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    Author(s): Howard Evan Canfield; Vicente L. Lopes
    Date: 2000
    Source: In: Ffolliott, Peter F.; Baker Jr., Malchus B.; Edminster, Carleton B.; Dillon, Madelyn C.; Mora, Karen L., tech. coords. Land Stewardship in the 21st Century: The Contributions of Watershed Management; 2000 March 13-16; Tucson, AZ. Proc. RMRS-P-13. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 316-319.
    Publication Series: Proceedings (P)
    Station: Rocky Mountain Research Station
    PDF: View PDF  (204.45 KB)

    Description

    A process-based, simulation model for evaporation, soil water and streamflow (BROOK903) was used to estimate soil moisture change on a semiarid rangeland watershed in southeastern Arizona. A sensitivity analysis was performed to select parameters affecting ET and soil moisture for calibration. Automatic parameter calibration was performed using a procedure based on a Gauss-type downhill search algorithm and a least squares objective function. Results indicated that BROOK90 can be used to simulate changes in soil moisture content in the upper 15 cm on semiarid rangeland environments, an important realization for watershed management in the southwest.

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    Citation

    Canfield, Howard Evan; Lopes, Vicente L. 2000. Simulating soil moisture change in a semiarid rangeland watershed with a process-based water-balance model. In: Ffolliott, Peter F.; Baker Jr., Malchus B.; Edminster, Carleton B.; Dillon, Madelyn C.; Mora, Karen L., tech. coords. Land Stewardship in the 21st Century: The Contributions of Watershed Management; 2000 March 13-16; Tucson, AZ. Proc. RMRS-P-13. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 316-319.

    Keywords

    land stewardship, watershed management, ecosystem-based management, natural resources, conservation, sustainable development, sustainable use

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