摘要
植物功能性状是目前生态学领域关注的热点问题之一,而比叶面积(Specific Leaf Area,SLA)和叶建成消耗(Leaf Construction Cost,LCC)则是功能性状中研究植物资源收获与支出的首选指标。树冠冠层结构与功能在方向上的不同可导致冠层功能性状空间分布的差异。以东灵山辽东栎为研究对象,分析了不同冠层不同方向部位叶片的功能性状以及影响因素。结果表明:在不同空间上,冠层上部的CC均高于冠层底部的,而SLA则相反;除上部与东向外,各方向叶片的比叶面积均有显著差异;热值则是影响二者的主要因素。冠层CC和SLA的空间异质性研究,对于在冠层水平上揭示植物资源利用具有重要意义。
Plant functional trait has been a hot topic of ecological research in recent years.Specific leaf ar-ea and leaf construction cost are important index factors in the research on harvest and expenditure of re-sources.The vertical and horizontal differences in the energy transmission and micrometeorological charac-teristics of forest canopy can lead to a considerable heterogeneity of functional traits.With Quercus liaotun-gensis,we studied the functional traits and their influence factors of different canopy positions.The results showed that CC on the top is higher than that at the bottom,but it is the other way around to SLA.Except the top and eastward parts,SLA in different canopy positions had significant differences;heat of combus-tion was the main influence factor for CC and SLA.
出处
《林业资源管理》
北大核心
2015年第4期145-150,178,共7页
Forest Resources Management
基金
中央级公益性科研院所基本科研业务费专项资金项目(RIF2012-09)
关键词
辽东栎
冠层
叶建成消耗
比叶面积
空间异质性
Quercus liaotungensis,forest canopy,specific leaf area,leaf construction cost,spatial heterogeneity
