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研究了高黎贡山东坡水平带蚂蚁群落特征 ,结果表明 ,除中南段 2 5 0 0 m等高线外 ,东坡各水平带的不同位置均有特有种。在 10 0 0 m、15 0 0 m、2 0 0 0 m、2 5 0 0 m等高线上 ,从北到南特有种数目依次递增 ,但北段 15 0 0 m和 2 0 0 0 m等高线出现特有种增高例外。在东坡不同海拔等高线上 ,大多数物种只在 1个样地中表现为优势种 ,北段与南段的优势种通常不同。在 10 0 0 m和 2 0 0 0m等高线上北段的优势种多于南段 ,而在 15 0 0 m等高线上南段优势种多于北段 ,2 5 0 0 m等高线上不同地段优势种趋于相等。东坡水平带上物种数目和密度表现出普遍规律性。从北到南 ,10 0 0 m和 2 5 0 0 m等高线上物种数目和密度依次递增 ,在 15 0 0 m等高线上物种数目和密度依次递减。在10 0 0 m等高线上优势度、多样性和均匀度具有明显规律性 ,从北到南 ,优势度依次递减 ,多样性和均匀度依次递增 ,但在北段出现例外。在 15 0 0 m、2 0 0 0 m和 2 5 0 0 m等高线上 ,蚂蚁群落的优势度、多样性和均匀度缺乏规律性 ,可能与植被的次生化和片断化等因素有关。尽管东坡水平带上同一海拔植被类型相似 ,但是蚂蚁群落之间差异显著 ,相似性系数在 0～ 0 .5 0之间。山体下部10 0 0 m等高线上蚂蚁群落之间相似性较大 ,相似性系数在 0
The characteristics of ants in the horizontal belt of the east slope of the Gaoligong Mountains were studied. The results showed that there were endemic species in each position of the east slope, except for the contour of 2,500 m in the mid-south section. On the contours of 100 m, 150 m, 200 m, and 2500 m, the number of species from North to Nantes increased successively, but the northern sections of 15 0 0 m and 20 000 m Contour lines appear exceptionally high species. Most of the species showed the dominant species in only one plot at different elevations of the east slope, while the dominant species in the northern and southern segments usually differed. The dominant species in the northern segment of the 10 000 m and 200 m contour lines are more than the southern segment, whereas the dominant species in the southern segment of the 1500 m contour line are more than the northern segment and 2.500 m in height The dominant species in different locations tend to be equal. The number and density of species on the eastern slope show a general pattern. From north to south, the number and density of species on the contours of 100 m and 2500 m increased successively, and the number and density of species decreased gradually in the contour of 1500 m. The dominance, diversity and evenness in the contour of 100 m have obvious regularity. From north to south, the dominance decreases in turn, while the diversity and evenness increase in sequence, but there is an exception in the northern segment. On the contours of 150 m, 200 m and 2500 m, the dominance, diversity and evenness of the ants communities are not regular, which may be related to the secondary and fragmentation of vegetation. Although the vegetation types on the east slope are similar with the same altitude, the differences between ants communities are significant with the similarity coefficient between 0 and 0.05. The similarity between the ant communities on the contour of 10 000 m in the lower part of the mountain is relatively large, and the similarity coefficient is 0