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Global Agro-Ecological Zones (GAEZ v4) - Data Portal user’s guide










FAO and IIASA. 2020. Global Agro-Ecological Zones (GAEZ v4) – Data Portal user's guide. Rome.




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    Booklet
    Latest advancements on PyAEZ, an innovative free and open-source application for land evaluation. Making Agro-ecological Zoning analysis accessible through the GAEZ Data Portal
    Report of proceedings, 12 July 2023
    2023
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    The Agro-Ecological Zoning (AEZ) methodology, developed by FAO and IIASA, is a well-established modeling system used for sustainable land-use planning, agricultural investments, and assessing climate change impacts on agriculture. PyAEZ is and open-source Python package developed by FAO with the Asian Institute of Technology (AIT), and in collaboration with the International Institute for Applied Systems Analysis (IIASA), which offers AEZ calculations for user to implement for their own AEZ analyses. The latest version, PyAEZ v2.1, is now available on GitHub and through the Global Agro-Ecological Zoning Data Portal and it was presented during a virtual event on 12 July 2023 with the objective to support land use planning and enhance the utilization of land resources at different scales.
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    Booklet
    Consultation for the identification of global data for the new Global Agro Ecological Zoning database
    Report of proceedings
    2022
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    The Global Agro-Ecological Zoning version 4 (GAEZ v4), launched on June 17th 2021, uses well-established land evaluation principles to assess natural resources for finding suitable agricultural land utilization options. It is based on agro-climatic assessments, models, natural and human resources, crop statistics and water use at global scale. With the increasing complexity and intensity of environmental and social challenges an improved understanding of the physical drivers of climate change is necessary. Consequently, a systematic and harmonized update of the global datasets is intended for the further development of GAEZ. The main strategic goal of new version of GAEZ (version 5) is to make the outputs of the system available to national entities to support wise land use decision-making. To this end, supported by the GAEZ Partnership, GAEZ v5 will provide dynamically updated AEZ information, to meet local to global level AEZ users’ need. To refine the overall GAEZ assessment, additional layers will be included in the land resources and climate database. Appendix 1 “Recommendations for further GAEZ development”) of the GAEZ v4 Model Documentation1 provides a list of potential database updates and improvements including for climate (both base-line and climate projections), land cover/land use, soil (with improved detail of processes such as land degradation) and ancillary datasets used for reporting and planning (e.g. areas reserved for environmental protection and maintenance of biodiversity, population density, livestock, administrative boundaries) GAEZ makes use of best available global spatial databases to estimate the biophysical crop production potential for over 100 crops and crop sub-types. The estimation procedures consecutively consider factors relevant for crop production over time and for different management conditions. An overview of the overall GAEZ v4 model structure and data integration is shown in Figure 1 and detailed information about the process and methodology are provided in the Model Documentation.
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    Booklet
    Modernizing Global Agro-Ecological Zoning with new methods: Report of proceedings, 24 March 2022 2022
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    The Global Agro-Ecological Zoning version 4 (GAEZ v4), launched on 17 June 2021 uses well-established land evaluation principles to assess natural resources for finding suitable agricultural land utilization options. It is based on agro-climatic assessments, crop modelling, natural and human resources, crop statistics and water use at global scale. With the increasing complexity and intensity of environmental and social challenges an improved understanding of the biophysical determinants for agricultural management decisions including physical drivers of climate change is necessary. The main strategic goal of GAEZ v5 is to make the outputs of the system available to national entities to support wise land use decision-making. To this end, supported by a GAEZ Partnership, GAEZ v5 will provide dynamically updated AEZ information, to meet local to global level AEZ users’ needs. To refine the overall GAEZ assessment, there was an initial consultation on the data used for GAEZ v5 in December 2021. Additional recommendations for updates, refinements and extensions of approaches and modules are listed in the Appendix 1-1 (“Recommendations for further GAEZ development”) of the GAEZ v4 Model Documentation.

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