How to model of direct land use change (DLUC) in LCA? Land use changes may be a significant contributor to GHG-emissions and as the timing of emissions are changed by different market demands the LCA practitioner needs to take this into account. Our DLUC Club provides all the data and models required.
2.-0 LCA consultants have started an initiative to develop and refine a model for direct land use change (DLUC). This initiative is open to everyone. By subscribing you become a partner and have access to a various tools including methodology and data to be used in the modeling, and contribute to the further refinement.
More about DLUC
Different crop cultivation and forestry practises affect the amount of residues left for decay and potentially also the decay rate. When plant material decays, the carbon is converted to CO2. The input of residues to the soil and the decay function determines the level of soil carbon. The decay is a function of several parameters such as plant material, temperature, moisture etc. In the very long term, soil carbon and biomass carbon fluxes are normally in balance (uptake = decay) – except when systems accumulate carbon, e.g. peat soils. However, the relevance of climate change should not always be assessed with an indefinite time horizon. Applying other time horizons may give higher importance to emissions now and reduced importance to emissions and uptake in the future. This can be modelled using the IPCC global warming potential (GWP). The challenges for LCA practitioners in life cycle inventory are to:
- identify the amount of residues
- establish carbon balances
- identify the relevant decay functions and the needed input parameters
- relate the effects to e.g. 1 kg crop or 1 kg wood harvested in forest
- calculate the GWP using different time horizons
The DLUC Club provides all the data and models required for solving the above mentioned challenges for the LCA practitioner. The data and models are provided as transparent, easy accessible and all-purpose applicable. The DLUC Club is complementary to the ILUC club.
A membership of the club gives access to:
- the DLUCcarbon report describing the methodology and data to be used in the modelling
- any future updates of the report
- contribute to the DLUCcarbon project