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    Author(s): R. M. Rice; P. A. Datzman
    Date: 1981
    Source: In: Timothy R. H. Davies and Andrew J. Pearce (eds.), Erosion and Sediment Transport in Pacific Rim Steeplands, Proceedings of the Christchurch Symposium, 25-31 January 1981, Christchurch, New Zealand. Int. Assn. Hydrol. Sci. Pub. No. 132: 362-374.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (138 KB)

    Description

    Abstract - Erosion and site conditions were measured at 102 logged plots in northwestern California. Erosion averaged 26.8 m 3 /ha. A log-normal distribution was a better fit to the data. The antilog of the mean of the logarithms of erosion was 3.2 m 3 /ha. The Coast District Erosion Hazard Rating was a poor predictor of erosion related to logging. In a new equation that ""explained"" about 40 percent of the variability in erosion, yarding method was associated with a 3.7-fold difference in erosion, aspect with a 4.3-fold difference, geologic type with a 13.5-fold difference, and slope with a 16-fold difference. The analysis suggests that an additional source of variation was operative that may be related to how the logging was done. Future investigations, therefore, should focus more on the conduct of logging operations than descriptions of the site logged.

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    Citation

    Rice, R. M.; Datzman, P. A. 1981. Erosion associated with cable and tractor logging in northwestern California. In: Timothy R. H. Davies and Andrew J. Pearce (eds.), Erosion and Sediment Transport in Pacific Rim Steeplands, Proceedings of the Christchurch Symposium, 25-31 January 1981, Christchurch, New Zealand. Int. Assn. Hydrol. Sci. Pub. No. 132: 362-374.

    Keywords

    PSW4351, erosion, sediment transport, erosion hazard rating, slope, cable and tractor logging, timber harves

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