WYBÓR WARIANTU RENATURALIZACJJ OBSZARÓW PODMOKŁYCH W KAMPINOSKIM PARKU NARODOWYM NA PODSTAWIE HYDRODYNAMICZNYCH BADAŃ MODELOWYCH

Abstract

VARIANT SELECTION OF WETLAND AREAS RESTORATION IN THE KAMPINOS NATIONAL PARK BASED ON HYDRODYNAMIC MODELLING RESEARCHAbstract Modelling research was conducted in the hydrogeoiogical valley unit, where the Kampinos National Park (KNP) is situated.bThe aim of the calculations was to provide a prognosis for the evaluation of proposed restoration variants of the wetland areas located invthe KNP. Implementation of the research task required simulation of threats connected with the present hydrographic net transformation. The analysis of particular variants of hydrographic net transformation revealed that the most effective, in terms of groundwater level increase, would be complete elimination of the melioration eel, whose base element is the Łasica Canal. The calculation results indicate that the change of hydrodynarrtie state, as a result of change in the Łasica Canal course, will be less significant than its total elimination. In the first period, after restoration of the meander character of the riverbed, an undesirable groundwater level decrease can appear as a result of decrease in riverbed resistance. As the riverbed colmatage increases in time, the groundwater table levels wilt be rebuilt or even will locally exceed the present slates.