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Proposal for the creation of a sub-group on ecosystem accounting

This proposal suggests the creation of a sub-group focused on ecosystem accounting, with a specific emphasis on land and ecosystem accounts. The proposal highlights the various projects and studies conducted in the past related to this area and lists the key priorities, methodological issues, and potential actions that need to be addressed.

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Proposal for the creation of a sub-group on ecosystem accounting

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  1. Proposal for the creation of a sub-group on ecosystem accounting Jean-Louis Weber

  2. Land & ecosystem accounts • UNECE working group (1994-96) (FR, UK, DE, AT, PL)– presentation at IARIW, Tokyo • First Eurostat test of land cover accounts (1997-99) (FR, UK, DE) • SEEA 2003, ”LEAC” • Feasibility study EEA/ETCTE & Eurostat (2002-2003) 1975-1990 (CZ, SL, HU, RO, plus European coast) • Production in Europe from Corine land cover 1990-2000, EEA (2004-2005) 24 countries • Web dissemimation, detailed data 1km2 grid – 2006 LEAC.xls • SOER2005 & Report on land cover accounts with detailed methodology – EEA 2006 • Ecosystem accounts at the EEA, 2005, ongoing activity, International workshop EEA-UNSD, Copenhagen, 30 Nov.-1st Dec. 2006

  3. Sprawl of artificial areas

  4. Change in agriculture

  5. Production & Consumption Ecosystem services Atmosphere/ Climate Ecosystem potentials Water system Integrity, health & viability Vulnerability Natural Assets Population Flora & Fauna Soil Land based ecosystem accounting Land use economic & social functions Artificiality of land Infrastructures & Technologies Intensity of use ECOSYSTEM & LAND USE ACCOUNTS CORE LAND COVER ACCOUNT

  6. Counts of stocks diversity / integrity (by ecosystem types, focus on quality) Ecosystem State (health diagnosis and wealth calculation) Ecosystem Stocks & State Accounts Working Framework of Ecosystem Accounts Spatial integration Economic sectors Accounts of flows of ecosystem goods and services Basic accounts of stocks & flows (by ecosystem types, raw quantities) Material/energy flows (focus on biomass, water, nutrients, residuals) Functions & Services • Land use function • Natural function Supply & use of ecosystem goods and services (Use of resource by sectors, supply to consumption & residuals, accumulation, I-O analysis) Ecosystem types Natural assets accounts • Natural capital structure, resilience & wealth (physical units, by sectors) • Capital consumption & accumulation (physical units, €) • Ecosystem assets wealth (€) Natural Capital Accounts/ living & cycling natural capital Economic integration

  7. Basic accounts of stocks and flows by ecosystem types • Terrestrial ecosystems: • land cover (km², number of land units) • rivers (standard-river-km, number of reaches) • small features (number of units) • Marine ecosystem (km²) • Biomass (dry matter, C, energy…) • soil biomass • vegetation (non soil) • fauna • Water quantity (m3) • Nitrogen, Phosphorus (t) • Species

  8. Ecosystem health: counts of diversity/integrity • Ecosystem Distress Syndrome model: • Disruptions of nutrients cycling (loss or excess) • Degradation of substrates (fragmentation, water stress, chemical stress) • Change in species composition (invasive…) • Dependence of systems from artificial input (energy, water, subsidies …) • Specific diagnosis From selection of markers and threshold values according to habitat types, region, context • Homeostasis state (no alteration foreseen). • Resilience state (the disturbance that ecosystems are still able to absorb or compensate, keeping the same functions, identity and feedbacks(Walker, 2005). • Reversible process without compensation (degradation). • Irreversible change (death). • Focussed research of stressors • overharvesting, overuse • land/rivers restructuring • deposition of residuals • introduction of species • Physical wealth as stocks*coefficients (potential, resilience)

  9. Land use functions and ecosystem services • Support services  Basic accounts & MF&EA • Provisioning services: goods (food, fiber, wood, fuel…) and services that can be “consumed” in given quantities  Supply & use tables by sectors • Cultural services  Indirect measurement (beneficiaries) • Regulating services  collective, direct measurement maybe difficult, indirect measurement (beneficiaries, risk assessment/insurance, natural capital/potentials)  ecosystem services defined according to natural and land use functions

  10. Support expected from the London Group Priority areas • Physical & Hybrid flow accounts, M&EFA, PIOT • Asset accounts: Forest/Water/Fisheries; agro-ecosystems • Wealth assessment Methodological issues • Development of the working accouting framework of land & ecosystem accounts • Consistency with SEEA standards • Classifications • Land use functions and ecosystem services • Optimal levels of data assimilation and common requirements (scales, time series...) • Valuation Actions • e-Working sub-group • Session of the next London Group • ”Long term” research but urgent needs

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