Community Characteristics of Styrax tonkinensis in Different Distribution Regions

LI Yin-gang; LIU Xin-hong; ZHAO Xun; XU Liang; HUANG Yong; YANG Cheng-hua; YANG Zhi-guo

In August and September 2009, the plots were established in Mangdang mountain of Nanping, Fujian(Ⅰ), Yaoren mountain of Congjiang, Guizhou(Ⅱ), Dayao mountain of Jinxiu, Guangxi(Ⅲ), Dawei mountain of Pingbian(Ⅳ)and Nanru mountain of Xishuangbanan(Ⅴ), Yunnan, which represent various type of distribution region, respectively. An investigation was made on the community structure and species diversity. The result indicated that there were fewer species in Styrax tonkinensis community in the five distribution regions. Styrax tonkinensis and the species of Fagaceae, Pinaceae, Taxodiaceae, Betulaceae, Hamamelidaceae, Theaceae were the dominant population in tree layer, or Styrax tonkinensis was accompanying specie. There were fewer species in shrub layer and herb layer, and some interlayer species between shrub layer and herb layer. The ranking of community richness index (Dma) was tree layer, shrub layer and herb layer. Dominance index (D) and diversity index (H) were smaller, the order was Ⅴ, Ⅱ, Ⅳ, Ⅰ and Ⅲ. The climate difference of distribution region may result in small common species and similarity coefficient among community.

1. Zhejiang Forestry Academy, Hangzhou 310023, Zhejiang, China

2. Fujian Academy of Forestry, Fuzhou 350012, Fujian, China

3. Guizhou Academy of Forestry, Guiyang 550005, Guizhou, China

4. Hekou Branch of Administration Bureau of Daweishan National Nature Reserve, Hekou 661300 Yunnan, China

Received Date: 2010-09-02

Abstract: In August and September 2009, the plots were established in Mangdang mountain of Nanping, Fujian(Ⅰ), Yaoren mountain of Congjiang, Guizhou(Ⅱ), Dayao mountain of Jinxiu, Guangxi(Ⅲ), Dawei mountain of Pingbian(Ⅳ)and Nanru mountain of Xishuangbanan(Ⅴ), Yunnan, which represent various type of distribution region, respectively. An investigation was made on the community structure and species diversity. The result indicated that there were fewer species in Styrax tonkinensis community in the five distribution regions. Styrax tonkinensis and the species of Fagaceae, Pinaceae, Taxodiaceae, Betulaceae, Hamamelidaceae, Theaceae were the dominant population in tree layer, or Styrax tonkinensis was accompanying specie. There were fewer species in shrub layer and herb layer, and some interlayer species between shrub layer and herb layer. The ranking of community richness index (Dma) was tree layer, shrub layer and herb layer. Dominance index (D) and diversity index (H) were smaller, the order was Ⅴ, Ⅱ, Ⅳ, Ⅰ and Ⅲ. The climate difference of distribution region may result in small common species and similarity coefficient among community.

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Community Characteristics of Styrax tonkinensis in Different Distribution Regions

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