森林与环境学报2018，Vol.38Issue(1)：64-70,7.DOI:10.13324/j.cnki.jfcf.2018.01.011
亚热带常绿阔叶林枯立木与冠层结构的关系
Relationship between distribution of snags and canopy structure of subtropical evergreen broad-leaved forest
摘要
Abstract
Forest canopy structure effects understory environment factors and then affects tree growing .Base on plot survey and hemispherical photography technology, the abundance, diameter at breast height(DBH), distribution of snag and its controlling factors were studied to explore the formation and maintenance mechanism of community biodiversity of subtropical evergreen broad-leaved forest in the 10 hm2 permanent plot.The result showed that the snags mainly consist of small trees which the DBH and height were relatively small.Abundance of snags decreased with increasing canopy openness (CO), transmitted total light (Ttot), transmitted diffused light ( Tdif) and transmitted direct light (Tdir ) while DBH of snags increased with increasing CO, Ttot, and Tdir.Understory light played an important role in the formation of snags.The snags prefer to cluster together under the habitat with weak understory light and small CO.The abundance and DBH of snags were affected by Tdir while the distribution of snags were closely related to Tdif and Ttot.关键词
枯立木/林下光照/半球面影像/典范对应分析/林冠层Key words
snag/understory light/hemispherical photography/canonical correspondence analysis/canopy layer分类
资源环境引用本文复制引用
张璐,敬小丽,苏志尧,蔡琳颖,张星元..亚热带常绿阔叶林枯立木与冠层结构的关系[J].森林与环境学报,2018,38(1):64-70,7.基金项目
广东省自然科学基金项目(2015A030313403) （2015A030313403）
广东省省级林业发展及保护专项资金林业科技创新项目(2017KJCX037). （2017KJCX037）
