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Tree growth and forest ecosystem functioning in Eurasia under changing climate

English title Tree growth and forest ecosystem functioning in Eurasia under changing climate
Applicant Saurer Matthias
Number 128035
Funding scheme SCOPES
Research institution Labor für Atmosphärenchemie Paul Scherrer Institut
Institution of higher education Paul Scherrer Institute - PSI
Main discipline Climatology. Atmospherical Chemistry, Aeronomy
Start/End 01.11.2009 - 30.04.2013
Approved amount 180'000.00
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All Disciplines (2)

Discipline
Climatology. Atmospherical Chemistry, Aeronomy
Environmental Research

Keywords (6)

tree-rings; global change; Climate change; Eurasia; stable isotopes; permafrost

Lay Summary (English)

Lead
Lay summary
Global climate change will alter the species composition of forests with far reaching consequences for the biogeochemistry of the water, carbon and nitrogen cycles, the sustainability of economic development and even human health. The annual productivity of wood is substantial for the carbon sequestration and budget of the forests in Eurasia. Whereas a number of publications on the climatic influence on tree radial growth exist, little is known about the precise mechanisms of tree-ring formation, timing and rates of their growth, and about the influence of other exogenous factors such as forest fires, permafrost, or logging on biomass accumulation and carbon sequestration. An improved mechanistic understanding will be particularly important with respect to the prediction of future forest response.In the proposed project, we aim to study the influence of a changing climate on trees by analyzing the main factors controlling tree-ring growth in extreme conditions. We will focus our study on forest ecosystems in regions which are very sensitive to climatic changes and where rapid and dramatic environmental and climatic changes can take place:1) The high latitude permafrost region in Central Siberia (Russia)2) The semi-arid dry areas in Central Asia (Uzbekistan)3) The high altitude temperature-sensitive region of the Swiss Alps (Lötschental, Switzerland).The conifer trees growing in these regions could be seriously damaged due to expected future changes in temperature, CO2 and water availability. The thawing of permafrost and increasing drought situation could be key factors influencing forest growth and possible forest decline. Tree ring samples from the above mentioned regions will be considered to analyze the climatic response according to the following approaches: Intra-seasonal dynamics of tree-ring formation will be recorded and correlated with monitored environmental factors, like air and soil temperature and humidity, permafrost depth and the isotope composition of soil water, precipitation, river and stream water. A broad network of dendrochronological data from different research stations will be developed for each region to cover various local conditions. Special attention will be paid to the carbon/water relations of trees by determination of stable isotope ratios of different ecosystem compartments and tree rings. Project partners are Paul Scherrer Institut, Switzerland (PSI), Swiss Federal Research Institute WSL, Switzerland (WSL), V.N.Sukachev Institute of Forest, Krasnoyarsk, Russia (IF) and Samarkand State University, Uzbekistan (UZ).
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Publications

