1 Stocks of biomass / C Stocks of biomass / C soil organic matter soil organic matter Expert meeting on land use and Ecosystem accounting 18./19.05.2006
Mar 27, 2015
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Stocks of biomass / CStocks of biomass / Csoil organic mattersoil organic matter
Expert meeting on land use and Ecosystem accounting 18./19.05.2006
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outlineoutline
• Why organic matter• The accounting perspective• What we have and what we need• The soil perspective
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Why organic matterWhy organic matter
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Why organic matterWhy organic matter
• Climate change debate• Soil as a sink or source• Biomass as an indication for carbon
sequestration• For environment relevant to reduce
greenhouse gases• For economic sector relevant for
emission trading
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The accounting perspectiveThe accounting perspective
• Stocks• Stock change• Flows• Ecosystem functions• Ecosystem goods and services• Assessment of human activities which
influence the provided goods and services
• Political process
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What we have and what we needWhat we have and what we need
• Soil map in scale 1:1mio• Representative profiles for the main
soil types of Europe• Properties (without time dimension)• Accounting for GHG reporting
• Stocks and stock changes• And …….
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The soil perspective / specificsThe soil perspective / specifics
• Soil influence many processes• As the ‘basic’ medium often defined as
contributor to other processes• Processes slower than in other media (e.g.
flow velocity) => long time memory• Soil science has a history from agriculture• Soil surveys in the past are not targeted
to actual questions (e.g. sampling)
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Soil ?Soil ? Legend unit
ST A 70%
ST B 20 %
ST C 10%
Horizon description
Organic matter content from 8-12%
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Soil ?Soil ?
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Soil ?Soil ?
Soil sampling protocol to certify the change of organic carbon stock in mineral soils, JRC 2005
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Soil, what we haveSoil, what we have
Carbon losses from all soils across England and Wales1978-2003Pat H. Bellamy, Peter Loveland et all. (nature, 2005)
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Soil, what we haveSoil, what we have
Carbon losses from all soils across England and Wales1978-2003Pat H. Bellamy, Peter Loveland et all. (nature, 2005)
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Soil, what we haveSoil, what we have
Europe’s terrestrial biosphere absorbs 7 -1 12 % of European anthropogenic CO2 emissionsJanssens, Ivan et al. 2003: science 2003
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Soil, what we haveSoil, what we have
Land use, land-use change, and forestryGreenhouse Gas Inventory, Germany - 2005
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Soil, what we needSoil, what we need
• Maps: soil type, soil properties, soil functions
• Observation of concrete profiles• Problems of re-sampling after time• Representativness of samples
• Potentials (e.g. erodability) vs. stocks (organic matter)
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Perspective / open pointsPerspective / open points
• Clear definition of subsystems (medium and processes)
• Link between ecosystem as individuals and European picture
• Criteria for back linking of case studies to European picture
• Additional to using what we have we need intensive dialogue what we need in advance of research project
• Do we account the same for ecosystems and land use?
• New model or another round with better input