Question：

1）How does the local abundance and range size relationship of woody plant species in a mountain?

2）How does the relationship related with the proposed hypothesis ?

3）How do species life history traits affect the abundance and range size of the species analyzed?

Location：

Mt. Dalaoling, a subtropical mountain in the central China

Method：

We defined two measures of abundance: Local mean abundance, True mean abundance. We estimated range size at two spatial scales: regional and national, and two measures of regional: area-percentage、extent. We defined the niche breadth of three gradients of topographic features, direction, angle, and location. And eight life-history traits: tree height, seed weight, growth-form, dispersal mode, fruit type, seed appendage, the month of flower onset, and deciduous trait.

Result：

Both TMA and LMA are positively correlated with two measures of regional range sizes. Niche breadth was significantly and positively correlated with abundance measured as TMA and LMA, and two measures of regional range sizes. However, the relationships between niche breadth and abundance turned negative when the sampling effect was controlled. Tree height was positively related with TMA, niche breadth and occurrence at all scales. For the leaf trait, evergreen trees were significantly more abundant than the deciduous trees, given the same species ranges.