采用数量化群落分类法分析哈巴雪山植物群落类型和植物物种多样性沿海拔梯度的分布格局.结果表明:采用等级聚类和非度量多维标度排序方法可将云南哈巴雪山植物群落沿海拔梯度划分为6个植被亚型；哈巴雪山的植物多样性沿海拔的分布格局受“中间地带效应”影响较为明显,而与Rapoport海拔法则不甚相符；物种丰富度总体上符合单峰格局,但在中海拔地段物种丰富度谷、峰值连续出现；α多样性指数中的Shannon-Wiener指数曲线符合单峰格局,β多样性指数基本上也符合单峰分布,但中海拔地段起伏较大；哈巴雪山物种丰富度以及多样性指数沿海拔梯度呈现出较为复杂的规律,反映出山地小环境多样性特征,具体表现为群落类型间沿海拔梯度的交错分布和相互替代现象.%The plant community types and spatial differentiation of plant species diversity along the altitudinal gradient in the Habaxueshan Mountain, Northwest Yunnan was analyzed using quantitative methods based on the 72 quadrat data. The result showed that: The plant communities of Habaxueshan Mountain could be grouped into 6 vegetation types with the hierarchical cluster analysis and the non-metric multidimensional scaling. The plant species diversity in Habaxueshan Mountain was influenced more by " the mid-domain Effect" than " Rapoport's elevation rule". The altitudinal pattern of species richness generally presented the single hump pattern and fluctuated in mid-elevation zone; both Shannon-Wiener and Cody indexes presented the single hump pattern on the whole, and showed wavy fluctuation in mid-elevation zone. Generally , the altitudinal pattern of plant diversity in Habaxueshan Mountain presented a complicate feature which indicated the diversity of micro-habitat, and the complication also manifested by the alternative distribution and substitution effect of plant communities.
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