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| Species diversity of natural evergreen broadleaf forest community in Danxia landform area of Langshan Mountain |
| Kuang Jianjun1,Kuang Baigen1,Peng Zhenbao1,Xie Zhenhua2,Liu Ling1,Yuan Zhengke3,Wang Haiyun4 |
| 1.Nanyue Arboretum of Hunan,421900,Hengyang,Hunan;2.Hengyang Municipal Bureau of Forestry,421001,Hengyang,Hunan;3.Hunan Forestry Academy,410004,Changsha;4.Langshan Mountain Scenic Area Management office,422700,Shaoyang,Hunan:China |
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Abstract Using the sampling method to collect data,the important values for measure indicators,and using richness the index D2,Simpsom index D1,Shannon-Wiener index H′,Sheldon evenness index JSW and Pielou evenness index E as the measurement index,the community species diversity of 14 natural evergreen broad-leaved forest in Danxia landform area of Langshan Mountain were studied.The results showed that: 1) In similar habitat,along with the syngenesis to the subclimax stage,the change tendency of species diversity is increasable.In the climax community,the change tendency of species diversity of shrubs and herbs was increasable,but arbor have no obvious change.2) Community species diversity was changed with elevation change,besides general common change pattern,but also presents one kind of bimodal curve pattern.3) H′ and E have higher sensitivity than D1 and JSW.There is a significant similar function among with descries species diversity of arbors,shrubs,and herbs with D1 and H′,and descries species diversity of arbors with H′ and E,D1,and E,JSW and E,and descries species diversity of herb with JSW and E.It was concluded that elevation,habitat and succession affect community species diversity in Danxia landform,H′、D1、JSW and E can individually express Danxia landform community pecies diversity.
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Received: 20 April 2010
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