Ant Species Diversity on East Slope of Xishan Forest Park in Kunming

Using sample plot investigation method,the ant communities and species diversity of 22 sample plots on 5 vertical and 5 horizontal bands from east slope of Xishan Forest Park in Kunming were surveyed in dry season.The species numbers ranged between 2～13,the individual densities ranged between 6.2～1 808.2 heads·m-2,the species diversity indexes ranged between 0.049 9～1.554 9,the evenness indexes ranged between 0.072 0～0.724 0,and the predominant indexes ranged between 0.183 8～0.982 8.Comparative result showed that the species number,individual density and species diversity index of Xishan Forest Park were lower than those of Xishuangbanna Nature Reserve and Gaoligong Mountain Nature Reserve,but its evenness index was slightly higher than that of Xishuangbanna Nature Reserve.On vertical band,along with the increasing of altitude,the species numbers,species diversity indexes and evenness indexes were basically decreasing,but the predominant indexes were basically increasing.The regularity was most distinct on middle section of the Taihuasi vertical band,but there were no regularity on middle-north section of the Huatingsi vertical band and north section of the Gaoqiao vertical band.On horizontal band,only species diversity indexes and evenness indexes expressed decreasing from south to north at the altitude of 2 250 m.From the viewpoint of biodiversity conservation,the vegetations of Xishan Forest Park were best conserved on middle section of the Taihuasi vertical band among the 5 vertical bands,meanwhile the vegetations of the park had the best structure at middle-upper section with altitude of 2 250 m.On vertical bands,94.9% of the similarity coefficients among ant communities ranged between 0.00～0.25,meanwhile only 5.1% ranged between 0.25～0.50.On horizontal bands,87.2% of the similarity coefficients among ant communities ranged between 0.00～0.25,at the same time only 12.8% ranged between 0.25～0.50. It was thus clear that although the scope of Xishan Forest Park is not large,the ant communities are distinctly divergence both on vertical and horizontal bands.