Description: Das Projekt "Forschergruppe (FOR) 1806: The Forgotten Part of Carbon Cycling: Organic Matter Storage and Turnover in Subsoils (SUBSOM)" wird vom Umweltbundesamt gefördert und von Universität Bochum, Geographisches Institut, Arbeitsgruppe Bodenkunde und Bodenökologie durchgeführt. We are currently facing the urgent need to improve our understanding of carbon cycling in subsoils, because the organic carbon pool below 30 cm depth is considerably larger than that in the topsoil and a substantial part of the subsoil C pool appears to be much less recalcitrant than expected over the last decades. Therefore, small changes in environmental conditions could change not only carbon cycling in topsoils, but also in subsoils. While organic matter stabilization mechanisms and factors controlling its turnover are well understood in topsoils, the underlying mechanisms are not valid in subsoils due to depth dependent differences regarding (1) amounts and composition of C-pools and C-inputs, (2) aeration, moisture and temperature regimes, (3) relevance of specific soil organic carbon (SOC) stabilisation mechanisms and (4) spatial heterogeneity of physico-chemical and biological parameters. Due to very low C concentrations and high spatio-temporal variability of properties and processes, the investigation of subsoil phenomena and processes poses major methodological, instrumental and analytical challenges. This project will face these challenges with a transdisciplinary team of soil scientists applying innovative approaches and considering the magnitude, chemical and isotopic composition and 14C-content of all relevant C-flux components and C-fractions. Taking also the spatial and temporal variability into account, will allow us to understand the four-dimensional changes of C-cycling in this environment. The nine closely interlinked subprojects coordinated by the central project will combine field C-flux measurements with detailed analyses of subsoil properties and in-situ experiments at a central field site on a sandy soil near Hannover. The field measurements are supplemented by laboratory studies for the determination of factors controlling C stabilization and C turnover. Ultimately, the results generated by the subprojects and the data synthesized in the coordinating project will greatly enhance our knowledge and conceptual understanding of the processes and controlling factors of subsoil carbon turnover as a prerequisite for numerical modelling of C-dynamics in subsoils.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Bochum ? Hannover ? Biopharmazeutikum ? Messstation ? Organischer Kohlenstoff ? Bodenökologie ? Gartenbau ? Humus ? Kohlenstoff ? Skigebiet ? Brunnen ? Buchhaltung ? Bodenkunde ? Moorboden ? Sandboden ? Organisches Material ? Teich ? Temperatur ? Veterinärmedizin ? Agrarwissenschaften ? Oberboden ? Unterboden ? Gelöster organischer Kohlenstoff ? Ackerland ? Kohlenstoffkreislauf ? Kontrollmaßnahme ? Lüftung ? Studie ? Boden ? Modellierung ? Bodenwasserhaushalt ? Chemikalien ? Messung ? Daten ? Lagerung ? Fahrradfahren ? Standortbedingung ? Umwelt ? Umweltveränderung ? Bedarf ? Feuchtigkeit ? Forschungseinrichtung ? in situ ? Kenngröße ? ANALYTISCH ? ABHAENGIG ? MECHANISMEN ? PROJEKT ? SPEZIFISCH ? STABILISIERUNG ? TEIL ? UNTER ? UNTERSUCHUNG ? VERARBEITEN ? BESTANDTEIL ? BETRAG ? BEZUG ? Buchgrundstück ? ERFASSUNG ? ERGEBNIS ? EXPERIMENT ? FRAKTION ? Forstwissenschaften ? Konzentrat ? Koordinate ?
Region: Nordrhein-Westfalen
Bounding box: 6.76339° .. 6.76339° x 51.21895° .. 51.21895°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2013-01-01 - 2024-11-29
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