Steady infiltration rates estimated for Modrava2 catchment based on the distribution of plant species

Transcription

1 Steady infiltration rates estimated for Modrava2 catchment based on the distribution of plant species Map collection Lukáš Jačka, Jirka Pavlásek, and Pavel Pech Czech University of Life Sciences Prague Faculty of Environmental Sciences Department of Water Resources and Environmental Modelling 2012

2 Annotation In this collection of maps, we depict an estimation of the infiltration characteristics of a small mountain forest catchment Modrava 2 located in the central part of the Šumava National Park. Infiltration experiments were made at the location of various vegetation covers. Measured steady infiltration rate values were extrapolated on the basis of the dominant plant species distribution in the catchment. We determined which plant species are dominant, and infiltration tests were carried out where these species were located in selected sites in the catchment. The characteristic steady infiltration rates were averaged for each dominant vegetation species. The percentages of dominant plant species were determined for established points placed in a regular square grid of 115 mapping points throughout the basin. The points were 50 m apart. There were a total of 67 points inside the catchment area. The rest of the points were located near to the catchment border. An extrapolation of the directly measured infiltration values to these established points was calculated using (1) percentages of the dominant plant species determined at these points, and (2) characteristic infiltration rates averaged for these species. A vector infiltration map was created from the infiltration values calculated for the established points. Raster infiltration maps with detailed spatial information were created from the infiltration values calculated for the established points, using selected interpolation techniques. Five map sheets are presented in this collection. First map shows location of the catchment and a basic local geography. This map was created using MicroStationV8 XM. Next four infiltration maps created using software ESRI ArcGis Desktop 9.3 depict infiltration data from hydrologically important area of mountain podzols, which are dominant in the Modrava 2 catchment. These infiltration maps are key input for physically based hydrological modeling of rainfall-runoff process. Authors: Lukáš Jačka, Jirka Pavlásek, and Pavel Pech Czech University of Life Sciences Prague Faculty of Environmental Sciences Department of Water Resources and Environmental Modeling Kamýcká 129, Praha 6 Suchdol jacka@fzp.czu.cz, pavlasek@fzp.czu.cz, pech@fzp.czu.cz Publication year of map collection: 2012

3 Location of the Modrava 2 experimental catchment on the map of Central Europe and location of the measurement sites in the catchment

4 Squares with the infiltration values of points inside of them

5 Inverse distance weighting interpolation of the infiltration data measured at the mapping points

6 Spline interpolation of the infiltration data measured at the mapping points

7 Ordinary kriging interpolation of the infiltration data measured at the mapping points