Wetland planning in agricultural landscape using Geographical Information System: A case study of Lake Ringsjön basin in South Sweden
Independent thesis Advanced level (degree of Magister)Student thesis
The problem of increasing eutrophication encouraged the Baltic States to implement new measures, which would help to decrease the nutrient load into the Baltic Sea. Constructed wetlands are considered as one of the possible solutions to the problem of nutrient leakage from agricultural areas in Sweden.
The aim of this study was to identify the best wetland locations in the Lake Ringsjön basin (in southern Sweden, Scania) using Land Score System (LSS) based on Geographic Information System (GIS). The required area of wetland was calculated on the base of average daily discharge in the whole basin. Next, the possible wetland sites were compared with the location of major nitrogen leakage sources (municipalities, and agriculture). The scenario, which came out from the implemented model (the wetland area required for each sub basin in the Lake Ringsjön basin), was compared to the two scenarios investigated by Swedish Meteorological and Hydrological Institute (SMHI), where wetlands covered 0,4 and 2% of the total cropland area in the Lake Ringsjön basin.
The result shows that the second SMHI’s scenario relates in some sub basins to the required wetland area calculated in my model. However, in some cases the wetland area seems to be underestimated.
Place, publisher, year, edition, pages
Tema vatten i natur och samhälle , 2005.
wetlands, Land Score System, Geographical Information System, agriculture, nitrogen, Sweden
Oceanography, Hydrology, Water Resources
IdentifiersURN: urn:nbn:se:liu:diva-3192ISRN: LIU-TEMAV/MPWLS-D--04/005--SEOAI: oai:DiVA.org:liu-3192DiVA: diva2:20353