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simulating_patterns_of_change [2020/07/16 01:45] argemiro |
simulating_patterns_of_change [2020/07/16 01:53] argemiro |
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| * The capability of the **Dinamica EGO** to reproduce a wide range of spatial patterns of change; | * The capability of the **Dinamica EGO** to reproduce a wide range of spatial patterns of change; | ||
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| - | The combination of Dinamica's transition function presents numerous possibilities with respect to the generation and evolvement of spatial patterns of change. As a result, **Dinamica EGO** can be considered as a potential tool for the replication of dynamic landscape structures. The calibration of a simulated landscape can be achieved by a series of simulation using varying parameters. An approximated solution can be attained comparing landscape metrics, such as fractal index, patch cohesion index, nearest neighbor distance, and mean patch size, of the simulated maps with the ones of the reference landscape. | + | The combination of Dinamica's transition function presents numerous possibilities with respect to the generation and evolvement of spatial patterns of change. As a result, **Dinamica EGO** can be considered as a potential tool for the replication of dynamic landscape structures. The calibration of a simulated landscape can be achieved by a series of simulation using varying parameters. An approximated solution can be attained comparing [[tutorial:landscape_metrics_in_dinamica_ego|landscape metrics]], such as fractal index, patch cohesion index, nearest neighbor distance, and mean patch size, of the simulated maps with the ones of the reference landscape. |
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| - | I) The spatial arrangement of the simulated landscape needs to be approximated to the one of the reference landscape by defining the weights of evidence for the modeled transitions and thereby their transition probabilities maps (See more at [[tutorial:building_a_land-use_and_land-cover_change_simulation_model|Building a land-use and land-cover change simulation model]] ; | + | I) The spatial arrangement of the simulated landscape needs to be approximated to the one of the reference landscape by defining the weights of evidence for the modeled transitions and thereby their transition probabilities maps (See more at [[tutorial:building_a_land-use_and_land-cover_change_simulation_model|Building a land-use and land-cover change simulation model]]); |
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| - | The fractal dimension reveals the patch complexity. It is as a function of inner area in relation to the patch edge and varies from 1 to 2. Therefore, the fractal dimension is affected by the patch shape and size (Forman and Godron, 1986). According to McGarical and Marks (1995), the patch cohesion index gives an indication of the level of fragmentation of a landscape and thereby the habitat connectivity, thus large cohesion index indicates less fragmentation. In turn, the nearest neighbor distance shows the dispersion of patches in a landscape. | + | The fractal dimension reveals the patch complexity. It is as a function of inner area in relation to the patch edge and varies from 1 to 2. Therefore, the fractal dimension is affected by the patch shape and size (Forman and Godron, 1986). According to McGarical and Marks (1995), the patch cohesion index gives an indication of the level of fragmentation of a landscape and thereby the habitat connectivity, thus large cohesion index indicates less fragmentation. |
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| + | <note>The nearest neighbor distance shows the dispersion of patches in a landscape.</note> | ||
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| - | **H7:** There is no spatial arrangement and no patch aggregation. Expander percentage is 0, patch mean size is 1 , and patch size variance is 0. Transitions take place randomly only obeying the amounts of change set by the transition matrix. Simulations are run for 1 0 time steps. | + | **H7:** There is no spatial arrangement and no patch aggregation. Expander percentage is 0, patch mean size is 1, and patch size variance is 0. Transitions take place randomly only obeying the amounts of change set by the transition matrix. Simulations are run for 1 0 time steps. |
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| + | ☞[[:guidebook_start| Back to Guidebook Start]] | ||
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