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Using Backcast Land-Use Change and Groundwater Travel-Time Models to Generate Land-Use Legacy Maps for Watershed Management

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Type: Journal Article
Author: Pijanowski, Bryan; Ray, Deepak K.; Kendall, Anthony D.; Duckles, Jonah M.; Hyndman, David
Journal: Ecology and Society
Volume: 12
Date: 2007
URI: https://hdl.handle.net/10535/3206
Sector: Water Resource & Irrigation
Land Tenure & Use
Subject(s): land tenure and use
water management
Abstract: "We couple two spatial-temporal models, a backcast land-use change model and a groundwater flow model, to develop what we call land-use legacy maps. We quantify how a land-use legacy map, created from maps of past land use and groundwater travel times, differs from a current land-use map. We show how these map differences can affect land-use planning and watershed management decisions at a variety of spatial and temporal scales. Our approach demonstrates that land-use legacy maps provide a more accurate representation of the linkage between land use/cover and current water quality compared to the current land-use map. We believe that the historical signatures of land-use impacts on current water quality should be considered in land-use planning and watershed management."

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