关帝山文峪河流域上游河岸林生物多样性垂直分布格局研究

笔者通过测算丰富度指数、均匀度指数和多样性指数,分析了关帝山文峪河流域上游河岸林不同群落类型的生物多样性垂直分布,得出3种指数随海拔的垂直变化皆有一致的表现,即生物多样性在中等海拔处达到最大,符合“中间膨胀”规律（mid-altitude bulge）,也就是在中度海拔处生物多样性最高,这是群落物种组成和人为干扰双重作用的结果.

Study on Vertical Distribution Pattern of Riparian Forest Biodiversity in Wenyu Watershed Upstream

Riparian forest community biodiversity was analyzed with richness index, evenness index and diversity index in Wenyu watershed upstream. Three indexes had consistent trend that biodiversity reached the biggest in medium altitude. The trend accorded with mid-altitude bulge rule that biodiversity was the biggest in medium altitude and it was the result of community species composition and human influence.