The impact of the man-kind to the landscape, in particular his agricultural activities visibly changed the landscape which is expressed in the recent landscape structure. The evaluation of the changes of the secondary landscape structure are currently very popular, it is the object of the research of many authors. The work presented also deals with the changes of this structure in the area of the Special Protection Area Úľanská mokraď wetland during the period of years 1900, 1980, 2010 and was executed with the tools of geographical information system GIS.