Land-use allocation/Data uncertainties limitations: Difference between revisions

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{{ComponentDataUncertaintyAndLimitationsTemplate
{{ComponentDataUncertaintyAndLimitationsTemplate
|Reference=Alexandratos and Bruinsma, 2012; Siebert et al., 2005; UNEP, 2011; IUCN, 2009; Hurtt et el., 2011; Nelson, 2008; Hansen et al., 2013;
|Reference=Alexandratos and Bruinsma, 2012; Siebert et al., 2005; UNEP, 2011; Hurtt et al., 2011; Nelson, 2008; Hansen et al., 2013;
|Description=<h2>Data, uncertainties and limitations</h2>
|Description=<h2>Data, uncertainties and limitations</h2>
===Data===
===Data===
As the starting point for the simulation in 1970, [[HYDE database|HYDE]] land use data were aggregated to dominant land use types on a 5 minute grid scale. For the period 1970–2005, the model can either allocate land use based the dynamic behaviour described above, or be constrained by the HYDE land use map in 2005. The latter option is used mainly when specific impact models require a close match between IMAGE land-use patterns and observations in 2005 ([[Hurtt et al., 2011]]). Other data sources include maps of protected areas ([[IUCN, 2009]]; [[UNEP, 2011]]), accessibility ([[Nelson, 2008]]), and irrigated areas ([[Siebert et al., 2005]]), all aggregated to the IMAGE 5 minute grid. The trend for future irrigated areas is often based on FAO projections ([[Alexandratos and Bruinsma, 2012]]).
As the starting point for the simulation in 1970, [[HYDE database|HYDE]] land use data were aggregated to dominant land use types on a 5 minute grid scale. For the period 1970–2005, the model can either allocate land use based the dynamic behaviour described above, or be constrained by the HYDE land use map in 2005. The latter option is used mainly when specific impact models require a close match between IMAGE land-use patterns and observations in 2005 ([[Hurtt et al., 2011]]). Other data sources include maps of protected areas ([[UNEP, 2011]]), accessibility ([[Nelson, 2008]]), and irrigated areas ([[Siebert et al., 2005]]), all aggregated to the IMAGE 5 minute grid. The trend for future irrigated areas is often based on FAO projections ([[Alexandratos and Bruinsma, 2012]]).


===Uncertainties===
===Uncertainties===

Revision as of 13:48, 1 July 2014

link to framework components overview

Parts of Land-use allocation/Data uncertainties limitations

  1. Introduction page
  2. Model description
  3. Policy issues
  4. Data, uncertainty and limitations
  5. Overview of references
Component is implemented in:
Components:
Related IMAGE components
Projects/Applications
Key publications
References
Land-use allocation model in IMAGE 3.0
Flowchart Land-use allocation. See also the Input/Output Table on the introduction page.
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