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SOM control - Controls on soil organic matter in Swiss forest soils: The impact of forest productivity, land-use history, climate and physico-chemical stabilization

English title SOM control - Controls on soil organic matter in Swiss forest soils: The impact of forest productivity, land-use history, climate and physico-chemical stabilization
Applicant Hagedorn Frank
Number 143025
Funding scheme NRP 68 Sustainable Use of Soil as a Resource
Research institution Swiss Federal Research Inst. WSL Direktion
Institution of higher education Swiss Federal Institute for Forest, Snow and Landscape Research - WSL
Main discipline Pedology
Start/End 01.06.2013 - 31.12.2016
Approved amount 210'661.00
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All Disciplines (5)

Discipline
Pedology
Environmental Research
Social geography and ecology
Ecology
Agricultural and Forestry Sciences

Keywords (8)

land-use legacy; forest; modelling; carbon sink; soil organic matter; land-use change; forest management; Forest soils

Lay Summary (German)

Lead
Organische Bodensubstanz spielt eine Schlüsselrolle für viele Bodenfunktionen. Frank Hagedorn und sein Team untersuchen, inwiefern die klimatischen Verhältnisse, die historische Landnutzung, die Waldbewirtschaftung sowie die physikochemischen Bodeneigenschaften die Kohlenstoffvorräte in Schweizer Waldböden bestimmen.
Lay summary

Organische Bodensubstanz spielt eine Schlüsselrolle für viele Bodenfunktionen. In der Schweiz speichern Böden etwa siebenmal mehr Kohlenstoff als die Atmosphäre. Zudem enthält die organische Bodensubstanz wichtige Nährstoffe, sie hält Schadstoffe zurück und beeinflusst den Wasserhaushalt. Die komplexe Zusammensetzung der organischen Bodensubstanz hängt dabei von einer Vielzahl von Faktoren ab, deren relative Bedeutung jedoch unklar ist und in Bodenkohlenstoffmodellen ungenügend berücksichtigt wird.

Das Projekt untersucht, inwiefern die klimatischen Verhältnisse, die historische Landnutzung, die Waldbewirtschaftung sowie die physikochemischen Bodeneigenschaften die Kohlenstoffvorräte in Schweizer Waldböden bestimmen.

Als Grundlage für die Untersuchungen dient die Bodendatenbank der Eidg. Forschungsanstalt für Wald, Schnee und Landschaft mit Informationen von mehr als 1000 Bodenprofilen. Daten zur früheren Landnutzung liefern historische Karten, jene zu Waldeigenschaften und -nutzung das Schweizer Landesforstinventar. Detailuntersuchungen zur Umsetzung der organischen Bodensubstanz erfolgen zusammen mit den Forschungsteams von Timothy Eglinton (ETH Zürich) und Samuel Abiven (Universität Zürich).

Das Projekt trägt zu einem besseren Verständnis von Böden als Quellen und Senken des Treibhausgases Kohlenstoffdioxid bei, was eine genauere Modellierung des Kohlenstoffkreislaufs ermöglicht. Die Ergebnisse fliessen zudem in das Treibhausgasinventar ein, das die Schweiz aufgrund des internationalen Klimaabkommens führt.

 

Direct link to Lay Summary Last update: 31.05.2013

Lay Summary (French)

Lead
La matière organique du sol joue un rôle décisif dans les nombreuses fonctions du sol. Frank Hagedorn et son équipe examinent dans quelle mesure les conditions climatiques, l’utilisation passée des sols, la gestion forestière et les propriétés physico-chimiques des sols influencent les stocks de carbone dans les sols forestiers suisses. L’étude se fonde sur la banque de données pédologiques de l’Institut fédéral de recherches sur la forêt, la neige et le paysage (WSL).
Lay summary

 La matière organique du sol joue un rôle décisif dans les nombreuses fonctions du sol. Les sols suisses stockent environ sept fois plus de carbone que l’atmosphère. De plus, la matière organique s du sol renferment des éléments nutritifs importants, retiennent les polluants et influent le bilan hydrique. La composition complexe des substances organiques du sol dépend de nombreux facteurs, dont l’importance relative est toutefois mal connue et insuffisamment prise en compte dans les modèles du carbone des sols.

