METHODS FOR EVALUATION OF THE EFFECT OF DIFFERENT LAND COVER ON THE RUNOFF PROCESS IN HEADWATER AREAS
Abstract
This paper represents partial results of experimental research, performed by Department of Physical Geography and Geoecology, Faculty of Science, Charles University in Prague. Research area was found in may 2006 and it is created by two paired catchments of Zbytinský brook and Tetřívčí brook in headwater area of the Blanice river in Bohemian Forest.
Land cover of both catchments differ, in catchment of Zbytinský brook predominates forest, on the other hand in catchment of Tetřívčí brook are cultural meadows and pastures. Our principal aim is to observe differences in runoff response of both hydrological systems, resulted from human management and changes in region.
For this purpose was choosen a set of 28 rainfall-runoff events, in which we analized in detail hyetograph and hydrograph. Independent (causal) and dependent variables of chosen events entered the principal component analysis and cluster analysis, that determined a number of types of causal conditions which in both catchments provoke more pronounced runoff response.
By comparing the characters of the hydrograph were found differences in behaviour of both experimental catchments in rising limb phase.