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- Title
Use of CORINE Methodology to Assess Soil Erosion Risk in the Semi-Arid Area of Beypazarı, Ankara.
- Authors
Bayramin, İlhami; Erpul, Günay; Erdoǧan, Hakkı Emrah
- Abstract
Soil erosion is one of the major threats to the conservation of soil and water resources in the semi-arid and arid regions of Turkey. Therefore, there is a need to accurately assess soil erosion and accordingly determine the specific control activities adaptable to these conditions. Using the daily rainfall amounts recorded from 1958 to 2003 from 11 climate stations by the Turkish Meteorological Service in the semi-arid area of Beypazar, Ankara, Turkey, 5 different procedures of calculating the Modified Fournier Index (MFI) were performed to obtain the effect of rainfall variability and incidence of extreme storms on assessing ‘Actual Soil Erosion Risk’ (ASER) by CORINE methodology. MFI surface calculated from the averages of ith monthly rainfall amounts and averaged over a number of years (MFI(Multiple line equation(s) cannot be represent in ASCII text)) caused ASER to underestimate the soil erosion since it was statistically unable to account for the year-to-year variations in the rainfall data. In addition to within-year variations, introducing the year-to-year variations to MFI surface, which was estimated from the monthly rainfall amounts of each individual year and averaged over a number of years (MFIj-) to some extent refined ASER surface. However, ASER surfaces produced by the monthly return frequencies of rainfall events for 10 (MFI10), 20 (MFI20), and 30 (MFI30) years showed significant improvements and agreements with the erosion classes of the conventional soil survey of the study area.
- Subjects
TURKEY; SOIL erosion prediction; SOIL erosion &; climate; GEOPHYSICAL prediction; RAINFALL intensity duration frequencies; DEPTH-area-duration (Hydrometeorology); METEOROLOGICAL precipitation measurement; ATMOSPHERIC pressure
- Publication
Turkish Journal of Agriculture & Forestry, 2006, Vol 30, Issue 2, p81
- ISSN
1300-011X
- Publication type
Article