Publication
Temperature-Induced Responses of Xylem Structure of Larix sibirica Ldb. (Pinaceae) from Russian Altay
Fonti P., Bryukhanova M.V., Myglan V.S., Kirdyanov A.V., Naumova O.P., Vaganov E.A. (2013), Temperature-Induced Responses of Xylem Structure of Larix sibirica Ldb. (Pinaceae) from Russian Altay, in American Journal of Botany, 100(7), n.a..
Tree-ring growth of Gmelin larch under contrasting local conditions in the north of Central Siberia
Kirdyanov A.V., Prokushkin A.S., Tabakova M.A. (2013), Tree-ring growth of Gmelin larch under contrasting local conditions in the north of Central Siberia, in Dendrochronologia, 31, 114-119.
Forest ecosystems on permafrost: Feedbacks to climate warming
Forest ecosystems on permafrost: Feedbacks to climate warming, (2012), Forest ecosystems on permafrost: Feedbacks to climate warming, Abstract of the International Workshop on the Impact of climate change on forests and agricultural e, Krasnoyarsk, Russia.
Climate change and tree physiological response of Siberian larch forests - Investigations with stable carbon and oxygen isotopes
Climate change and tree physiological response of Siberian larch forests - Investigations with stable carbon and oxygen isotopes, (2012), Climate change and tree physiological response of Siberian larch forests - Investigations with stable carbon and oxygen isotopes, Abstracts of the DENDROSYMPOSIUM 2012 “TRACE: Tree Rings in Archaeology, Climatology and Ecology”, Potsdam, Germany.
From carbohydrate assimilation to tree ring formation - a carbon isotope based study in the Loetschental/Swiss Alps
From carbohydrate assimilation to tree ring formation - a carbon isotope based study in the Loetschental/Swiss Alps, (2011), From carbohydrate assimilation to tree ring formation - a carbon isotope based study in the Loetschental/Swiss Alps, Abstracts of the International Conference EuroDendro 2011, Engelberg.
The effect of local conditions on tree-ring growth dynamics and stem productivity in the north of Siberia, Russia
The effect of local conditions on tree-ring growth dynamics and stem productivity in the north of Siberia, Russia, (2011), The effect of local conditions on tree-ring growth dynamics and stem productivity in the north of Siberia, Russia, Abstracts of the International Conference EuroDendro, Engelberg.
A multi-proxy approach for revealing recent climatic changes in the Russian Altai
Sidorova Olga V., Saurer Matthias, Myglan Vladimir S., Eichler Anja, Schwikowski Margit, Kirdyanov Aleksander V., Bryukhanova Marina V., Gerasimova Oksana V., Kalugin Ivan A., Daryin Andrey V., Siegwolf Rolf T. W. (2011), A multi-proxy approach for revealing recent climatic changes in the Russian Altai, in Climate Dynamics, 38, 175-188.
Twentieth century trends in tree ring stable isotopes (
Knorre Anastasia A., Siegwolf Rolf T. W., Saurer Matthias, Sidorova Olga V., Vaganov Eugene A., Kirdyanov Alexander V. (2010), Twentieth century trends in tree ring stable isotopes (, in Journal of Geophysical Research-Biogeosciences, 115, n.a..
Seasonal growth of tree-rings in larch (Larix sibirica Ldb.) on permafrost soils in Siberia
Bryukhanova M., Kirdyanov A., Prokushkin A. (2010), Seasonal growth of tree-rings in larch (Larix sibirica Ldb.) on permafrost soils in Siberia, Abstracts of the 8th International Conference on Dendrochronology, Rovaniemi, Finland.
Dendroecological Studies in Permafrost Regions in Central Siberia, Russia
Dendroecological Studies in Permafrost Regions in Central Siberia, Russia, (2010), Dendroecological Studies in Permafrost Regions in Central Siberia, Russia, Abstracts of the Annual Conference of the ATRR “Tree Rings in Archaeology, Climatology and Ecology”, Freiburg.
Specific futures of larch (Larix gmelinii (Rupr.) Rupr.) tree-ring seasonal growth on permafrost soils in Evenkia
Bryukhanova M.V., Kirdyanov. A.V, Prokushkin A.S., Silkin P.P., Specific futures of larch (Larix gmelinii (Rupr.) Rupr.) tree-ring seasonal growth on permafrost soils in Evenkia, in Russian Journal of Ecology, 5, n.a..

Collaboration

Group / person Country
Types of collaboration
University of Bern, Prof. Markus Leuenberger Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Helmholtz-Centre for Environmental Research, Leipzig, Dr. Tatjana Böttger Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
University of Wales, Prof. Danny McCarroll Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
International Symposium on Wood Structure in Plant Biology and Ecology (WSE) 17.04.2013 Napoli, Itali
European Geosciences Union General Assembly 07.04.2013 Wien, Austria
Annual Conference “Tree Rings in Archaeology, Climatology and Ecology" 2012 09.05.2012 Potsdam, Germany
International Dendrochronological Conference Eurodendro2011 19.10.2011 Engelberg
Russian Dendrochronological Conference RusDendro2011 04.10.2011 Ekaterinburg, Russia
XVIII INQUA Congress 21.07.2011 Bern
8th International Conference on Dendrochronology 13.06.2010 Rovaniemi, Finland
Annual Conference “Tree Rings in Archaeology, Climatology and Ecology” 2010 23.04.2010 Freiburg, Germany


