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Creator:: Elnaggar, Abdelhamid A.
Abstract:: Conventional soil maps represent a valuable source of information about soil characteristics, however they are subjective, very expensive, and time-consuming to prepare. Also, they do not include explicit information about the conceptual mental model used in developing them nor information about their accuracy, in addition to the error associated with...
Resource Type:: Dissertation
Full Text:: Conventional to Digital Soil Mapping Techniques .............................. 17 Abstract

Creator:: Poore, Joel K.
Abstract:: Soils are 3-dimensional bodies that make up natural landscapes. In addition to the morphological properties used to characterize soils, soil bodies also have the properties of size and shape. Soil maps are made in an effort to provide information on the spatial distribution of different kinds of soils. Soil mappers...
Resource Type:: Masters Thesis
Full Text:: Soil Map Delineations in Benton County, Oregon by Joel K. Poore A THESIS submitted to Oregon State

Creator:: Hash, Sarah Jane
Abstract:: Soil surveys provide essential information for making land use and management decisions on publicly-owned lands in the semi-arid Great Basin. Soil maps produced with conventional mapping techniques are time-consuming, costly, and do not explicitly document the soil scientist's mental soil-landscape model. Predictive soils mapping using decision tree analysis (DTA) can...
Resource Type:: Masters Thesis
Full Text:: Soils Mapping and Implementation on the Malheur County, Oregon Initial Soil Survey by

Creator:: Kastens, Marilyn K.
Abstract:: The variability in morphologic, chemical, and physical soil properties within the Willakenzie silty clay loam, 2 to 12 percent slopes, map unit in Yamhill County, Oregon was measured. The objectives of the study included (1) describing the frequency distributions of individual soil properties, (2) measuring the taxonomic composition of the...
Resource Type:: Masters Thesis
Full Text:: horizons, which is not typical for the Willakenzie. The fact that soil mapping in Yamhill County took

Creator:: Sun, Yulin
Abstract:: Soil is a complex living system with high heterogeneity, which makes locating soil map boundaries a challenge. In traditional soil survey, the placement of soil map boundaries relies largely (at least initially) on identifying the soil-forming factors of biota and topographic relief through stereo aerial photo pairs. Future soil survey...
Resource Type:: Masters Thesis
Full Text:: photo pairs. Future soil survey is being automated with predictive digital soil mapping techniques

Creator:: Seeno, Elizabeth A.
Abstract:: Soil properties may hold the key to improved predictions of soils during digital soil mapping (DSM), which has developed with a focus on environmental factors external to soil. The spatial variability in soil properties was modeled across Malheur National Forest in eastern Oregon as an approach to improve DSM. The...
Resource Type:: Masters Thesis
Full Text:: words 'digital soil mapping'. Entries unrelated to soil science or soil mapping were excluded, such as

Creator:: Peterman, Wendy L.
Abstract:: This study explores the use of predictive mapping techniques in developing Landtype Association (LTA) maps for use in natural resource management. These maps are produced for the USDA Forest Service on a regional basis at a 1:100,000 scale. The goal of this study is to develop and test a method...
Resource Type:: Masters Thesis
Full Text:: State Factor Theory, reformulated for digital soil mapping (DSM) (McBratney et al., 1998, 2008; Hash

Creator:: Malone, Melanie R.
Abstract:: Predictive Soil Mapping (PSM) has recently become an attractive method for soil scientists wishing to develop a more objective and efficient approach to mapping soils. Due to the potential PSM has for reducing the effort to produce soil maps, as well as its ability to improve the classification accuracy of...
Resource Type:: Masters Thesis
Full Text:: Forest, Oregon. Abstract approved: Jay S. Noller Predictive Soil Mapping (PSM) has

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