鄂西北红椿天然群落α多样性研究
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摘要
采用相邻格子样方法,分别对鄂西北竹山县和谷城县红椿天然群落的乔灌草层物种多样性进行研究,结果表明:红椿为群落优势种和建群种;竹山群落Shannon-Wiener指数、Simpson指数和均匀度分别为:灌木>草本>乔木;谷城Shannon-Wiener指数:草本>灌木>乔木,而Simpson指数和均匀度为:灌木>草本>乔木.谷城群落Shannon-Wiener指数、Simpson指数和和均匀度相对均略高于竹山.2个群落乔木层物种多样性差异显著,灌木层间差异不显著,草本层间差异极显著.不同群落内物种组成和多样性水平,在生境异质性下形成结构上的差异.
With quadrat-juxtaposing grid sampling method,the diversities of trees,shrubs and herbs were respectively studied in the natural T.ciliata communities in Zhushan county and Gucheng county in the Northwest of Hubei.The results showed that Toona ciliata was dominant and constructive species in the communities.The Shannon-Wiener index,Simpson index and evenness of Zhushan community were:shrub>herb>tree.In Gucheng community the Shannon-Wiener index was:herb>shrub>tree,while the Simpson index and evenness were:shrub>herb>tree.The Shannon-Wiener index,Simpson index and evenness of Gucheng community were slightly higher than those of Zhushan's.Of the 2 communities,the difference of species diversity of tree layers was significant,and the difference between shrub layers was not significant,while which difference of 2 shrub layers was insignificant.The species composition and diversity levels in different communities formed the structural differences under the condition of habitat heterogeneity.
With quadrat-juxtaposing grid sampling method,the diversities of trees,shrubs and herbs were respectively studied in the natural T.ciliata communities in Zhushan county and Gucheng county in the Northwest of Hubei.The results showed that Toona ciliata was dominant and constructive species in the communities.The Shannon-Wiener index,Simpson index and evenness of Zhushan community were:shrub>herb>tree.In Gucheng community the Shannon-Wiener index was:herb>shrub>tree,while the Simpson index and evenness were:shrub>herb>tree.The Shannon-Wiener index,Simpson index and evenness of Gucheng community were slightly higher than those of Zhushan's.Of the 2 communities,the difference of species diversity of tree layers was significant,and the difference between shrub layers was not significant,while which difference of 2 shrub layers was insignificant.The species composition and diversity levels in different communities formed the structural differences under the condition of habitat heterogeneity.
引文
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[4] 汪洋,闫魁星,滕家喜,等.鄂西北濒危植物红椿天然种群动态分析[J].植物资源与环境学报,2016,25(3):96-102.Wang Y,Yan K X,Teng J X,et al.Analysis on natural population dynamics of endangered species Toona ciliata in northwestern Hubei[J].Journal of Plant Resources and Environment,2016,25(3):96-102.
[5] 李飚,蒲云海,陈芬,等.湖北南河省级自然保护区种子植物区系研究[J].湖北林业科技,2012(2):4-10.Li B,Pu Y H,Chen F,et al.Study on spermatophyte flora of Nanhe Provincial Nature Reserve[J].Hubei Forestry Science and Technology,2012(2):4-10.
[6] 孟好军,刘建泉,刘贤德,等.祁连山青海云杉群落物种组成及α多样性垂直分布[J].生态环境学报,2011,20(3):435-440.Meng H J,Liu J Q,Liu X D,et al.Species composition and vertical distribution pattern of αdiversity of the Picea crassifolia community in Qilian Mountains of Gansu,China[J].Ecology and Environment Sciences,2011,20(3):435-440.
[7] 孙振均.生态学实验与野外实习指导[M].北京:化学工业出版社,2010.Sun Z J.Ecology experiment and guidance to fieldpractice[M].Beijing:Chemical Industry Press,2010.
[8] 汪洋,陈松,张琴琴,等.谷城不同红椿天然群落α多样性分析[J].园艺与种苗,2015(10):39-43.Wang Y,Chen S,Zhang Q Q,et al.Analysis on α diversity in different Toona ciliata communities of Gucheng region[J].Horticulture & Seed,2015(10):39-43.
[9] 周会萍,牛德奎,张继红,等.湿地松人工林群落林下植被物种多样性研究[J].江西农业大学学报,2006,28(1):78-83.Zhou H P,Niu D K,Zhang J H,et al.Studies on the species diversity in undergrowth vegetation of artificial P.elliottii forest communities[J].Acta Agriculturae Universitatis Jiangxiensis(Natural Sciences Edition),2006,28(1):78-83.
[10] 王兵,郑秋红,郭浩.基于Shannon-Wiener指数的中国森林物种多样性保育价值评估方法[J].林业科学研究,2008,21(2):268-274.Wang B,Zheng Q H,Guo H.Economic value assessment of forest species diversity conservation in China based on the Shannon-Wiener index[J].Forestry Research,2008,21(2):268-274.
[11] 宋玲玲,田青,李宗杰.岷山摩天岭北坡东南部植物群落α多样性与地形特征的关系[J].甘肃农业大学学报,2017,52(3):67-74.Song L L,Tian Q,Li Z J.Relationship between α diversity of plant community and topographic features in the southeast of Motianling northern slope in Min Mountain[J].Journal of Gansu Agricultural University,2017,52(3):67-74.
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