DOI: 10.1111/gcb.12427
论文题名: Trends in seedling growth and carbon-use efficiency vary among broadleaf tree species along a latitudinal transect in eastern North America
作者: Dillaway D.N. ; Kruger E.L.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 3 起始页码: 908
结束页码: 922
语种: 英语
英文关键词: Boreal forest
; Carbon-use efficiency
; Climate
; Deciduous broadleaf trees
; Growth
; Photosynthesis
; Respiration
; Temperate forest
; Temperature
Scopus关键词: boreal forest
; carbon dioxide
; deciduous tree
; environmental disturbance
; environmental factor
; growth rate
; growth response
; photosynthesis
; respiration
; seedling
; temperate forest
; temperature effect
; North America
; Betula papyrifera
; Liquidambar
; Liquidambar styraciflua
; Populus
; Populus deltoides
; Populus tremuloides
; carbon
; article
; birch
; breathing
; carbon-use efficiency
; climate
; climate change
; deciduous broadleaf trees
; growth
; growth, development and aging
; Liquidambar
; metabolism
; North America
; photosynthesis
; plant leaf
; Populus
; seedling
; taiga
; temperate deciduous forest
; temperature
; boreal forest
; carbon-use efficiency
; climate
; deciduous broadleaf trees
; growth
; photosynthesis
; respiration
; temperate forest
; temperature
; Betula
; Carbon
; Climate Change
; Liquidambar
; North America
; Photosynthesis
; Plant Leaves
; Populus
; Seedling
; Temperature
英文摘要: Factors constraining the geographic ranges of broadleaf tree species in eastern North America were examined in common gardens along a ~1500 km latitudinal transect travers in grange boundaries of four target species: trembling aspen (Populus tremuloides) and paper birch (Betula papyrifera) to the north vs. eastern cottonwood (Populus deltoides) and sweet gum (Liquidambar styraciflua) to the south. In 2006 and 2007, carbon-use efficiency (CUE), the proportion of assimilated carbon retained in biomass, was estimated for seedlings of the four species as the quotient of relative growth rate (RGR) and photosynthesis per unit tree mass (Atree). In aspen and birch, CUE and RGR declined significantly with increasing growth temperature, which spanned 9 °C across gardens and years. The 37% (relative) CUE decrease from coolest to warmest garden correlated with increases in leaf nighttime respiration (Rleaf) and the ratio of Rleaf to leaf photosynthesis (R%A). For cottonwood and sweet gum, however, similar increases in Rleaf and R%A accompanied modest CUE declines, implying that processes other than Rleaf were responsible for species differences in CUE's temperature response. Our findings illustrate marked taxonomic variation, at least among young trees, in the thermal sensitivity of CUE, and point to potentially negative consequences of climate warming for the carbon balance, competitive ability, and persistence of two foundation species in northern temperate and boreal forests. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61982
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, Madison, WI 53706, United States; Unity College, Unity, ME 04988, United States
Recommended Citation:
Dillaway D.N.,Kruger E.L.. Trends in seedling growth and carbon-use efficiency vary among broadleaf tree species along a latitudinal transect in eastern North America[J]. Global Change Biology,2014-01-01,20(3)