Le projet examine dans quelle mesure les conditions climatiques, l’utilisation passée des sols, la gestion forestière et les propriétés physico-chimiques des sols influencent les stocks de carbone contenus dans les sols forestiers suisses.

L’étude prend pour base la banque de données pédologiques du WSL, qui contient des informations sur plus de 1000 profils de sols. Les cartes historiques fournissent des données concernant l’utilisation passée des sols, tandis que l’inventaire forestier national suisse renseigne sur les propriétés et la gestion des forêts. L’étude détaillée de la transformation la matière organique du sol est conduite en collaboration avec les équipes de recherche de Timothy Eglinton (EPF Zurich) et de Samuel Abiven (Université de Zurich).

Le projet contribue à une meilleure compréhension des sols en tant que sources et puits de dioxyde de carbone, qui est un gaz à effet de serre, ce qui permet d’obtenir une modélisation plus précise du cycle du carbone. Les résultats sont ensuite ajoutés à l’Inventaire des émissions de gaz à effet dressé par la Suisse conformément à la Convention internationale sur le climat.

Direct link to Lay Summary Last update: 31.05.2013

Lay Summary (English)

Lead
Soil organic matter (SOM) plays a key role for many soil functions. Frank Hagedorn and his team are investigating to what extent climatic conditions, historical land use, forest management and physico-chemical soil properties determine carbon storage in Swiss forest soils. The soil database of the Swiss Federal Institute for Forest, Snow and Landscape (WSL) serves as the basis.
Lay summary

Soil organic matter (SOM) plays a key role for many soil functions. In Switzerland, soils store about seven times more carbon than the atmosphere. In additions, SOM contains important nutrients, retain pollutants and has a strong impact on the water regime. The complex composition of SOM depends on a number of factors, whose relative importance is not clear yet and has not sufficiently been considered in soil carbon models.

The project will investigate to what extent climatic conditions, historical land use, forest management and physico-chemical soil properties determine carbon storage in Swiss forest soils.

The database of the Swiss Federal Institute for Forest, Snow and Landscape with information from more than 1000 soil profiles will serve as the basis for the study. Former land use will be reconstructed using historical maps and management plans. Data on forest productivity and tree species composition will be taken from the national forest inventory. Detailed measurements on SOM cycling will be carried out in collaboration with the research team of Timothy Eglinton (ETH Zurich) and Samuel Abiven (University of Zurich).

The project is contributing to an improved understanding of soils as sources and sinks of the greenhouse gas carbon dioxide, enabling a more detailed modelling of the carbon cycle. The results are also incorporated into the greenhouse gas inventory of Switzerland as part of the international climate agreement.

Direct link to Lay Summary Last update: 31.05.2013

Responsible applicant and co-applicants

Employees

Collaboration

Group / person Country
Types of collaboration
Prof. Dr. Timothy Eglington/ETH Zürich Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
- Exchange of personnel
Dr. Markus Didion, Waldressourcen & Waldmgmt, Ressourcenanalyse, WSL Switzerland (Europe)
- Publication
Dr. Jens Leifeld /ART Reckenholz Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
PD Dr. Pascal Niklaus/University of Zürich Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. Samuel Abiven, University Zürich Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Exchange of personnel

