Global land-use allocation model linked to an integrated assessment model

Hasegawa, T., Fujimori, S. ORCID: https://orcid.org/0000-0001-7897-1796, Ito, A., Takahashi, K., & Masui, T. (2017). Global land-use allocation model linked to an integrated assessment model. Science of the Total Environment 580 787-796. 10.1016/j.scitotenv.2016.12.025.

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Abstract

We developed a global land-use allocation model that can be linked to integrated assessment models (IAMs) with a coarser spatial resolution. Using the model, we performed a downscaling of the IAMs' regional aggregated land-use projections to obtain a spatial land-use distribution, which could subsequently be used by Earth system models for global environmental assessments of ecosystem services, food security, and climate policies. Here we describe the land-use allocation model, discuss the verification of the downscaling technique, and explain the influences of the downscaling on estimates of land-use carbon emissions. A comparison of the emissions estimated with and without downscaling suggested that the land-use downscaling would help capture the spatial distribution of carbon stock density and regional heterogeneity of carbon emissions caused by cropland and pasture land expansion.

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