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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue May 2008, 29 (3)                                     Back

Impacts of land use conversion on soil properties and soil erodibility

Selma Yasar Korkanc*1, Necdet Ozyuvaci2 and Ahmet Hizal2

1Department of Watershed Management, Bartin Faculty of Forestry, Zonguldak Karaelmas University,74100, Bartin, Turkey

2Department of Watershed Management, Faculty of Forestry, Istanbul University,34473, Bahcekoy, Istanbul, Turkey

(Received: June 14, 2006; Revised received: January 25, 2007; Accepted: March 03, 2007)

Abstract: Land use conversion can affect natural ecological processes such as surface runoff and erosion. Therefore, ithas potential to change soil stability. To investigate this process in depth, Iskalan creek catchment in the Black sea region, where excessive land use applications and erosion events have often occured, was selected as the study area. The objective was to determine the effects of land use conversion on soil properties, soil erodibility and the relationships among soil properties and some erodibility indices. Duplicate topsoil samples were taken by using steel cylinders at 100 different sampling points from three different land use types; 34 of them are in farmlands, 34 in rangelands and 32 in forestlands. Soil particle size distribution, loss of ignition, pH, electrical conductivity, skeleton percentage and three erodibility indices were determined. Data were analysed by using Pearson correlation analysis (at 95% and 99% significance level), ANOVA and Tukeyís test at 95 % significance level. According to study results, land use conversion affects some properties of soils significantly. Loss of ignition of soils in forests was significantly higher than soils in farmlands and rangelands. Soil skeleton percentage in rangelands and farmlands were significantly different. The study results showed that there was significant difference between pH of soils in forests and farmlands (p< 0.05). Pearson correlation analysis results showed significant correlations among erodibility indices and certain soil properties such as clay and sand fraction of soils (p< 0.05 and p< 0.01).Topsoils of the study area were sensitive to erosion according to all three erodibility indices. The most sensitive soils were in farmlands.

Key words: Land use conversion, Soil physical properties, Erodibility

PDF of full length paper is available with author (


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