The Appearance of the Impacts of Anthropogeneous Activities in the Water Quality of Dráva and Its Main Domestic Side Currents
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Pécsi Egyetemi Archívum Earth Sciences Doctoral School PH.D. DISSERTATION THESES The Appearance of the Impacts of Anthropogeneous Activities in the Water Quality of Dráva and Its Main Domestic Side-Currents DOLGOSNÉ KOVÁCS ANITA University of Pécs Faculty of Natural Sciences 2008 Pécs Title of doctoral program: Earth Sciences Doctoral School Head: József Tóth Prof Dr. University Teacher, D.Sc. Rector Emeritus PTE TTK Institute of Geography Faculty of Social Geography and Urban Studies Title of doctoral topic group: Environmental Geography Head: Zoltán Wilhelm Dr. University Lecturer, Ph.D. Head of Department PTE TTK Institute of Geography Faculty of General and Applied Environmental Geography Consultant: Prof Dr. István Fodor University Teacher, D.Sc. Scientific Advisor MTA (Hungarian Scientific Academy) Centre of Regional Researches 2 I. INTRODUCTION Water is an essential condition for life as well as a natural resource. Its value is getting higher day by day. The water supply goes through quality renewal during its natural cycle. Water pollution interferes into this cycle and generates changes in the quality of waters which prevent or cease the sustainability of natural vital processes. The increase of the punctual load of our superficial waters was rather quick from the 1950’s to the late 1970’s. Parallel to this, the number and danger of diffuse contamination sources have risen, relating to the anomalous solid and fluid waste management and allocation, the increased use of fertilizers and pesticides, in addition, the different substance storage and haulage.