Agricultural Policies and Soil Degradation in Western Canada: An Agro-Ecological Economic Assessment: Report 3. The Integration of the Environmental and Economic Components

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dc.creatorBouzaher, Aziz
dc.creatorShogren, Jason F.
dc.creatorHoltkamp, Derald
dc.creatorGassman, Philip W.
dc.creatorArcher, David W.
dc.creatorLakshminarayan, P.G.
dc.creatorCarriquiry, Alicia L.
dc.creatorReese, Randall
dc.creatorFurtan, William Hartley
dc.creatorIzaurralde, R. Cesar
dc.creatorKiniry, James R.
dc.date2017-04-01T14:08:10Z
dc.date.accessioned2026-07-09T03:25:11Z
dc.descriptionThe interface between RS-CRAM and the environmental component of the integrated modeling system is described for crops, crop sequences, and management systems representative of western Canada. An experimentally designed set of EPIC simulations were performed to generate erosion output that was used to construct wind and water erosion metamodels (response functions). The results of the EPIC simulations indicate that wind and water erosion would be the dominant erosion problem over most of Saskatchewan and Manitoba. For Alberta, water erosion was predicted to be the dominant problem, except for the southern portion of the province. Erosion impacts were sensitive to tillage and cropping patterns. EPIC-predicted yields did not vary much across tillage, a result consistent with measured observations. However, the EPIC yield estimates tend to be higher than previous average census yields used in CRAM. The model also appears to underpredict yields of crops grown on fallow in the more humid regions of the Prairies. The wind and water erosion metamodels estimated for the three provinces are very robust, with the majority possessing R2 values in the range of 0.80 to 0.97. The predictive power of the metamodels is confirmed in validation tests comparing metamodel output with the original simulation data. The efficiency of the metamodels in facilitating the integration of the complete policy modeling system is described. Finally, the process of aggregating environmental indicators, estimated with the metamodels, from the landscape polygon level to ARAs and ultimately to the CRAM region level is also described.
dc.identifierdoi:10.22004/ag.econ.18681
dc.identifierhttps://ageconsearch.umn.edu/record/18681/files/sr950075.pdf
dc.identifierhttp://ageconsearch.umn.edu/record/18681
dc.identifier.urihttp://hdl.handle.net/123456789/532211
dc.languageeng
dc.publisher
dc.sourcehttp://ageconsearch.umn.edu/record/18681
dc.titleAgricultural Policies and Soil Degradation in Western Canada: An Agro-Ecological Economic Assessment: Report 3. The Integration of the Environmental and Economic Components
dc.typeText

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