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Science Club, WSL Internal Meeting Individual talk Understanding SOM dynamics in Swiss forest soils 09.02.2016 Birmensdorf, Switzerland Gosheva Siyka Georgieva;
Jahrestagung der Bodenkundlichen Gesellschaft der Schweiz (BGS) Talk given at a conference Vernachlässigbarer Effekt des Waldalters auf die C-Speicherung in Waldböden 05.02.2016 Genf, Switzerland Gosheva Siyka Georgieva; Gimmi Urs; Walthert Lorenz; Hagedorn Frank;
Jahrestagung der Bodenkundlichen Gesellschaft der Schweiz (BGS) Poster Soil Organic Matter along climatic and altitudinal gradients in Swiss forest soils 05.02.2016 Genf, Switzerland Gosheva Siyka Georgieva; Hagedorn Frank; Walthert Lorenz;
13th Swiss Geoscience Meeting Talk given at a conference SOM storage and pool distribution along climatic and altitudinal gradients in Swiss forest soils 20.11.2015 Basel, Switzerland Gosheva Siyka Georgieva; Hagedorn Frank; Walthert Lorenz;
5th International Symposium on SOM Talk given at a conference The impact of forest age, climate, and soil properties on soil carbon stocks in Swiss forests 21.09.2015 Göttingen, Germany Gimmi Urs; Hagedorn Frank; Walthert Lorenz; Gosheva Siyka Georgieva;
Jahrestagung der Deutschen Bodenkundlichen Gesellschaft Poster Swiss forest SOC storage – driven by climate or historical land-use? 07.09.2015 München, Germany Walthert Lorenz; Hagedorn Frank; Gimmi Urs; Gosheva Siyka Georgieva;
European Geosciences Union General Assembly 2015 Talk given at a conference SOC storage in Swiss forest soils – driven by climate or historical land-use? 13.04.2015 Wien, Austria Gimmi Urs; Gosheva Siyka Georgieva; Walthert Lorenz; Hagedorn Frank;
16th Swiss Global Change Day Poster Are SOC-stocks in Swiss forest soils controlled by historical land-use, climate or soil chemistry? (Poster award in Session Geosphere / Biosphere) 01.04.2015 Bern, Switzerland Gosheva Siyka Georgieva; Walthert Lorenz; Gimmi Urs; Hagedorn Frank;
12th Swiss Geoscience Meeting Talk given at a conference Are Swiss forest soil carbon stocks resilient to historical land-use? 22.11.2014 Fribourg, Switzerland Hagedorn Frank; Gosheva Siyka Georgieva;
BIOGEOMON Poster Land-use history has negligible effects on current carbon stocks in Swiss forest soils 14.07.2014 Bayreuth, Germany Hagedorn Frank; Gosheva Siyka Georgieva;
15th Swiss Global Change Day Poster Land-use history has negligible effects on carbon stocks in Swiss forests 02.04.2014 Bern, Switzerland Gosheva Siyka Georgieva;
WSL Internal meeting of the organisational unit Forest Soils and Biogeochemistry Individual talk SOM Control - controls on SOM in Swiss forest soils 27.03.2014 Birmensdorf, Switzerland Gosheva Siyka Georgieva;


Knowledge transfer events

Active participation

Title Type of contribution Date Place Persons involved
CCES Winter School "Science meets Practice" Workshop 11.01.2016 Wislikofen, Switzerland Gosheva Siyka Georgieva;
Project workshop on forest carbon, Agroscope Institute for Sustainability Sciences Talk 04.12.2015 Zürich, Switzerland Gosheva Siyka Georgieva;
Waldtag Winterthur, Wald und CO2 Performances, exhibitions (e.g. for education institutions) 23.05.2014 Winterthur, Switzerland Gosheva Siyka Georgieva; Hagedorn Frank;


Self-organised

Title Date Place

Communication with the public

Communication Title Media Place Year
Video/Film 10 Jahre Waldwissen.net German-speaking Switzerland 2015

Awards

Title Year
Poster award in Session Geosphere / Biosphere from the 16th Swiss Global Change Day 2015

Abstract

Soil organic matter (SOM) plays a key role for many soil functions such as carbon (C) storage, nutrient cycling, biodiversity, and pollutant retention. The overall aim of our project is to identify the controlling factors of SOM storage in Swiss forest soils. Although individual processes of SOM cycling have been identified experimentally, there is a large research gap in extrapolating the findings to a larger scale. Our approach is to assess SOM storage on a national scale is (1) to mine the WSL data bank including SOM contents as well as soil chemical and physical characteristics of more than 1000 forest soil profiles across Switzerland. (2) To estimate the impact of tree species and productivity by using data of the Swiss National Forest inventory (NFI). (3) In addition, we will collect historical information on the former land-use of the sites from historic maps and forest management plans. (4) We will link the data by using advanced statistical methods and by analyzing the residuals between measured soil C stocks and the soil C model YASSO driven by tree productivity and climate. Our project will improve the understanding and knowledge of SOM pools on a national level in Switzerland, which is needed for the greenhouse gas reporting. The project will also provide the basis for in-depth studies proposed within NRP 68 (umbrella project SwissSOM) and for establishing strategies to quantify the C sink in forest soils. The results will identify sensitive indicators for SOM changes. The project will also allow to estimate the impact of former land-use, and it will help to find management strategies to preserve SOM in forest soils.
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