The consequences of land-cover changes on soil erosion distribution in Slovakia

Abstract Soil erosion is a complex process determined by mutual interaction of numerous factors. The aim of erosion research at regional scales is a general evaluation of the landscape susceptibility to soil erosion by water, taking into account the main factors influencing this process. One of the key factors influencing the susceptibility of a region to soil erosion is land cover. Natural as well as human-induced changes of landscape may result in both the diminishment and acceleration of soil erosion. Recent studies of land-cover changes indicate that during the last decade more than 4.11% of Slovak territory has changed. The objective of this study is to assess the influence of land-cover and crop rotation changes over the 1990–2000 period on the intensity and spatial pattern of soil erosion in Slovakia. The assessment is based on principles defined in the Universal Soil Loss Equation (USLE) modified for application at regional scale and the use of the CORINE land cover (CLC) databases for 1990 and 2000. The C factor for arable land has been refined using statistical data on the mean crop rotation and the acreage of particular agricultural crops in the districts of Slovakia. The L factor has been calculated using sample areas with parcels identified by LANDSAT TM data. The results indicate that the land-cover and crop rotation changes had a significant influence on soil erosion pattern predominately in the hilly and mountainous parts of Slovakia. The pattern of soil erosion changes exhibits high spatial variation with overall slightly decreased soil erosion risks. These changes are associated with ongoing land ownership changes, changing structure of crops, deforestation and afforestation.

[1]  M. Kirkby,et al.  The development of land quality indicators for soil degradation by water erosion , 2000 .

[2]  Darcy Boellstorff,et al.  Impacts of set-aside policy on the risk of soil erosion in central Spain , 2005 .

[3]  Gerard Govers,et al.  Data quality and model complexity for regional scale soil erosion prediction , 2002, Int. J. Geogr. Inf. Sci..

[4]  Y. Heymann,et al.  CORINE Land Cover. Technical Guide , 1994 .

[5]  W. H. Wischmeier,et al.  A Rainfall Erosion Index for a Universal Soil-Loss Equation , 1959 .

[6]  P. Dijk.  Soil erosion and associated sediment supply to rivers , 2001 .

[7]  Tsehaie Woldai,et al.  Historical land use changes and their impact on sediment fluxes in the Balaton basin (Hungary) , 2005 .

[8]  Tomas Cebecauer,et al.  Inventory of major landscape changes in the Czech Republic, Hungary, Romania and Slovak Republic 1970s – 1990s , 2000 .

[9]  W. H. Wischmeier,et al.  Predicting rainfall erosion losses : a guide to conservation planning , 1978 .

[10]  W. H. Wischmeier,et al.  Rainfall energy and its relationship to soil loss , 1958 .

[11]  Jeroen M. Schoorl,et al.  Linking land use and landscape process modelling: a case study for the Alora region (south Spain) , 2001 .

[12]  Lubos Mitas,et al.  Multivariate Interpolation of Precipitation Using Regularized Spline with Tension , 2002, Trans. GIS.

[13]  K. Oost,et al.  Soil erosion as a driver of land-use change , 2005 .

[14]  Matthias M. Boer,et al.  PAN-EUROPEAN SOIL EROSION RISK ASSESSMENT: , 2004 .

[15]  Markus Neteler,et al.  Open Source GIS: A GRASS GIS Approach , 2007 .

[16]  J. Feranec,et al.  Land cover of Slovakia , 2001 .

[17]  Jaroslav Hofierka,et al.  Modelling Topographic Potential for Erosion and Deposition Using GIS , 1996, Int. J. Geogr. Inf. Sci..

[18]  Veronique Souchere,et al.  Grassland and crop trends: role of the European Union Common Agricultural Policy and consequences for runoff and soil erosion , 2003 .

[19]  Gerard Govers,et al.  The impacts of land use policy on the soil erosion risk: a case study in central Belgium , 2001 .

[20]  P. Julien,et al.  Estimation of upland erosion using GIS , 1998 .

[21]  Billy J. Barfield,et al.  Design Hydrology and Sedimentology for Small Catchments , 1994 .

[22]  Modelling sediment supply to rivers and reservoirs in Eastern Europe during and after the collectivisation period , 2003 .

[23]  Colin A. Booth,et al.  Long-term effects of grass ley set-aside on erosion rates and soil organic matter on sandy soils in east Shropshire, UK , 2006 .

[24]  G. R. Foster,et al.  Predicting soil erosion by water : a guide to conservation planning with the Revised Universal Soil Loss Equation (RUSLE) , 1997 .

[25]  J. Hofierka,et al.  Soil erosion assessment of Slovakia at a regional scale using GIS , 2002 .