Soil Conservation -- Copyright -- Preface -- Acknowledgments -- Contents -- Executive Summary -- A BASIC CONCLUSION -- SOME PRIORITIES -- ANALYTICAL APPLICATIONS TO SUPPORT CONSERVATION -- Program Development -- Erosion Prediction Equations -- LEVERAGING BENEFICIAL USES OF THE NRI -- Understanding the Erosion-Productivity Relationship -- Assessing Agricultural Runoff in Relation To Water Quality -- Magnitude and Scope of Future NRIs -- 1 Scope and Content of the 1982 NRI -- USES OF THE 1982 NRI -- Trend Analysis -- Classification of Soils According To Rates of Erosion -- Identification of Needs and Opportunities -- Relating the Nri To Water Quality and Other Environmental Issues -- Tool For Research and Policy Analysis -- INFORMATION FROM THE 1982 NRI -- Land Use and Soil Erosion Rates -- Soil Erosion in Relation To Soil Loss Tolerances -- Concentration of Erosion -- Soil Conservation Practices On Cropland -- 2 Improving Federal Resource Assessment Efforts -- COMPILATION AND DISSEMINATION OF NRI DATA -- Upgrading Inventory and Monitoring Functions of the SCS -- Statistical Documentation -- Presentation of Published Data -- Distribution of NRI Computer Tapes -- USE OF SENSING TECHNOLOGIES IN FUTURE NRIS -- EXPANSION OF NRI COVERAGE TO FEDERAL LANDS -- INCLUSION OF DATA RELATED TO WATER QUALITY -- 3 The Measures of Soil Erosion -- NRI ESTIMATES OF SHEET AND RILL EROSION: THE USLE -- NRI Findings On Average Usle-Factor Values -- Uncertainties Associated with C-Factor Values -- Recommendations on the USLE -- WIND EROSION ESTIMATES -- Limitations of the WEE -- Improving Wind Erosion Prediction -- EROSION BY CONCENTRATED FLOW: EPHEMERAL GULLIES -- 4 On-Farm and Off-Farm Consequences of Soil Erosion -- EFFECTS OF EROSION ON PRODUCTION COSTS -- Short-Term Costs -- Long-Term Costs -- Long-Term Productivity -- EROSION-PRODUCTIVITY MODELS -- The PI Model.

The EPIC Model -- SOIL EROSION AND WATER QUALITY -- Potential Uses of NRI Data -- 5 Assessing Conservation Practices and Land Classification Schemes -- CONSERVATION PRACTICES -- Concentration of Sheet and Rill Erosion on Cropland -- Implications for Policy and Program Administration -- THE LAND CAPABILITY CLASS SYSTEM -- Factors of Inconsistency -- Rates of Erosion: A Basis For Classification -- Regional Analyses -- Changes in Land Use -- ALTERNATIVE LAND CLASSIFICATION SCHEMES -- PROPOSED OPTIONS TO THE LCCS -- References -- Appendix -- NOTES TO APPENDIX -- Index.