Human Impact on Water Circulation Patterns in Raised Bogs of the Baltic Type, Northern Poland

Raised bogs of the Baltic type are unique because their geomorphologic structure and hydrologic conditions. There about 80 this in Poland. All affected by human impact, water circulation patterns disrupted artificial outflows. The aim study was to show effects impact on raised bog an example Wielkie Bagno peat bog. main work consisted field studies, during which measurements groundwater fluctuations, flows at outflows, hydrographic mapping were performed. Data precipitation evaporation also obtained from state institutions. Research has shown that fluctuations levels average 78 cm per year (hydrological years 2018–2019) is poor condition. This mainly due climate change, manifests itself too little summer increase evaporation, a dense drainage network causing lowering level bog, close proximity mine significant examined as well large individual months. In some areas, near-surface layer detected, 30 thick, sign desiccation (especially summer). Water balance data used quantity available determined atmospheric precipitation, small warm period. As consequence, there months with negative climatic balance. It observed factors such physical location different parts degree degradation affect area. At moment, most important task raise level, reduce its pressure