Here we only highlight some main (simplified) results.
Do not hesitate to contact us if you are interested in knowing more.
Modelling of Pine production in France by the GO+ and CAT models on 9600 zones of 8*8km as a function of various scenarios.
The GO+ model (ecophysiology) is coupled to the CAT model (carbon assessment of wood uses).
The eco-physiological growth model GO+, was combined with the CAT tool from the CAPSIS simulation platform, and Aspen Plus® process models. Using an 8×8km grid, GO+ simulates the growth of a forest according to soil fertility and climate projections (temperature, rain levels, CO2 atmospheric concentration etc.).
All flows between atmosphere and biosphere are calculated, including photosynthesis, tree respiration, soil respiration, and dry matter accumulation in plant organs, soil, and harvestable parts. The resulting Net Annual Production of stemwood is then fed into the CAT tool, which distributes the biomass among different uses (self consumption, construction, furniture, paper, and energy) according to the mean diameter of the harvested trees. CAT also calculates the emissions due to this primary transformation.
Wood production models (GO+ and CAT) are combined with detailed process models (Aspen Plus®) for a complete life cycle inventory of the bioenergy chain: from the seed to the final energy.
The conversion of wood into energy is completed using Aspen Plus® models to determine the efficiencies and emissions of various process (combustion, gasification, etc.). Our detailed Aspen Plus® modelling approach allows studying the fate of nutrients or carbon along the bioenergy chains and also predicting the emissions of pollutants.
Environmental and economic assessment of forest to energy chains
Based on the detailed life cycle inventories, the environmental impacts of different bioenergy chains and processes (for instance different combustion technologies) are assessed. Different methods of Life Cycle Assessment are compared and we especially highlight the important effect of minor pollutants on the global warming potential. The costs of various bioenergy chains are determined and compared with fossil fuels or electricity solutions.
Workshop at CNRS on "Is wood energy a solution to mitigate climate change?"
12/02/2016, Paris, Headquarter of CNRS
Flyer of the workshop
Presentations (in french, available on the links):
- Bilan du projet FORêVER, Anthony Dufour (CNRS, Nancy).
- Bilan carbone du bois-énergie : du global au territorial, Valentin Bellassen (INRA, Dijon).
- Analyse du Cycle de Vie Territoriale : principes, limites et perspectives, Eléonore Loiseau, Philippe Roux (IRSTEA, Montpellier).
- Forêt, bois-énergie et modélisation économique: les résultats du Laboratoire d’Économie Forestière, Sylvain Caurla (LEF, Nancy).