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Filtering by: Creator Colwell, Frederick Remove constraint Creator: Colwell, Frederick Subject Soils -- Oregon Remove constraint Subject: Soils -- Oregon

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  • Genesis of some soils in the central western Cascades of Oregon

    Creator:
    Brown, R. B.
    Abstract:
    Soils representative of several landscape units in the H. J. Andrews Experimental Forest, Western Cascade Range, were sampled, analyzed, and tentatively classified. Genetic inferences were drawn relating soils to landscape position and other factors of soil formation. Descriptive information and nutrient capital data were provided to support ecosystem modelling efforts...
    Resource Type:
    Masters Thesis
    Full Text:
    particle size distribution was uniform throughout the chronosequence. Zinke and Colwell (1963) looked at

  • Infiltration, soil erosion, nitrogen loss and soil profile characteristics of Oregon lands occupied by three subspecies of Artemisia tridentata

    Creator:
    Swanson, Sherman R.
    Abstract:
    Infiltration, soil erosion, nitrogen loss and soil profile characteristics were measured on 36 sites representing land occupied by Artemisia tridentata ssp. tridentate, wyomingensis, and vaseyana. Infiltration, soil erosion, and nitrogen loss were strongly correlated but highly variable. Soil loss, but not infiltration or nitrogen loss was significantly different between subspecies....
    Resource Type:
    Dissertation
    Full Text:
    watershed lightly rather than moderately." Daubenmire and Colwell (1942) described some edaphic changes