National Pilot Program Integrated Modeling System: Environmental Baseline Assumptions and Results for the APEX Model. Livestock Series Report 9, The

Philip W. Gassman
July 1997  [97-SR 85]

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Gassman, P.W. 1997. "National Pilot Program Integrated Modeling System: Environmental Baseline Assumptions and Results for the APEX Model. Livestock Series Report 9, The." Staff report 97-SR 85. Center for Agricultural and Rural Development, Iowa State University.


Abstract

This paper presents the underlying assumptions and results for the Agricultural Policy/Environmental eXtender (APEX) model, which was applied within an integrated modeling system for the National Polio Program (NPP) environmental baseline simulations for the Upper North Bosque River Watershed area in Texas. The system consists of an economic model linked to an environmental component comprising the field-scale APEX and watershed-scale Soil Water Assessment Tool (SWAT) models. The results are edge-of-field environmental indicators obtained from the APEX model.