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    Author(s): John W. Hazard; Jeralyn Snellgrove; J. Michael Geist
    Date: 1985
    Source: Gen. Tech. Rep. PNW-GTR-179. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 26 p
    Publication Series: General Technical Report (GTR)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (587 KB)

    Description

    Program SOILS processes data from soil assessment surveys following a design adopted by the Pacific Northwest Region of the USDA Forest Service. It accepts measurements from line transects and associated soil subsamples and generates estimates of the percentages of the sampled area falling in each soil condition class. Total disturbance is calculated by combining certain detrimental soil condition classes. Variances and confidence intervals of the percentage of each class are computed. Summary or preliminary estimates may be inserted into the program for computing sample sizes to help in planning future surveys.

    A summary of the soil survey design for the Pacific Northwest Region, the estimation procedures, and the sample size calculation procedures are also provided.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Hazard, John W.; Snellgrove, Jeralyn; Geist, J. Michael. 1985. Processing data from soil assessment surveys with the computer program SOILS. Gen. Tech. Rep. PNW-GTR-179. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 26 p

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    Keywords

    Soil surveys, computer programs/programming, sampling designs

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