globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.12193
论文题名:
Spatial relationship between climatologies and changes in global vegetation activity
作者: de Jong R.; Schaepman M.E.; Furrer R.; de Bruin S.; Verburg P.H.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期:6
起始页码: 1953
结束页码: 1964
语种: 英语
英文关键词: Climate- and human-induced change ; Climatologies ; Gaussian random field ; Growth constraints ; Regression ; Spatial additive model ; Vegetation-activity trends
Scopus关键词: air temperature ; climate change ; climatology ; land cover ; land use change ; precipitation (climatology) ; regression analysis ; solar radiation ; spatial analysis ; spatial variation ; temporal variation ; vegetation index ; Argentina ; article ; Australia ; climate ; plant ; theoretical model ; Argentina ; Australia ; Climate ; Models, Theoretical ; Plants ; Argentina ; Australia
英文摘要: Vegetation forms a main component of the terrestrial biosphere and plays a crucial role in land-cover and climate-related studies. Activity of vegetation systems is commonly quantified using remotely sensed vegetation indices (VI). Extensive reports on temporal trends over the past decades in time series of such indices can be found in literature. However, little remains known about the processes underlying these changes at large spatial scales. In this study, we aimed at quantifying the spatial relationship between changes in potential climatic growth constraints (i.e. temperature, precipitation and incident solar radiation) and changes in vegetation activity (1982-2008). We demonstrate an additive spatial model with 0.5° resolution, consisting of a regression component representing climate-associated effects and a spatially correlated field representing the combined influence of other factors, including land-use change. Little over 50% of the spatial variance could be attributed to changes in climatologies; conspicuously, many greening trends and browning hotspots in Argentina and Australia. The nonassociated model component may contain large-scale human interventions, feedback mechanisms or natural effects, which were not captured by the climatologies. Browning hotspots in this component were especially found in subequatorial Africa. On the scale of land-cover types, strongest relationships between climatologies and vegetation activity were found in forests, including indications for browning under warming conditions (analogous to the divergence issue discussed in dendroclimatology). © 2013 Blackwell Publishing Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62434
Appears in Collections:影响、适应和脆弱性

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作者单位: Remote Sensing Laboratories, University of Zurich, Wintherthurerstrasse 190, Zurich, 8057, Switzerland; Institute of Mathematics, University of Zurich, Wintherthurerstrasse 190, Zurich, 8057, Switzerland; Laboratory of Geo-Information Science and Remote Sensing, Wageningen University, PO Box 47, Wageningen, 6700AA, Netherlands; Institute for Environmental Studies, VU University Amsterdam, De Boelelaan 1087, Amsterdam, 1081HV, Netherlands

Recommended Citation:
de Jong R.,Schaepman M.E.,Furrer R.,et al. Spatial relationship between climatologies and changes in global vegetation activity[J]. Global Change Biology,2013-01-01,19(6)
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