Description: Das Projekt "Tree growth and forest ecosystem functioning in Eurasia under changing climate" wird vom Umweltbundesamt gefördert und von Paul Scherrer Institut durchgeführt. 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).
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Jahresring ? Tierhaltungsanlage ? Nadelgehölz ? Waldbrand ? Waldschaden ? Fluss ? Biogeochemie ? Sibirien ? Geografische Koordinaten ? Baum ? Holzeinschlag ? Flusswasser ? Kohlenstoff ? Datenverbund ? Main ? Russland ? Schweiz ? Usbekistan ? Topographie ? Dürre ? Prognose ? Bodentemperatur ? Waldökosystem ? Bodenwasser ? Wirkung ? Kohlendioxid ? Kerngebiet ? Globale Erwärmung ? Regenwasser ? Kohlenstoffsenke ? Gelöster organischer Kohlenstoff ? Temperatur ? Wasserverfügbarkeit ? Mensch ? Wasserknappheit ? Isotop ? Kontrollmaßnahme ? Stickstoffkreislauf ? Studie ? Wirtschaftsentwicklung ? Trockengebiet ? Wasser ? Menschliche Gesundheit ? Globale Veränderung ? Alpen ? Asien ? Artenzusammensetzung ? Bewässerung ? Eurasien ? Bodenqualität ? Bodenluft ? Bildung ? CCS-Technologie ? Permafrost ? Wald ? Klima ? Feuchtigkeit ? Klimawandel ? Gebiet ? Staat ? Forschung ? Nachhaltigkeit ? Niederschlag ? Ökologischer Faktor ? Abdeckung ? Anreicherung ? Ökosystem ? Produktivität ? Biomasse ? Standortbedingung ? Forschungseinrichtung ? Gesundheit ? Umwelt ? Feuerung ? UNTER ? BEZUG ? JAHRESZEITLICH ? VERFUEGBARKEIT ? VERHAELTNIS ? LAENDER ? Vermehrung ? WICHTIG ? MECHANISMEN ? AUFTAUEND ? Wachstum [biologisch] ? PRAEZIPITATION ? PROBE ? PROJEKT ? Pflanzenwachstum ? SONSTIG ? BESONDER ? CO2-Speicherung [CCS] ? Haltestelle ? ERFASSUNG ? FUNKTION ? Stall ? BESTEHEND ? BAEUME ? VERANTWORTUNG ? BUDGET ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2009-11-01 - 2012-10-31
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