DBPapers
DOI: 10.5593/SGEM2016/B23/S11.026

EVALUATION OF ANNUAL SOIL LOSS THROUGH SURFACE EROSION IN THE TERRITORY BARA, ROMANIA

L. Dragomir, C. Popescu, M. Herbei,R. Bertici, G. Popescu
Friday 9 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-60-5 / ISSN 1314-2704, June 28 - July 6, 2016, Book2 Vol. 3, 199-206 pp

ABSTRACT
There are several methods of quantitative evaluation of surface soil erosion. The main purpose of this study is to determine the amount annually of soil lost by surface erosion at territory Bara, Romania, using formulas applied through Geographic Information Systems. It also desired to produce maps of erosion factors, that can be used to carry out analyzes and forecasts. To determine the average annual quantity of eroded soil, modified Universal Soil Loss Equation was used, for the specific conditions of Romania. Equation coefficients values were used according to specific environmental conditions of the area. The territory Bara is located in the low hills (altitudes between 128 - 278 m) and according to Fournier Index, rainfall aggression is very low. The average annual eroded soil ranges from 0 to 2,766 t/ha/year. Of the total area, 99% "lose" an annual quantity of soil below 1 t/ha/year (very low susceptibility class) and 1% of the territory lost annually on average up to 2,766 t/ha/year (low susceptibility class), which is highlighting good vegetation cover (forest, shrubs) and areas with significant share of low slope. We used data and maps to medium scale, but, at the micro-regions this phenomenon can occur with greater intensity.

Keywords: risk, quantity, erosion, estimate, representation

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