Self-organised

Title Date Place
International Workshop on the Impact of climate change on forests and agricultural ecosystems and adaptation strategies 20.09.2012 Krasnoyarsk, Russia

Associated projects

Number Title Start Funding scheme
150003 Compound-specific oxygen isotope analysis of carbohydrates as a novel tool in ecophysiology and climate research 01.08.2014 Project funding (Div. I-III)
111134 Climatic changes, tree-ring growth and C- and O-isotope variations along longitudinal transects in Siberia and in the Urals 01.11.2005 SCOPES
121838 Climate change and tree physiological response in Siberia and in the Alps during warm and cold periods of the last 1500 years 01.02.2009 Project funding (Div. I-III)
134864 Understanding the isotope signal of trees growing on continuous permafrost in northern Siberia 01.08.2011 Project funding (Div. I-III)

Abstract

Global climate change will alter the species composition of forests with far reaching conse-quences for the biogeochemistry of the water, carbon and nitrogen cycles, the sustainability of economic development and even human health. The annual productivity of wood is substantial for the carbon sequestration and budget of the forests in Eurasia. Whereas a number of publications on the climatic influence on tree radial growth exist, little is known about the precise mechanisms of tree-ring formation, timing and rates of their growth, and about the influence of other exogenous factors such as forest fires, permafrost, or logging on biomass accumulation and carbon sequestration. An improved mechanistic understanding will be particularly important with respect to the prediction of future forest response.In the proposed project, we aim to study the influence of a changing climate on trees by analyzing the main factors controlling tree-ring growth in extreme conditions. We will focus our study on forest ecosystems in regions which are very sensitive to climatic changes and where rapid and dramatic environmental and climatic changes can take place:1)The high latitude permafrost region in Central Siberia (Tura, Russia)2)The semi-arid dry areas in Central Asia (Bakhmal and Amankutan, Uzbekistan)3)The high altitude temperature-sensitive region of the Swiss Alps (Lötschental, Switzerland).The conifer trees growing in these regions could be seriously damaged due to expected future changes in temperature, CO2 and water availability. The thawing of permafrost and increasing drought situation could be key factors influencing forest growth and possible forest decline. Tree ring samples from the above mentioned regions will be considered to analyze the climatic response according to the following approaches: Intra-seasonal dynamics of tree-ring formation will be recorded and correlated with monitored environmental factors, like air and soil temperature and humidity, permafrost depth and the isotope composition of soil water, precipitation, river and stream water. Values of intra-annual and long-term variability of the main tree-ring parameters obtained for different regions (Central Siberia, Central Asia, Swiss Alps) and different local conditions (for example, different depth of active soil layer in permafrost region and the Alps) will be related to monthly data of the climatic factors. The following tree-ring parameters will be used: ring-width, density, cell number and structure and the ratio for C and O isotopes. A broad network of dendrochronological data from different research stations will be developed for each region to cover various local conditions. Special attention will be paid to the carbon/water relations of trees by determination of stable isotope ratios of different ecosystem compartments and tree rings. The measured climatic courses during the vegetation period in combination with the tree-ring parameters will be used for calibration and verification of an existing simulation model of tree radial growth and prognosis of wood production in various environments under changing climate conditions.Project partners with extensive experience in the proposed research fields are Paul Scherrer Institut, Switzerland (PSI), Swiss Federal Research Institute WSL, Switzerland (WSL), V.N.Sukachev Institute of Forest, Krasnoyarsk, Russia (IF) and Samarkand State University, Uzbekistan (UZ).
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