气候变化领域集成服务门户(CCPortal): Foliar morphology and spatial distribution in five-year-old plantations of Betula alnoides

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DOI	10.1016/j.foreco.2018.09.052
	Foliar morphology and spatial distribution in five-year-old plantations of Betula alnoides
	Wang C.-S.; Guo J.-J.; Hein S.; Wang H.; Zhao Z.-G.; Zeng J.
发表日期	2019
ISSN	0378-1127
起始页码	514
结束页码	521
卷号	432
英文摘要	Foliage spatial distribution and morphological variation within crowns reflect the adjustment of a tree to acclimatise to different microenvironments within crowns and stands. They play important roles in the light use efficiency, carbon assimilation and photosynthesis capacity of the whole tree. In this study, leaf quantity and size at the tree and crown layer levels, and leaf morphology across crown layers, sectors and zones, from 18 trees were investigated in five-year-old Betula alnoides plantations with six planting densities. The results showed that the vertical distributions of leaf number, leaf area index, cumulative branch cross sectional area and leaf area and their ratios were skewed towards the upper crown layers, especially for high planting densities. There was a tendency for leaf size (leaf length, width, perimeter and area) and leaf dry mass to increase from lower to upper crown layer and also from the inner to outer crown zones. The leaf shape factor was larger, and the ratio of leaf length to width and specific leaf area were much smaller, for leaves in the outer and upper crown positions. Leaves in the southern and eastern sectors were smaller than those in the northern and western sectors, but leaf length to width ratio, leaf shape factor and specific leaf area did not differ significantly among four crown sectors. In addition, planting density had no significant effect on leaf related traits at the individual tree and crown layer levels, and leaf morphology also did not vary regularly with planting density, but the specific leaf area was significantly negatively correlated with planting density. However, the interactions between planting density and crown layer, crown sector and crown zone, and among planting density, crown layer and crown zone, were significant. The findings confirmed the acclimation of leaf distribution and morphology to different microenvironments, and provided baseline information for plantation management of B. alnoides and other valuable hardwood species in southern China and other regions with similar climate conditions. © 2018 Elsevier B.V.
英文关键词	Betula alnoides; Crown structure; Leaf morphology traits; Leaf vertical distribution; Planting density; Specific leaf area
语种	英语
scopus关键词	Hardwoods; Morphology; Spatial distribution; Betula alnoides; Crown structure; Leaf morphology; Planting density; Specific leaf area; Vertical distributions; Forestry; acclimation; canopy architecture; climate conditions; dicotyledon; leaf area; leaf morphology; photosynthesis; spatial distribution; stand structure; vertical distribution; Anatomy; Area; Betula Alnoides; Density; Forestry; Hardwoods; Planting; Trees; China; Betula alnoides
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156369
作者单位	Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 51050, China; University of Applied Forest Sciences, Schadenweilerhof, Rottenburg, 72108, Germany
推荐引用方式 GB/T 7714	Wang C.-S.,Guo J.-J.,Hein S.,et al. Foliar morphology and spatial distribution in five-year-old plantations of Betula alnoides[J],2019,432.
APA	Wang C.-S.,Guo J.-J.,Hein S.,Wang H.,Zhao Z.-G.,&Zeng J..(2019).Foliar morphology and spatial distribution in five-year-old plantations of Betula alnoides.Forest Ecology and Management,432.
MLA	Wang C.-S.,et al."Foliar morphology and spatial distribution in five-year-old plantations of Betula alnoides".Forest Ecology and Management 432(2019).