Abstract
Abstract By studying aerial photographs, natural vegetation may be used diagnostically for detecting ground conditions. In cultivated areas, the growing of cereals is a mode of unifying the vegetation cover. When vegetation differences or pattern features are observed, they may be due to ground conditions and thus may reveal geological information about the area. For such conclusions, it is important to compare aerial photographs of the same area, and in the same season, taken in different years. In this paper, two vegetational patterns, a fluvial pattern and a polygonal pattern, in southern Sweden and in Jutland, Denmark, are studied from the diagnostical point of view. The vegetation of the test areas reveals fossil patterns of geomorphological processes that have createdd differences in the composition of the soil. The reverse reproduction of the polygon pattern between the Swedish area (black) and the Danish area (white) is due to opposite soil composition in the polygon lines in relation to the surrounding soil. Sequences of aerial photographs of test areas are compared, and the meteorological situation in the seasons of photography is discussed. From this analysis, it is evident that most information on ground conditions may be provided by aerial photographs taken in extreme meteorological situations.
Published Version
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