DOI: 10.1029/2011GB004268
Scopus记录号: 2-s2.0-84881077183
论文题名: Climate warming shifts carbon allocation from stemwood to roots in calcium-depleted spruce forests
作者: Lapenis A ; G ; , Lawrence G ; B ; , Heim A ; , Zheng C ; , Shortle W
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期: 1 起始页码: 101
结束页码: 107
语种: 英语
英文关键词: carbon allocation
; carbon sequestration
; forest
; roots
; soil
; spruce
Scopus关键词: Carbon allocation
; Carbon sequestration
; forest
; roots
; spruce
; Acidification
; Calcium
; Carbon
; Climate change
; Ecosystems
; Soils
; Vegetation
; Forestry
; acidification
; biomass allocation
; boreal forest
; calcium
; carbon sequestration
; coniferous forest
; global warming
; growing season
; growth rate
; NDVI
; phenology
; root
; Russian Federation
英文摘要: Increased greening of northern forests, measured by the Normalized Difference Vegetation Index (NDVI), has been presented as evidence that a warmer climate has increased both net primary productivity (NPP) and the carbon sink in boreal forests. However, higher production and greener canopies may accompany changes in carbon allocation that favor foliage or fine roots over less decomposable woody biomass. Furthermore, tree core data throughout mid- and northern latitudes have revealed a divergence problem (DP), a weakening in tree ring responses to warming over the past half century that is receiving increasing attention, but remains poorly understood. Often, the same sites exhibit trend inconsistency phenomenon (TIP), namely positive, or no trends in growing season NDVI where negative trends in tree ring indexes are observed. Here we studied growth of two Norway spruce (Picea abies) stands in western Russia that exhibited both the DP and TIP but were subject to soil acidification and calcium depletion of differing timing and severity. Our results link the decline in radial growth starting in 1980 to a shift in carbon allocation from wood to roots driven by a combination of two factors: (a) soil acidification that depleted calcium and impaired root function and (b) earlier onset of the growing season that further taxed the root system. The latter change in phenology appears to act as a trigger at both sites to push trees into nutrient limitation as the demand for Ca increased with the longer growing season, thereby causing the shift in carbon allocation. ©2012. American Geophysical Union. All Rights. Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77624
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Geography, University at Albany, 1400 Washington Ave., Albany, NY 12222, United States; New York Water Science Research Center, USGS, Troy, NY, United States; Klaus Büchel Environmental Consulting, Department of Geography, University of Zurich, Zürich, Switzerland; Department of Geography, Peking University, Beijing, China; USDA Forest Service Northern Research Station, Durham, NH, United States
Recommended Citation:
Lapenis A,G,, Lawrence G,et al. Climate warming shifts carbon allocation from stemwood to roots in calcium-depleted spruce forests[J]. Global Biogeochemical Cycles,2013-01-01,27(1)