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This dictionary includes a number of mathematical, statistical and computing terms and their definitions to assist geoscientists and provide guidance on the methods and terminology encountered in the literature. Each technical term used in the explanations can be found in the dictionary which also includes explanations of basics, such as trigonometric functions and logarithms. There are also citations from the relevant literature to show the term’s first use in mathematics, statistics, etc. and its subsequent usage in geosciences.
Remote sensing and digital image analysis techniques offer potential for assisting in the analysis of large forest tracts for identification of appropriate ecosystem classes at a variety of spatial resolutions or scales. In this report, the evolution of forest ecosystem classification is discussed in relation to site and stand characteristics. The role of remote sensing for ecological and forestry applications is also reviewed along with some of the major issues in digital image classification. In addition, the issues of spatial resolution are discussed, particularly with respect to the relationship between surface features (objects and phenomena that contribute to spectral reflectance) and spatial resolution, and how this relationship affects classification accuracy.
In the study reported in this document, three complementary methodologies using existing mapped and remotely sensed data for a 400-square-kilometre test area in northern Ontario were developed and tested to discriminate forest soil conditions important to operational forest management planning. All three approaches use geographic information system technology in concert with expert systems to define soil polygons, and appear to be especially suitable for geographic areas where appropriate forest soil mapping is either currently unavailable, is of unknown quality, or is available only at smaller than required scales. The methods integrate digital spatial data from five sources such as provincial forest resource inventories, satellite imagery, and National Topographic System base maps.