USDANRCSTexas Agricultural Experiment Station (TAES)USAID grant: Impact Methods to Predict and Assess Contributions of TechnologyAttwood, J.McCarl, Bruce A.Chen, Chi ChungEddleman, B.Nayda, B.Srinivasan, R.2016-04-192016-04-192000Agricultural Systems 63(3): 147-1590308-521Xhttp://hdl.handle.net/10919/65309Metadata only recordThere is an increasing demand for holistic analysis of proposed changes that addresses both environmental and economic factors and impacts. Because economic and environmental models typically have very different, seemingly irreconcilable structures, researchers may consider the expectations of policy makers unattainable. However, this paper presents a method for incorporating models with different spatial scales into a coherent national analysis. The authors combine an agricultural model with geographical boundaries on the state and county level and a watershed model with watershed boundaries. This method is the first to provide national analysis that includes economic results at the state and substate level and environmental results at the small watershed level. The example integrated model provides results for a national policy of cropland erosion control and dissemination of improved crop varieties by a state experiment station.text/plainen-USIn CopyrightEconomic analysesSoil erosionResource lawEnvironmental impactsGovernment policyModelingEconomic modeling and analysisEconomic impactsNational planningAgricultureResource policyResource modelingAgricultureWatershedEnvironmentEconomicsMathematical programmingAgricultural Sector Model (ASM)SWAT modelRegional economic/environmental appraisals (reea)Crop mixesGovernance WatershedAbstractCopyright 2000 Elsevier Science Ltd