Land cover and land use: Difference between revisions
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|ComponentCode=LCU | |ComponentCode=LCU | ||
|Application=Roads from Rio+20 (2012) project; | |Application=Roads from Rio+20 (2012) project; | ||
|KeyReference=Mandryk et al., | |KeyReference=Mandryk et al., 2015; | ||
|InputVar=Crop fraction in agricultural area - grid; Potential natural vegetation - grid; Built-up area; Bioenergy area; Extensive grassland area - grid; Potential natural vegetation - grid; Animal stock; Intensive grassland area; Management intensity crops; Management intensity livestock; Irrigation water withdrawal - grid; Water withdrawal other sectors - grid; Forest management type - grid; Change in soil properties - grid; Carbon pools in soil and timber - grid; Carbon pools in vegetation - grid; NPP (net primary production) - grid; MSA (mean species abundance) - grid; Regrowth forest area - grid; Agricultural area - grid; Protected area - grid; Degraded forest area; Harvested wood | |InputVar=Crop fraction in agricultural area - grid; Potential natural vegetation - grid; Built-up area - grid; Bioenergy area; Extensive grassland area - grid; Potential natural vegetation - grid; Animal stock; Intensive grassland area; Management intensity crops; Management intensity livestock; Irrigation water withdrawal - grid; Water withdrawal other sectors - grid; Forest management type - grid; Change in soil properties - grid; Carbon pools in soil and timber - grid; Carbon pools in vegetation - grid; NPP (net primary production) - grid; MSA (mean species abundance) - grid; Regrowth forest area - grid; Agricultural area - grid; Protected area - grid; Degraded forest area; Harvested wood; | ||
|OutputVar=Land cover, land use - grid; Land supply for bioenergy - grid; Land supply; | |OutputVar=Land cover, land use - grid; Land supply for bioenergy - grid; Land supply; | ||
|Description=<h2>Introduction</h2> | |Description=<h2>Introduction</h2> | ||
In addition to emissions, land | In addition to emissions, land cover and land use are key linkages between the Human system and the Earth system. Land cover and use are changed by humans for a variety of purposes, such as to produce food, fibres, timber and energy, to raise animals, for shelter and housing, transport infrastructure, tourism, and recreation. These human activities have affected most areas in the world, transforming natural areas to human-dominated landscapes, changing ecosystem structure and species distribution, and water, nutrient and carbon cycles. Natural landscape characteristics and land cover also affect humans, determining suitable areas for settlement and agriculture, and delivering a wide range of ecosystem services. As such, land cover and land use can be understood as the complex description of the state and processes in a land system in a certain location. It results from the interplay of natural and human processes, such as crop cultivation, fertilizer input, livestock density, type of natural vegetation, forest management history, and built-up areas. | ||
In IMAGE, elements of land cover and land use are calculated in several components, namely in land use allocation, forest management, livestock systems, carbon cycle and natural vegetation. The output from these components forms a description of gridded global land cover and land use that is used in these and other components of IMAGE. In addition, this description of gridded land cover and land use per time step can be provided as IMAGE scenario information to partners and other models for their specific assessments. | In IMAGE, elements of land cover and land use are calculated in several components, namely in land use allocation, forest management, livestock systems, carbon cycle and natural vegetation. The output from these components forms a description of gridded global land cover and land use that is used in these and other components of IMAGE. In addition, this description of gridded land cover and land use per time step can be provided as IMAGE scenario information to partners and other models for their specific assessments. | ||
==Model description== | ==Model description== | ||
Land cover and land use described in an IMAGE scenario is a compilation of output from various IMAGE components. This compilation provides insight into key processes in land-use change described in the model and an overview of all gridded land cover and land use information available in IMAGE (Table below). | Land cover and land use described in an IMAGE scenario is a compilation of output from various IMAGE components. This compilation provides insight into key processes in land-use change described in the model and an overview of all gridded land cover and land use information available in IMAGE (Input/Output Table below). | ||
Land cover and land use is also the basis for the land availability assessment, which provides information on regional land supply to the [[Agricultural economy|agro-economic model]] , based on potential crop yields, protected areas, and external datasets such as slope, soil properties, and wetlands ([[Mandryk et al., | Land cover and land use is also the basis for the land availability assessment, which provides information on regional land supply to the [[Agricultural economy|agro-economic model]] , based on potential crop yields, protected areas, and external datasets such as slope, soil properties, and wetlands ([[Mandryk et al., 2015]]). | ||
|FrameworkElementType=interaction component | |FrameworkElementType=interaction component | ||
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