关键词: 苔藓植物, 多样性, 区系, 环境因子, 典范对应分析

Abstract: In order to deeply understand the bryophyte resources of Zijin Mountain National Forest Park, a field survey of bryophytes in Nanjing Zijin Mountain was carried out, and canonical correspondence analysis (CCA) was used to study the relationship between the distribution of bryophytes and the environment. The results were as follows. The survey recorded 65 species of bryophytes in 37 genera of 23 families. Brachytheciaceae, Pottiaceae, Thuidiaceae, and Entodontaceae were the dominant families (≥6 species). Entodon, Brachythecium, Plagiomnium, and Bryum were the dominant genera (≥4 species). The bryophyte habitat was mainly soil, with the least trees. The life-forms of bryophytes were dominated by weft and turf, accounting for 46.15% and 35.38%, respectively. The flora was dominated by temperate and East Asian components, showing obvious transitional characteristics. The CCA ranking results showed that the humidity, aspect and elevation were the main environmental factors affecting the distribution of bryophytes.

Key words: bryophytes, diversity, flora, environmental factors, canonical correspondence analysis