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Mapping the Nexus: A County-Level Analysis and Visualization of Iowa’s Food–Energy–Water Systems

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  • Júlia Brittes Tuthill

    (Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, USA)

  • Amy Kaleita

    (Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, USA)

Abstract

This study presents a county-level analysis and visual assessment of Iowa’s Food–Energy–Water systems (IFEWs), focusing on the interdependencies of agricultural practices, nitrogen management, and energy production. We use data from the USDA National Agricultural Statistics Service and other sources to assess cropland-nitrogen sources, animal-based-nitrogen contributions, and ethanol production capacity across Iowa’s counties. Our methodology leverages geoprocessing and interpolation tools to address data availability challenges and refine nitrogen surplus (Ns) estimates. The results reveal spatial–temporal dynamics of cropland-nitrogen, quantify non-point nitrogen sources at the county level, and evaluate the impact of energy systems on the IFEWs balance. We discuss the implications of our findings for sustainable agriculture, environmental management, and energy production in Iowa. The study highlights the need for integrated approaches to address the complex interactions within the IFEWs and informs policy development for sustainable resource management.

Suggested Citation

  • Júlia Brittes Tuthill & Amy Kaleita, 2024. "Mapping the Nexus: A County-Level Analysis and Visualization of Iowa’s Food–Energy–Water Systems," Sustainability, MDPI, vol. 16(13), pages 1-21, June.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:13:p:5591-:d:1425767
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    References listed on IDEAS

    as
    1. Mohammad Alshawaf & Ellen Douglas & Karen Ricciardi, 2016. "Estimating Nitrogen Load Resulting from Biofuel Mandates," IJERPH, MDPI, vol. 13(5), pages 1-20, May.
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