Soil erosion in river basins of Georgia
- Authors: Gogichaishvili G.P.1
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Affiliations:
- Department of Hydrology
- Issue: Vol 49, No 6 (2016)
- Pages: 696-704
- Section: Soil Erosion
- URL: https://journals.rcsi.science/1064-2293/article/view/223415
- DOI: https://doi.org/10.1134/S1064229316040049
- ID: 223415
Cite item
Abstract
The area of cultivated lands in western and eastern Georgia comprises 28–40 and 29–33% of the total catchment areas, respectively. Eroded arable soils in Georgia occupy 205700 ha, i.e. 30.5% of the total plowland area, including 110500 ha (16.4%) of slightly eroded soils, 74400 ha (11%) of moderately eroded soils, and 20800 ha (3.1%) of strongly eroded soils. The maximum denudation rate in catchments of western Georgia reaches 1.0 mm/yr. The minimum denudation (0.01 mm/yr.) is typical of river catchments in southern Georgia. The mean annual soil loss from plowed fields in western Georgia reaches 17.4 t/ha and exceeds the soil loss tolerance by nearly four times. In eastern Georgia, it is equal to 10.46 t/ha and exceeds the soil loss tolerance by 2.5 times. In southern Georgia, the mean annual soil loss from plowed fields is as low as 3.08 t per ha, i.e., much lower than the soil loss tolerance.
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About the authors
G. P. Gogichaishvili
Department of Hydrology
Author for correspondence.
Email: ggizo@hotmail.com
Georgia, pr. D. Agmashenebeli 150, Tbilisi, 0112