1. General Model Information

Name: Soil Depletion Estimates

Acronym: SDE

Main medium: terrestrial
Main subject: agriculture
Organization level: ecosystem
Type of model: compartment model
Main application:
Keywords: erosion, soil depletion, long term effect, soil conservation, depletion model, erosion control, conservation practices, physical depletion effects, economic effects, conservation policy, economics of conservation, resource management strategies, onsite depletion effects

Contact:

Leonard L. Bull and Daniel E. Kugler
Resources and Technology Division,
Economic Research Service, USDA,
1301 New York Avenue, NW
Washington, DC 20005-4788

Author(s):

Leonard L. Bull and Daniel E. Kugler.

Abstract:

The Soil Depletion Estimates model produces results that allow comparison of shortrun and longrun impacts on erosion and economic returns from alternative resource management systems. For each specified soil and resource management system, the model generates long-term onsite soil depletion effects and estimates the economic impacts over incremental time periods. This allows the selection of resource management systems based on economic profitability under alternative erosion control objectives. Prioritizing soil-resource management system combinations for targeting the application of soil erosion control measures is also possible by ranking one of the model output coefficients.

Source of the Abstract: SDE Users Guide

II. Technical Information

II.1 Executables:

Operating System(s): DOS

II.2 Source-code:

Programming Language(s): FORTRAN

II.3 Manuals:

SDE Users Guide

II.4 Data:

Example inputfile included in SDE-Report

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

III.2.2 Output

IV. References

Leonard L. Bull and Daniel E. Kugler. 1989 Soil Depletion Estimates: Version 2: A Users Guide to a Personal Computer Model For Estimating Long-Term Onsite Physical and Economic Impacts of Soil Depletion. Resources and Technology Division, Economic Research Service, U.S. Department of Agriculture. Staff Report No. AGES 89-63.

V. Further information in the World-Wide-Web