DOI: 10.1111/gcb.12681
论文题名: A global assessment of forest surface albedo and its relationships with climate and atmospheric nitrogen deposition
作者: Leonardi S. ; Magnani F. ; Nolè A. ; Van Noije T. ; Borghetti M.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 1 起始页码: 287
结束页码: 298
语种: 英语
英文关键词: Albedo
; Climate
; Forest
; MODIS
; Nitrogen deposition
Scopus关键词: Coniferophyta
; nitrogen
; atmosphere
; chemistry
; climate
; computer simulation
; forest
; metabolism
; regression analysis
; species difference
; sunlight
; theoretical model
; Atmosphere
; Climate
; Computer Simulation
; Forests
; Models, Theoretical
; Nitrogen
; Regression Analysis
; Species Specificity
; Sunlight
英文摘要: We present a global assessment of the relationships between the short-wave surface albedo of forests, derived from the MODIS satellite instrument product at 0.5° spatial resolution, with simulated atmospheric nitrogen deposition rates (Ndep), and climatic variables (mean annual temperature Tm and total annual precipitation P), compiled at the same spatial resolution. The analysis was performed on the following five forest plant functional types (PFTs): evergreen needle-leaf forests (ENF); evergreen broad-leaf forests (EBF); deciduous needle-leaf forests (DNF); deciduous broad-leaf forests (DBF); and mixed-forests (MF). Generalized additive models (GAMs) were applied in the exploratory analysis to assess the functional nature of short-wave surface albedo relations to environmental variables. The analysis showed evident correlations of albedo with environmental predictors when data were pooled across PFTs: Tm and Ndep displayed a positive relationship with forest albedo, while a negative relationship was detected with P. These correlations are primarily due to surface albedo differences between conifer and broad-leaf species, and different species geographical distributions. However, the analysis performed within individual PFTs, strengthened by attempts to select 'pure' pixels in terms of species composition, showed significant correlations with annual precipitation and nitrogen deposition, pointing toward the potential effect of environmental variables on forest surface albedo at the ecosystem level. Overall, our global assessment emphasizes the importance of elucidating the ecological mechanisms that link environmental conditions and forest canopy properties for an improved parameterization of surface albedo in climate models. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61914
Appears in Collections: 影响、适应和脆弱性
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作者单位: Dipartimento di Bioscienze, Università di Parma, Parma, Italy; Dipartimento di Scienze Agrarie, Università di Bologna, Bologna, Italy; Scuola di Scienze Agrarie, Forestali, Alimentari e dell'Ambiente, Università della Basilicata, Potenza, Italy; Royal Netherlands Meteorological Institute (KNMI), De Bilt, Netherlands
Recommended Citation:
Leonardi S.,Magnani F.,Nolè A.,et al. A global assessment of forest surface albedo and its relationships with climate and atmospheric nitrogen deposition[J]. Global Change Biology,2015-01-01,21(1)