Analysis of the Geomorphic Features and Spatial Location of Landscapes with the Use of Geoinformatics and Statistic Approaches
N. V. POMAZKOVA, V. Y. ABAKUMOVA
a:2:{s:4:"TYPE";s:4:"TEXT";s:4:"TEXT";s:97:"Institute of nаtural resources, ecology and cryology, SB RAS, 672014, Chita, Nedorezova str., 16a";}
Keywords: ландшафты, цифровая модель рельефа, дискриминантный анализ, landscapes, geomorphic features, digital elevation model, discriminant anаlysis
Abstract
The article is devoted to study of geomorphic features impact on landscapes. The object of study was a small river basin in Zabaikalsky Krai (Russia) where 33 landscape units were contoured. Six terrain attributes (elevation, directional slope, wetness index, plan curvature, profile curvature, standard deviation of slope) were calculated from digital elevation model and were used as variables for discriminant analysis. Root 1 was responsible for 81 % of variance and had the biggest correlation with elevation. Root 2 (9 % of variance) correlated with directional slope, root 3 (6 % of variance) - with standard deviation of slope and profile curvature, root 4 (3 % of variance) - with wetness index and profile curvature. Also, some characteristics of summer air temperature (day mean and extremes) were used as variables for discriminant analysis. Valley landscapes were coldest at the average; the burnt wood area had the biggest extremes.
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