Download or read book Soil Survey Gem County Area Idaho written by United States. Soil Conservation Service and published by . This book was released on 1965 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey of Payette County Idaho written by Lyman Merrill Rasmussen and published by . This book was released on 1976 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey written by and published by . This book was released on 1965 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey written by United States. Soil Conservation Service and published by . This book was released on 1958 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey of various Counties Etc written by and published by . This book was released on 1976 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey of Ada County Area Idaho written by Russell A. Collett and published by . This book was released on 1980 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publications of the Geological Survey written by Geological Survey (U.S.). and published by . This book was released on 1991 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abstracts of Recent Published Material on Soil and Water Conservation written by and published by . This book was released on 1961 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstracts for Dec. 1954- issued in the Agricultural Research Service's series ARS-41.

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1966 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey Reports list written by and published by . This book was released on 1955 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Publications of the U S Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1992 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wildlife Abstracts written by U.S. Fish and Wildlife Service and published by . This book was released on 1954 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1966 with total page 914 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report to Collaborators written by Regional Salinity Laboratory (U.S.) and published by . This book was released on 1948 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Survey of Valley Area Idaho Parts of Adams and Valley Countries United States Department of Agriculture Soil Conservation Service in Cooperation with University of Idaho College of Agriculture and Idaho Soil Conservation Commission written by Lyman Merrill Rasmussen and published by . This book was released on 1981 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A List of Geographical Atlases in the Library of Congress Titles 10255 18435 written by Library of Congress. Map Division and published by . This book was released on 1973 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Some Strategies of Quality Control for Reconnaissance Soil Survey written by Humberto G. dos Santos and published by . This book was released on 1978 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil maps of nine areas representing distinct physiographic patterns and land use were evaluated by three different procedures to study the accuracy in predicting mapping unit composition, and the relevance of procedures for different kinds of areas in relation to effort required. The physiographic and soil patterns studied are believed to be representative of range, forest, and mixed range and forest in mountainous terrain, nearly level, rainfed and irrigated cropland, general farming in rolling and hilly terrain, coastal areas and desert areas. Delineations of selected soil association on generalized soil maps at scales ranging from 1:190,080 to 1:380,160 were tested by point transects, line transects and pilot areas using soil surveys at scales of 1:20,000 or larger as the ground truth. Topographic maps and aerial photographs were used to identify physiographic units, land use patterns and topographic characteristics. Random transects that crossed the grain of the landscape were selected and drawn on detailed soil maps of each of the study areas. With the point transect method, soil units were noted on pre-fixed point at constant intervals of 0.05 kilometer up to 4.0 kilometers along the paths of observation. Soil units were noted along the same transect using different intervals, that is, observations at each 0.05 kilometer along its entire length, then at each 0.1 kilometer and so on up to 4.0-kilometer intervals. Line transects were located similarly, and all soil changes along the of observation noted. Pilot areas were selected to depict small, representative areas according to physiographic features that could be extrapolated to similar units of landscapes. Point transects provided the number of point observations of each soil unit; line transects provided length, in kilometers, of soil units between soil changes; and pilot areas provided the extension, in hectares, of each soil unit observed. Because transects and pilot areas were of different sizes, data obtained by these procedures were statistically analyzed by a cluster type of analysis to estimate proportions of kinds of soils in each association. In additon to proportions of soil units, confidence intervals, accuracy of predicting mapping unit composition, standard deviation, standard error of the mean, coefficient of variation and number of elements needed (transects or pilot areas) were calculated. The numbers of transects and pilot areas were calculated to meet certain probability levels. For example, 80 percent probability with 10 percent allowable error around the mean was used for mountainous areas, and 95 percent probability with 10 percent allowable error for all other areas. Point transects with intervals between observations ranging from 0.05 Kilometer to 0.2 kilometer required more effort per square kilometer than line transects or point transects with larger intervals between observations. Effort per square kilometer decreased with increasing spacing between observations along point transects, but the number of transects needed to meet predetermined levels of accuracy tended to increase when intervals larger than 0.5 kilometer were used. Increasing the number of transects or pilot areas to test soil association provided more accurate estimates of soil proportions and smaller erros of estimations, however, with increasing effort per square kilometer. Based on number of transects and pilot areas needed to attain the accuracy level fixed for the study areas, it was found that the effort per square kilometer varies with profound that the effort per square kilometer varies with procedure and type of landscape. In general, the point and line transects required less effort per square kilometer in all areas tested. Point transects with intervals between observations ranging from 0.2 kilometer to 2.0 kilometer generally required less effort in most of the test areas. For some areas the line transect method is equivalent or slightly better than point transects in terms of effort in man-hours/km2.