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A Systems Approach for Agricultural Land Management and Water Quality Control

Dissection of a Sediment Yield Optimization Model Nathan Clarke, Laura Navitsky , David Stein and Kaylyn Rossi. A Systems Approach for Agricultural Land Management and Water Quality Control. BE 469W February 28 th , 2013. Background. Background.

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A Systems Approach for Agricultural Land Management and Water Quality Control

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  1. Dissection of a Sediment Yield Optimization Model Nathan Clarke, Laura Navitsky, David Stein and Kaylyn Rossi A Systems Approach for Agricultural Land Management and Water Quality Control BE 469W February 28th, 2013

  2. Background

  3. Background Sediment pollution causes $16 billion in damage annually • Requires rehabilitation of wildlife habitats • Prevents natural vegetation growth • Disrupts food chain • Lowers growth rates/Affects larvae development

  4. A Binary Linear Programming Approach • Prediction of Average Annual Sediment Loss of Practical Management Strategies using the Finite Element Storm Hydrograph Model and the Universal Soil Loss Equation • Selection of Land Management Strategies to Minimize Sediment Yield while Meeting Crop Needs of the Farmer Model Formulation

  5. ai, Average Annual Sediment Yield from a Flow Strip [=] metric ton/ha • Xi, Specific Land Use Strategy in a Given Flow Strip [=] unitless • The Potential Strategies are: • Conventional tillage, corn (CT) • Alfalfa (hay) (H) • No-till, corn (NT) Design variables

  6. constraints

  7. Formation of a Systems Approach to Evaluate Land Usage Considering Effects on Water Quality and Economic Feasibility • Minimize Total Sediment Yield from Agricultural Land Practices Objective function

  8. Results Trapanese BE 469W 3.08 4.16 Hay [Ha] Profit [$] 39,954.90 62,861.11 Sediment Yield [tonnes] 37.98 39.02

  9. Distributed Parameter Hydrologic Simulation Paired with Annual Storm Analysis was used to Calculate Average Annual Sediment Yields • Sediment Yield Became Coefficients in the Binary Linear Programming Model • 1.08 fewer hectares of hay • $22,906.20 increase in profit • 1.04 tonnesless of sediment yield Conclusions

  10. Trapanese, S.M., M.D. Smolen, and T.M. Younos. "A Systems Approach for Agricultural Land Management and Water Quality Control." Transactions of the ASCE 0001- 2351/84/2703-0817 (1984): 817-821. Print. • Mid America Regional Council, comp. What Is Sediment Pollution. Kansas City:n.p.,n.d.Print. http://marc.org/environment/Water/pdfs/ sediment.pdf References

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