北京林业大学学报2016，Vol.38Issue(12)：14-20,7.DOI:10.13332/j.1000-1522.20160258
不同尺度下长白山次生杨桦林群落系统发育结构研究
Multi-scale analysis on community phylogenetic structure of secondary Populus davidiana-Betula platyphylla forest in Changbai Mountains, northeastern China
摘要
Abstract
This study aims to test the phylogenetic structure of a secondary Populus davidiana-Betula platyphylla forest ( PBF) for multiple-spatial scale and ranked diameter class in Changbai Mountains of northeastern China, for the purpose of understanding the underlying mechanism of forest community assembly. We built a phylogeny tree based on 47 wooding species whose DBH≥1 cm. The results showed that with the increase of spatial scale, the dispersion degree of phylogenetic structure first increase then decrease; and with the increase of diameter class, the phylogenetic structure changed to overdispersion trend. These results suggested that the community was influenced by the effects of competitive exclusion and the abiotic filtering. Specifically, in small spatial scale, the phylogenetic structure is mainly decided by the effects of competitive exclusion; while in large spatial scale, the phylogenetic structure is mainly decided by the effects of abiotic filtering. By decomposing phylo-beta diversity with spatial factors and environmental factors, we find that environmental factors are powerful in explaining phylo-beta diversity. Among which, soil moisture and soil depth are the key factors to interpret phylo-beta diversity variance.关键词
群落构建/群落系统发育/空间尺度/径级结构/环境解释Key words
community assembly/community phylogeny/spatial scale/diameter-class distribution/environmental interpretation分类
农业科技引用本文复制引用
李晓宇,廖嘉星,侯嫚嫚,范秀华..不同尺度下长白山次生杨桦林群落系统发育结构研究[J].北京林业大学学报,2016,38(12):14-20,7.基金项目
国家自然科学基金项目(31670643、31600480)。 （31670643、31600480）
