Article history: Sustainably accommodating future population growth and meeting global food requirements requires Received 21 January 2017 understanding feedbacks between ecosystems and belowground hydrological processes. Here, we intro- Received in revised form 4 May 2017 duce MODFLOW-AgroIBIS (MAGI), a new dynamic ecosystem model including groundwater ﬂow, and Accepted 5 June 2017 use MAGI to explore the indirect impacts of land use change (urbanization) on landscape-scale agroe- Available online 12 June 2017 cosystem productivity (corn yield). We quantify the degree to which urbanization can indirectly impact yield in surrounding areas by changing the amount of groundwater recharge locally and the water table Keywords: dynamics at landscape scales. We ﬁnd that urbanization can cause increases or decreases in yield else- Land use change where, with changes up to approximately +/− 40% under the conditions simulated due entirely to altered Groundwater recharge groundwater-land surface interactions. Our results indicate that land use change in upland areas has the Urbanization largest impact on water table depth over the landscape. However, there is a spatial mismatch between Agroecosystem modeling Dynamic vegetation models areas with the largest water table response to urbanization elsewhere (upland areas) and locations with Groundwater-land surface coupling the strongest yield response to
Ecological Modelling – Elsevier
Published: Sep 10, 2017
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