Рубрики:
CLIMATE-CHANGE
STOMATAL CONDUCTANCE
SIBERIAN PERMAFROST
ARCTIC
Кл.слова (ненормированные):
Central Siberia -- Permafrost -- Thermo-hydrological regime of soils -- Tree-ring width -- Quantitative wood anatomy -- Stable C and O isotopes
CLIMATE-CHANGE
STOMATAL CONDUCTANCE
SIBERIAN PERMAFROST
ARCTIC
Кл.слова (ненормированные):
Central Siberia -- Permafrost -- Thermo-hydrological regime of soils -- Tree-ring width -- Quantitative wood anatomy -- Stable C and O isotopes
Аннотация: Global warming is most pronounced in high-latitude regions by altering habitat conditions and affecting permafrost degradation, which may significantly influence tree productivity and vegetation changes. In this study, by applying a "space-for-time" approach, we selected three plots of Larix gmelinii forest from a continuous permafrost zone in Siberia with different thermo-hydrological soil regimes and ground cover vegetation with the objective of assessing how tree growth and productivity will change under different stages of permafrost degradation. A tree-ring multi-proxy characterization of mature trees was used to identify shift in ecophysiological responses related to the modified plant-soil system. Variability of tree-ring width (1975-2009), stable isotope ratios (oxygen and carbon, 2000-2009) and xylem structural characteristics (2000-2009) under climatic conditions of particular years indicated that an increased depth of the soil active layer will initially lead to increase of tree productivity. However, due to an expected water use increase through transpiration, the system might progressively shift from a temperature to a moisture-limited environment. (C) 2015 Elsevier GmbH. All rights reserved.
WOS
Держатели документа:
RAS, VN Sukachev Inst Forest SB, Krasnoyarsk 660036, Russia.
WSL Swiss Fed Res Inst, CH-8903 Birmensdorf, Switzerland.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
ETH, Inst Terr Ecosyst, CH-8092 Zurich, Switzerland.
Доп.точки доступа:
Bryukhanova, Marina V.; Fonti, Patrick; Kirdyanov, Alexander V.; Siegwolf, Rolf T. W.; Saurer, Matthias; Pochebyt, Natalia P.; Churakova, O.V.; Prokushkin, Anatoly S.; Swiss National Science Foundation (Valorization Grant) [IZ76Z0_141967/1]; Joint Research Project SCOPES [IZ73Z0_128035/1]; Ministry of Education and Science of Russian Federation (RF for Young Scientists) [MK-5498.2012.4, MK-1589.2014.4]