Recent shift in Eurasian boreal forest greening response may be associated with warmer and drier summers

Terrestrial ecosystems in the northern high latitudes are currently experiencing drastic warming, and recent studies suggest that boreal forests may be increasingly vulnerable to warming‐related factors, including temperature‐induced drought stress as well as shifts in fire regimes and insect outbreaks. Here we analyze interannual relationships in boreal forest greening and climate over the last three decades using newly available satellite vegetation data. Our results suggest that due to continued summer warming in the absence of sustained increases in precipitation, a turning point has been reached around the mid‐1990s that shifted western central Eurasian boreal forests into a warmer and drier regime. This may be the leading cause for the emergence of large‐scale negative correlations between summer temperatures and forest greenness. If such a regime shift would be sustained, the dieback of the boreal forest induced by heat and drought stress as predicted by vegetation models may proceed more rapidly than anticipated.

[1]  P. Jones,et al.  Updated high‐resolution grids of monthly climatic observations – the CRU TS3.10 Dataset , 2014 .

[2]  Hans Peter Schmid,et al.  Increase in forest water-use efficiency as atmospheric carbon dioxide concentrations rise , 2013, Nature.

[3]  Markus Reichstein,et al.  Earlier springs decrease peak summer productivity in North American boreal forests , 2013 .

[4]  Ranga B. Myneni,et al.  Temperature and vegetation seasonality diminishment over northern lands , 2013 .

[5]  Guirui Yu,et al.  Regional drought-induced reduction in the biomass carbon sink of Canada's boreal forests , 2012, Proceedings of the National Academy of Sciences.

[6]  E. Vaganov,et al.  System analysis of weather fire danger in predicting large fires in Siberian forests , 2011 .

[7]  M. Pisaric,et al.  Temperature‐growth divergence in white spruce forests of Old Crow Flats, Yukon Territory, and adjacent regions of northwestern North America , 2011 .

[8]  Tim R. McVicar,et al.  Global evaluation of four AVHRR-NDVI data sets: Intercomparison and assessment against Landsat imagery , 2011 .

[9]  P. Ciais,et al.  Changes in satellite‐derived vegetation growth trend in temperate and boreal Eurasia from 1982 to 2006 , 2011 .

[10]  R. B. Jackson,et al.  A Large and Persistent Carbon Sink in the World’s Forests , 2011, Science.

[11]  S. Goetz,et al.  High-latitude tree growth and satellite vegetation indices: Correlations and trends in Russia and Canada (1982–2008) , 2011 .

[12]  Claire Alix,et al.  Changes in forest productivity across Alaska consistent with biome shift. , 2011, Ecology letters.

[13]  Guoqing Sun,et al.  Hierarchical mapping of Northern Eurasian land cover using MODIS data , 2011 .

[14]  D. McCarroll,et al.  Evidence of changing intrinsic water‐use efficiency under rising atmospheric CO2 concentrations in Boreal Fennoscandia from subfossil leaves and tree ring δ13C ratios , 2011 .

[15]  N. McDowell,et al.  Mechanisms Linking Drought, Hydraulics, Carbon Metabolism, and Vegetation Mortality1[W] , 2011, Plant Physiology.

[16]  P. Ciais,et al.  Spring temperature change and its implication in the change of vegetation growth in North America from 1982 to 2006 , 2011, Proceedings of the National Academy of Sciences.

[17]  G. Gutman,et al.  Eurasian Arctic land cover and land use in a changing climate , 2011 .

[18]  Nathan G. McDowell,et al.  Update on Mechanisms of Vegetation Mortality Mechanisms Linking Drought , Hydraulics , Carbon Metabolism , and Vegetation Mortality 1 [ W ] , 2011 .

[19]  S. Vicente‐Serrano,et al.  A Multiscalar Drought Index Sensitive to Global Warming: The Standardized Precipitation Evapotranspiration Index , 2009 .

