The European Forest and Agricultural Sector Optimization Model (EUFASOM) Uwe A. Schneider
Research Unit Sustainabilty and Global Change
Hamburg University
The European Forest and Agricultural Sector Optimization Model (EUFASOM) Uwe A. Schneider
Research Unit Sustainabilty and Global Change
Hamburg University
FASOM History
US (1993)
EU (2004)
Global (2006)
FASOM
Partial Equilibrium Model
Maximizes sum of consumer and producer surplus
Constrained by resource endowments, technologies, policies
Spatially explicit, discrete dynamic
Integrates environmental effects
Programmed in GAMS
Purpose and Objectives
To advice policy makers about the agricultural and forestry sector response to structural changes
Policies
Environmental change
Technical change
Socioeconomic change
Policy Scope
Simultaneous assessment Climate and other environmental policies
Research subsidies
Agricultural policies
Trade policies
Food
Timber
Fiber Bioenergy
Biomaterial Carbon
Sinks Land use
competition Nature
Reserves Sealed
Land
Objective Function
Demand Supply Price Quantity P* Q* Resource
Rents Consumer
Surplus
Maximize sum from all markets
Surplus Maximization
Implicit Supply and Demand Forest Inventory Land Supply Water Supply Labor Supply Animal Supply National Inputs Import Supply Processing Demand Feed Demand Domestic Demand
Export Demand
CS PS
Commodity Demand
4 general cases (above)
For all final products
For all regions
Domestic Use, Export
Model Structure
Resources Land Use
Technologies Processing Technologies Products Markets Inputs Limits Supply
Functions Limits Demand
Functions,
Trade Limits Environmental
Impacts
Model Structure
Processing Markets Feed mixing Labor Pasture Other Inputs Cropland Water Livestock production Forestry,
Nature,
Crop production Export Domestic demand Import Forest Inventory
Spatial Resolution
Political regions
Ownership (forests)
Farm types
Farm size Many crop and tree species
Tillage, planting irrigation, fertilization harvest regime Soil texture
Stone content
Altitude levels
Slopes
Soil state
Altitude:
< 300 m
300-600 m
600-1100 m
>1100 m Texture:
Coarse
Medium
Medium-fine
Fine
Very fine Soil Depth:
shallow
medium
deep
Stoniness:
Low content
Medium content
High content Slope Class:
0-3%
3-6%
6-10%
10-15%
… Homogeneous Response Units DE13 DE12 DE11 DE14
EUFASOM Dynamics
5 (to 20) year time steps
State of forests (and soil organic matter)
Technical progress
Demand & industry growth
Resource and global change
Policy scenarios
State of the Art
Flexibility (resolve acc. needs)
Index notation
millions of data, variables, and equations with sparse programming statements
ensures consistency (model development)
Extensive generic equation checks (30 checks per equation)
Systematic solution analysis (symptom to cause)
Comments