Search Results

You are looking at 1 - 2 of 2 items for

  • Author: Jana Kozlovsky Dufková x
Clear All Modify Search
Open access

Lenka Lackóová and Jana Kozlovsky Dufková

Abstract

In this paper we compare the Digital terrain model (DTM) created from contours extracted from the Base Map of Slovakia with the scale of 1 : 10000 from year 1970 and DTM derived from the points measured with the Trimble® R8 GPS receiver with TSC2 data loggers from 2013. The purpose of the provision of these DMTs is to create baseline information that we used in quantifying physical changes due to wind erosion processes in the terrain of selected field in 43 years, since 1970 to present 2013. The comparison of the DTMs was validated by the volumetric method during wind erosion event. The results achieved from the volumetric method show that in one erosion event, about 480 m3 of soil has been eroded and transported to another location. In DTM comparison (43 years) volume amount which was calculated by “3D analyst tool - terrain and TIN surface - Surface difference”, 31,228 m3 of eroded soil was accumulated in the area and 16,236 m3 was lost from the area. Totally 14,922 m3 (5.5 cm height across the whole field) was transported from outlying eroded fields.

Open access

Tomáš Mašíček, Jana Kozlovsky Dufková and Tomáš Zámečník

Abstract

Evaluation of the vulnerability of agricultural land by water erosion, including the erosion control measures design, was done using the geographic information systems (GIS) on example of the cadastral area Rovečné, the Czech Republic. Analytical operations that lead to evaluation of the basic runoff and especially erosion rates according to the Universal Soil Loss Equation (USLE) were made in ArcGIS 10 Desktop, the software product ArcInfo using a set of integrated software applications ArcMap, ArcCatalog and user interface ArcToolbox, and also using programs LS-converter and USLE2D. The potential loss of soil by water erosion was determined before and after erosion control measures design. The proposed measures should improve the current situation and contribute to preservation of agricultural activity in this area in a form close to the current situation.