长白山牛皮杜鹃群落特征与更新趋势分析

Analysis on community and regeneration trend of Rhododendron aureum in Changbai Mountain

为了长白山野生牛皮杜鹃的资源保护和可持续发展,对长白山自然保护区内海拔2000~2650 m处牛皮杜鹃群落特征与更新趋势进行调查和分析。结果表明:典型样地中调查出共79种植物,隶属于23科。牛皮杜鹃群落结构只有灌木层和草本层2层,因气候、土壤等原因,乔木在高山苔原带无法存活,因此无乔木层,牛皮杜鹃在群落中为绝对优势种,它的优势地位非常明显,所面临的种间竞争压力较小。通过种群更新的分析得知,牛皮杜鹃种群更新良好。随着苗龄的增长,实生苗逐渐死亡,萌生苗成为维持种群动态,促进种群发展的重要来源。

In order to protect wild Rh.aureum resources and sustainable development in Changbai Mountains,the community characteristics and regeneration trend of Rh.aureum community at the altitude from 2000 to 2650 m in Changbai Mountain Nature Reserve were investigated and analyzed.The results showed that a total of 79 species of plants in the typical plots investigated belonged to 23 families were investigated.The community structure of Rh.aureum had two layers only,shrub layer and herb layer.Due to climate and soil reasons,the trees could not survive in the alpine tundra zone,so there is no tree layer.Rh.aureum was the absolute dominant species in the community,which had a very obvious dominant position and faced with less inter-specific competition pressure.Through the analysis of population regeneration,it was known that the population regeneration of Rh.aureum was good.With the growth of seedling age,the seedling gradually died,and the budding seedling become an important source of maintaining population dynamics and promoting population development.