期刊论文

Decade dynamics of species composition and diversity of mountaintop mossy dwarf forest on the Yangming Mountains,Hunan Province,China

Long, Y.-L.

中文

应用生态学报

1001-9332

2018

29

7

2111-2120

10.13287/j.1001-9332.201807.040

国家林业局“十三五”重点学科项目（201544） 湖南省教育厅“十二五”重点学科项目（2011-76）资助

本校为其他机构

于2005年在湖南省阳明山国家级自然保护区的阳明山山顶苔藓矮林聚集区建立了3块样地,从物种数量特征、物种重要值、径级结构、高度结构和物种多样性等方面分析了2005-2016年苔藓矮林物种组成和多样性的变化.结果表明:从2005年到2016年,样地内乔木层植物基径(DGH)≥1.0 cm的个体数量减少了30.9％,其中减少率最大的物种为荚莲,达到98.6％,减少率最小的物种是云锦杜鹃,为1.8％.样地内的物种数有所上升,但均匀度下降.除云锦杜鹃重要值增加外,其余各物种的重要值在10年后均大幅下降,云锦杜鹃为山顶苔藓矮林的优势种.矮林内物种的径级分布以1 cm等级排列,整个矮林的物种表现为小径木(1 cm≤DGH＜6 cm)...

Three monitoring plots were established in the Yangming Mountains mossy dwarf forest concentration zone in the Yangmingshan National Nature Reserve in Hunan Province in 2005. The changes of species composition and diversity during 2005-2016 were analyzed from species numerical characteristics, species importance value, diameter class structure, height structure, and species diversity. The results showed that from 2005 to 2016, the individual number for ≥1.0 cm diameter at ground height (DGH) in tree layer decreased by 30.9%. Viburnum dilatatum...