[20]  Matthias Saurer,et al.  Spatial patterns of climatic changes in the Eurasian north reflected in Siberian larch tree‐ring parameters and stable isotopes , 2010 .

[21]  Sergio M. Vicente-Serrano,et al.  A multi-scalar drought index sensitive to global warming: The Standardized Precipitation Evapotranspiration Index - SPEI , 2009 .

[22]  I. C. Prentice,et al.  Evaluation of the terrestrial carbon cycle, future plant geography and climate‐carbon cycle feedbacks using five Dynamic Global Vegetation Models (DGVMs) , 2008 .

[23]  W. Kurz,et al.  Mountain pine beetle and forest carbon feedback to climate change , 2008, Nature.

[24]  Wolfgang Lucht,et al.  Tipping elements in the Earth's climate system , 2008, Proceedings of the National Academy of Sciences.

[25]  Paolo Cherubini,et al.  On the 'Divergence Problem' in Northern Forests: A review of the tree-ring evidence and possible causes , 2008 .

[26]  S. Itch,et al.  Evaluation of the terrestrial carbon cycle, future plant geography and climate-carbon cycle feedbacks using five Dynamic Global Vegetation Models (DGVMs) , 2008 .

[27]  Andrew G. Bunn,et al.  Responses of the circumpolar boreal forest to 20th century climate variability , 2007 .

[28]  H. L. Miller,et al.  Climate Change 2007: The Physical Science Basis , 2007 .

[29]  F. Achard,et al.  Areas of rapid forest-cover change in boreal Eurasia , 2006 .

[30]  E. Kasischke,et al.  Recent changes in the fire regime across the North American boreal region—Spatial and temporal patterns of burning across Canada and Alaska , 2006 .

[31]  Edwin W. Pak,et al.  An extended AVHRR 8‐km NDVI dataset compatible with MODIS and SPOT vegetation NDVI data , 2005 .

[32]  S. Goetz,et al.  Satellite-observed photosynthetic trends across boreal North America associated with climate and fire disturbance. , 2005, Proceedings of the National Academy of Sciences of the United States of America.

[33]  Harold S. J. Zald,et al.  Recent climate warming forces contrasting growth responses of white spruce at treeline in Alaska through temperature thresholds , 2004 .

[34]  T. Sharkey,et al.  Diffusive and metabolic limitations to photosynthesis under drought and salinity in C(3) plants. , 2004, Plant biology.

[35]  J. S. Waterhousea,et al.  Northern European Trees show a progressively diminishing response to increasing atmospheric carbon dioxide concentrations , 2004 .

[36]  J. Townshend,et al.  Global Percent Tree Cover at a Spatial Resolution of 500 Meters: First Results of the MODIS Vegetation Continuous Fields Algorithm , 2003 .

[37]  C. Tucker,et al.  Climate-Driven Increases in Global Terrestrial Net Primary Production from 1982 to 1999 , 2003, Science.

[38]  A. Arneth,et al.  Seasonal and annual variations in the photosynthetic productivity and carbon balance of a central Siberian pine forest , 2002 .

[39]  H. Linderholm,et al.  Peatland pines as climate indicators? A regional comparison of the climatic influence on Scots pine growth in Sweden , 2002 .

[40]  C. Tucker,et al.  Variations in northern vegetation activity inferred from satellite data of vegetation index during 1981 to 1999 , 2001 .

[41]  Edward B. Rastetter,et al.  Arctic and boreal ecosystems of western North America as components of the climate system , 2000, Global change biology.

[42]  Bruce P. Finney,et al.  Reduced growth of Alaskan white spruce in the twentieth century from temperature-induced drought stress , 2000, Nature.

[43]  C. Tucker,et al.  Increased plant growth in the northern high latitudes from 1981 to 1991 , 1997, Nature.

[44]  Permalink,et al.  Arctic and boreal ecosystems of western North America as components of the climate system , 2000, Global change biology.

[45]  Seongryong Kim,et al.  American Geophysical Union. All Rights Reserved. Evidence of Volatile-Induced Melting , 2022 .