Climate-related changes in peatland carbon accumulation during the last millennium
Por:
Charman D.J., Beilman D.W., Blaauw M., Booth R.K., Brewer S., Chambers F.M., Christen J.A., Gallego-Sala A., Harrison S.P., Hughes, PDM, Jackson S.T., Korhola A., Mauquoy D., Mitchell, FJG, Prentice I.C., Van Der Linden M., De Vleeschouwer F., Yu Z.C., Alm J., Bauer I.E., Corish, YMC, Garneau M., Hohl V., Huang Y., Karofeld E., Le Roux G., Loisel J., Moschen R., Nichols J.E., Nieminen T.M., MacDonald G.M., Phadtare N.R., Rausch N., Sillasoo U., Swindles G.T., Tuittila, ES, Ukonmaanaho L., Valiranta, M, Van Bellen S., Van Geel B., Vitt D.H., Zhao Y.
Publicada:
1 ene 2013
Resumen:
Peatlands are a major terrestrial carbon store and a persistent natural carbon sink during the Holocene, but there is considerable uncertainty over the fate of peatland carbon in a changing climate. It is generally assumed that higher temperatures will increase peat decay, causing a positive feedback to climate warming and contributing to the global positive carbon cycle feedback. Here we use a new extensive database of peat profiles across northern high latitudes to examine spatial and temporal patterns of carbon accumulation over the past millennium. Opposite to expectations, our results indicate a small negative carbon cycle feedback from past changes in the long-term accumulation rates of northern peatlands. Total carbon accumulated over the last 1000 yr is linearly related to contemporary growing season length and photosynthetically active radiation, suggesting that variability in net primary productivity is more important than decomposition in determining long-term carbon accumul
Filiaciones:
Charman D.J.:
Department of Geography, College of Life and Environmental Sciences, University of Exeter, EX4 4RJ, United Kingdom
Beilman D.W.:
Department of Geography, University of Hawai'i Mnoa, Honolulu, HI 96822, United States
Blaauw M.:
School of Geography Archaeology and Palaeoecology, Queen's University Belfast, Belfast BT7 1NN, United Kingdom
Booth R.K.:
Department of Earth and Environmental Sciences, Lehigh University, Bethlehem, PA 18015, United States
Brewer S.:
Department of Geography, University of Utah, Salt Lake City, UT 84112, United States
Chambers F.M.:
Centre for Environmental Change and Quaternary Research, SNSS, University of Gloucestershire, Cheltenham, GL50 4AZ, United Kingdom
Christen J.A.:
Centro de Investigación en Matemáticas, A.P. 402, 36000 Guanajuato, Gto., Mexico
Gallego-Sala A.:
QUEST, Department of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, United Kingdom
School of Geographical Sciences, University of Bristol, Bristol, BS8 1SS, United Kingdom
Department of Earth and Ecosystem Sciences, Lund Universitet, Sölvegatan 12, 223 62 Lund, Sweden
Harrison S.P.:
School of Geographical Sciences, University of Bristol, Bristol, BS8 1SS, United Kingdom
Department of Biological Sciences, Macquarie University, North Ryde, NSW 2109, Australia
Jackson S.T.:
Department of Botany, University of Wyoming, Laramie, WY 82071, United States
Korhola A.:
Department of Environmental Sciences, University of Helsinki, P.O. Box 65, 00014 Helsinki, Finland
Mauquoy D.:
School of Geosciences, University of Aberdeen, Elphinstone Road, Aberdeen AB24 3UF, United Kingdom
Prentice I.C.:
Department of Biological Sciences, Macquarie University, North Ryde, NSW 2109, Australia
Grantham Institute for Climate Change, Department of Life Sciences, Imperial College, Silwood Park, Ascot, SL5 7PY, United Kingdom
Van Der Linden M.:
BIAX Consult, Hogendijk 134, 1506 AL Zaandam, Netherlands
De Vleeschouwer F.:
CNRS and Université de Toulouse, INP, ENSAT, Avenue de l'Agrobiopole, 31326 Castanet-Tolosan, France
Yu Z.C.:
Department of Earth and Environmental Sciences, Lehigh University, Bethlehem, PA 18015, United States
Alm J.:
School of Forest Sciences, University of Eastern Finland, P.O. Box 68, 80101 Joensuu, Finland
Bauer I.E.:
Sir Wilfred Grenfell College, Memorial University of Newfoundland, Corner Brook, NL A2H 6P9, Canada
Garneau M.:
Département de Géographie and GEOTOP, Université du Québec À Montréal, Montréal, QC, H3C 3P8, Canada
Hohl V.:
Department of Geography, College of Life and Environmental Sciences, University of Exeter, EX4 4RJ, United Kingdom
Huang Y.:
Department of Geological Sciences, Brown University, Providence, RI 02912, United States
Karofeld E.:
University of Tartu, Institute of Ecology and Earth Sciences, Lai 40, Tartu 51005, Estonia
Le Roux G.:
CNRS and Université de Toulouse, INP, ENSAT, Avenue de l'Agrobiopole, 31326 Castanet-Tolosan, France
Loisel J.:
Department of Earth and Environmental Sciences, Lehigh University, Bethlehem, PA 18015, United States
Moschen R.:
Institute of Bio-and Geosciences 3: Agrosphere, Research Centre Juelich (Forschungszentrum Jülich), Jülich 52428, Germany
Nichols J.E.:
NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, United States
Lamont-Doherty Earth Observatory at Columbia University, Palisades, NY 10964, United States
Nieminen T.M.:
Finnish Forest Research Institute, P.O. Box 18, 01301 Vantaa, Finland
MacDonald G.M.:
Institute of the Environment and Sustainability, Department of Geography, UCLA, Los Angeles, CA 90095, United States
Phadtare N.R.:
Wadia Institute of Himalayan Geology, Dehra Dun, India
Rausch N.:
Institute of Environmental Geochemistry, University of Heidelberg, Im Neuenheimer Feld 236, 69120 Heidelberg, Germany
Sillasoo U.:
Institute of Ecology, Tallinn University, Uus-Sadama 5, Tallinn 10120, Estonia
Swindles G.T.:
School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
Ukonmaanaho L.:
Lamont-Doherty Earth Observatory at Columbia University, Palisades, NY 10964, United States
Van Bellen S.:
School of Geosciences, University of Aberdeen, Elphinstone Road, Aberdeen AB24 3UF, United Kingdom
Van Geel B.:
Institute for Biodiversity and Ecosystem Dynamics, P.O. Box 94248, 1090 GE Amsterdam, Netherlands
Vitt D.H.:
Department of Plant Biology, Southern Illinois University, Carbondale, IL 62901, United States
Zhao Y.:
Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Geography and Environment, University of Southampton, Highfield, Southampton, Hants, SO17 1BJ, United Kingdom
Botany Department, Trinity College Dublin, Dublin 2, Ireland
Gold
|