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; | ||
|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; Land systems - grid; | |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; Land systems - grid; | ||
|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>Interaction between the human system and environmental system</h2> | |Description=<h2>Interaction between the human system and environmental system</h2> | ||
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Using the demand for land to produce agricultural food products and bio-energy, the Land Allocation model determines at a 5 min x 5 min grid where this production occurs using a set of allocation rules. For instance, grid cells with a high potential to produce agricultural products (in terms of climate, soil types), that are near water (for transport and irrigation) and near to existing urban or agricultural areas are considered to be most suitable for agricultural production. In the model these rules in combination with regional preferences for different types of production systems, determined from historical calibration, are used to allocated land use to the grid. | Using the demand for land to produce agricultural food products and bio-energy, the Land Allocation model determines at a 5 min x 5 min grid where this production occurs using a set of allocation rules. For instance, grid cells with a high potential to produce agricultural products (in terms of climate, soil types), that are near water (for transport and irrigation) and near to existing urban or agricultural areas are considered to be most suitable for agricultural production. In the model these rules in combination with regional preferences for different types of production systems, determined from historical calibration, are used to allocated land use to the grid. | ||
{{DisplayFigureLeftOptimalTemplate|Policy intervention figure LCU|plain}} | {{DisplayFigureLeftOptimalTemplate|Policy intervention figure LCU|plain}} | ||
As observed in other baseline scenarios, in the [[Roads from Rio+20 (2012) project|Rio+20]] baseline the expansion of agricultural production in tropical regions leads to a loss of natural ecosystems, and an associated loss of biodiversity. In fact, most of the expansion is projected to occur in highly productive ecosystems near existing agricultural areas, thus including tropical forests and woodland, other high nature value savanna and grassland area. At the same time, in the temperate zones there is actually a contraction of the agricultural area. Here, the grid cells least suitable for production potential are abandoned. The resulting changes in agricultural area are depicted in the figure on the left. | As observed in other baseline scenarios, in the [[Roads from Rio+20 (2012) project|Rio+20]] baseline the expansion of agricultural production in tropical regions leads to a loss of natural ecosystems, and an associated loss of biodiversity. In fact, most of the expansion is projected to occur in highly productive ecosystems near existing agricultural areas, thus including tropical forests and woodland, other high nature value savanna and grassland area. At the same time, in the temperate zones there is actually a contraction of the agricultural area. Here, the grid cells least suitable for production potential are abandoned. The resulting changes in agricultural area are depicted in the figure on the left. | ||
|FrameworkElementType=state component | |FrameworkElementType=state component | ||
}} | }} | ||
[[Page has default form::SimpleComponentForm| ]] | [[Page has default form::SimpleComponentForm| ]] | ||