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vol. 5, nr. 2 (2005)
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Application of GPS-GIS technology for water erosion assessment on large areas
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Marek Podlasiński, Adam Koćmit, Adam Bujak
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Department of Soil Erosion and Soil Reclamation, University of Agriculture, ul. Papieża Pawła VI 3, 71-442 Szczecin |
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vol. 5 (2005), nr. 2,
pp. 393-400
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abstract:
Intensive processes of erosion sometimes cause the appearance of very large numbers of rills and areas of deposition. In the early spring there is a real threat that these forms will be destroyed by agronomical practices. That is why there is a need to map the pattern of rills, and to determine their parameters in a very short time. Traditionally, representative sites are selected within a field, complicated measurements are taken manually, and then erosion estimations are made for larger areas, e.g. a small catchment. The authors suggested the application of the GPS-GIS method for rills and deluvial fans. The applied method of water erosion assessment solves several problems, normally encountered in traditional measures. The most important thing is that one can determine the rill pattern with a relatively high accuracy (error below 10%). Another advantage of the described method is the relatively short time of measurements, impossible to obtain with traditional methods. Moreover, a great facilitation of this method is documentation control directly in the field, with the help of a palmtop, and possibility of entering corrections, which could not be done at a later time . Based on the total register of sediments and rills pattern within the investigated field, one can obtain more reliable estimations for the whole catchment.
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keywords:
GPS-GIS technique, water erosion, wash rate, moraine region
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original in:
Polish
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