Using a hybrid demand-allocation algorithm to enable distributional analysis of land use change patterns.

Future land use projections are needed to inform long-term planning and policy. However, most projections require downscaling into spatially explicit projection rasters for ecosystem service analyses. Empirical demand-allocation algorithms input coarse-level transition quotas and convert cells acros...

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Main Authors: Evan B Brooks, John W Coulston, Kurt H Riitters, David N Wear
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2020-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0240097
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author Evan B Brooks
John W Coulston
Kurt H Riitters
David N Wear
author_facet Evan B Brooks
John W Coulston
Kurt H Riitters
David N Wear
author_sort Evan B Brooks
collection DOAJ
description Future land use projections are needed to inform long-term planning and policy. However, most projections require downscaling into spatially explicit projection rasters for ecosystem service analyses. Empirical demand-allocation algorithms input coarse-level transition quotas and convert cells across the raster, based on a modeled probability surface. Such algorithms typically employ contagious and/or random allocation approaches. We present a hybrid seeding approach designed to generate a stochastic collection of spatial realizations for distributional analysis, by 1) randomly selecting a seed cell from a sample of n cells, then 2) converting patches of neighboring cells based on transition probability and distance to the seed. We generated a collection of realizations from 2001-2011 for the conterminous USA at 90m resolution based on varying the value of n, then computed forest area by fragmentation class and compared the results with observed 2011 forest area by fragmentation class. We found that realizations based on values of n ≤ 256 generally covered observed forest fragmentation at regional scales, for approximately 70% of assessed cases. We also demonstrate the potential of the seeding algorithm for distributional analysis by generating 20 trajectories of realizations from 2020-2070 from a single example scenario. Generating a library of such trajectories from across multiple scenarios will enable analysis of projected patterns and downstream ecosystem services, as well as their variation.
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spelling doaj.art-48cd0649628546329507b3f08483a16a2022-12-21T18:39:43ZengPublic Library of Science (PLoS)PLoS ONE1932-62032020-01-011510e024009710.1371/journal.pone.0240097Using a hybrid demand-allocation algorithm to enable distributional analysis of land use change patterns.Evan B BrooksJohn W CoulstonKurt H RiittersDavid N WearFuture land use projections are needed to inform long-term planning and policy. However, most projections require downscaling into spatially explicit projection rasters for ecosystem service analyses. Empirical demand-allocation algorithms input coarse-level transition quotas and convert cells across the raster, based on a modeled probability surface. Such algorithms typically employ contagious and/or random allocation approaches. We present a hybrid seeding approach designed to generate a stochastic collection of spatial realizations for distributional analysis, by 1) randomly selecting a seed cell from a sample of n cells, then 2) converting patches of neighboring cells based on transition probability and distance to the seed. We generated a collection of realizations from 2001-2011 for the conterminous USA at 90m resolution based on varying the value of n, then computed forest area by fragmentation class and compared the results with observed 2011 forest area by fragmentation class. We found that realizations based on values of n ≤ 256 generally covered observed forest fragmentation at regional scales, for approximately 70% of assessed cases. We also demonstrate the potential of the seeding algorithm for distributional analysis by generating 20 trajectories of realizations from 2020-2070 from a single example scenario. Generating a library of such trajectories from across multiple scenarios will enable analysis of projected patterns and downstream ecosystem services, as well as their variation.https://doi.org/10.1371/journal.pone.0240097
spellingShingle Evan B Brooks
John W Coulston
Kurt H Riitters
David N Wear
Using a hybrid demand-allocation algorithm to enable distributional analysis of land use change patterns.
PLoS ONE
title Using a hybrid demand-allocation algorithm to enable distributional analysis of land use change patterns.
title_full Using a hybrid demand-allocation algorithm to enable distributional analysis of land use change patterns.
title_fullStr Using a hybrid demand-allocation algorithm to enable distributional analysis of land use change patterns.
title_full_unstemmed Using a hybrid demand-allocation algorithm to enable distributional analysis of land use change patterns.
title_short Using a hybrid demand-allocation algorithm to enable distributional analysis of land use change patterns.
title_sort using a hybrid demand allocation algorithm to enable distributional analysis of land use change patterns
url https://doi.org/10.1371/journal.pone.0240097
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