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

Júlia Brittes Tuthill () and Amy Kaleita
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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

Sustainability, 2024, vol. 16, issue 13, 1-21

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.

Keywords: food–energy–water nexus; hypoxic zones; county-level analysis; nitrogen budget; geospatial analysis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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