herbage layer. （2） The number of species decreased in both the understory and the herbage layers of A. mangium plantation, while Shannon-Wiener, Simpson diversity indexes and Pielou evenness index decreased or changed a little. The numbers of disappeared species were more than that of the newly appeared species in both the understory and the herbage layers in 2007.