Showing papers on "Digital soil mapping published in 1970"
TL;DR: The connection between soil genesis, soil classification and soil survey is represented in a system of propositions and conclusions which cover the connection between permanent soil characteristics, state factors of soil formation and genetic processes.
37 citations
TL;DR: In this paper, the application of the statistical prediction technique to analytical soil survey data has been discussed, and the results of the analysis were used for soil utilization and for field mapping.
Abstract: The high degree of variability peculiar to analytical soil survey data has generally precluded its systematic characterization. This paper deals with the application of the Statistical Prediction Technique to such data and contains eight contour maps of surface mineral horizons to illustrate the results. In addition, significant correlation coefficients between properties of the A horizons are included. It is expected that information yielded by this approach would be useful for soil utilization and for field mapping.
6 citations
Journal Article•
TL;DR: The application of remote sensing to soils mapping was investigated and color film proved best for mapping soils and soil conditions and the last method showed to be the best.
Abstract: THE APPLICABILITY OF MULTISPECTRAL REMOTE SENSING TO ENGINEERING SOILS MAPPING WAS INVESTIGATED USING 15-CHANNEL IMAGERY AND FOUR TYPES OF AERIAL PHOTOGRAPHS. COLOR FILM PROVED BEST FOR MAPPING SOILS AND SOIL CONDITIONS AND ALSO WAS MOST ECONOMICAL BECAUSE INTERPRETATION TIME WAS LESS AND THE RESULTS MOST RELIABLE. COLOR PRINTS WITH COLOR INFRARED TRANSPARENCIES PROVED THE BEST COMBINATION OF METHODS. ANALYSIS OF THE MULTISPECTRAL DATA BY VISUAL METHODS, DENSITOMETRY, AND COMPUTER SHOWED THE LAST METHOD TO BE THE BEST. A SPECIAL FEATURE IN THE COMPUTER ANALYSIS IS SELECTION OF OPTIMUM COMBINATIONS OF CHANNELS. OPTIONS IN THE PROGRAMS PERMIT SEPARATE MAP DISPLAYS, SHOWING VARIOUS SOILS AND SOIL CONDITIONS, TO BE DEVELOPED BY COMPUTER. THE SPECTRAL RESPONSE CONCEPT IS VALID FOR SOILS MAPPING, BUT ADEQUATE CONTROL IS NECESSARY TO ASSIST IN AUTOMATIC ANALYSIS. VEGETATIVE COVER IS A LIMITING FACTOR. /AUTHOR/
4 citations