Impact of wetland restoration on river discharge - A case study of Bråån, Skåne, Sweden
(2023) In Student thesis series INES NGEK01 20231Dept of Physical Geography and Ecosystem Science
- Abstract (Swedish)
- Land use change is a factor not often considered when modeling river discharge in regard to
future flood risk. The restoration of wetlands is an ongoing land use change which affects water
storage capacity in the soils of a catchment and could lead to lower flows in rivers. This study
analysed the effect of an increased wetland area on river discharge in the Bråån catchment in
Skåne, Sweden. Discharge was modeled with the HYPE model, developed by the Swedish
Meteorological and Hydrological Institute (SMHI). Input data included land use and soil type
data, which are classified into soil-land use classes, as well as climate, discharge and elevation
data. Wetlands were modeled as constructed internal wetlands with water... (More) - Land use change is a factor not often considered when modeling river discharge in regard to
future flood risk. The restoration of wetlands is an ongoing land use change which affects water
storage capacity in the soils of a catchment and could lead to lower flows in rivers. This study
analysed the effect of an increased wetland area on river discharge in the Bråån catchment in
Skåne, Sweden. Discharge was modeled with the HYPE model, developed by the Swedish
Meteorological and Hydrological Institute (SMHI). Input data included land use and soil type
data, which are classified into soil-land use classes, as well as climate, discharge and elevation
data. Wetlands were modeled as constructed internal wetlands with water regulation capability.
A GIS-analysis for future potential wetland areas from The County Administrative Board of
Skåne (Länsstyrelsen Skåne) served as the base for a realistic wetland increase scenario. River
discharge decreased by 2% with the realistic increase. The main reasons for the reduction of
discharge are the increase in peat soils and higher evaporation. However, soil and land use
parameter values could be improved, and a more complex incorporation of HYPE’s routines
could be done to achieve a better model fit. The small reduction in discharge implicates that
land use change in form of more wetlands does have an effect on river flow. This should be
considered in e.g. future flood mapping and hydrological modeling. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9126505
- author
- Luda, Ardis LU
- supervisor
- organization
- course
- NGEK01 20231
- year
- 2023
- type
- M2 - Bachelor Degree
- subject
- keywords
- wetlands, wetland restoration, HYPE model, river discharge, Sweden, land use change, flooding, hydrological modeling
- publication/series
- Student thesis series INES
- report number
- 599
- language
- English
- id
- 9126505
- date added to LUP
- 2023-06-21 09:35:19
- date last changed
- 2023-06-21 09:35:19
@misc{9126505, abstract = {{Land use change is a factor not often considered when modeling river discharge in regard to future flood risk. The restoration of wetlands is an ongoing land use change which affects water storage capacity in the soils of a catchment and could lead to lower flows in rivers. This study analysed the effect of an increased wetland area on river discharge in the Bråån catchment in Skåne, Sweden. Discharge was modeled with the HYPE model, developed by the Swedish Meteorological and Hydrological Institute (SMHI). Input data included land use and soil type data, which are classified into soil-land use classes, as well as climate, discharge and elevation data. Wetlands were modeled as constructed internal wetlands with water regulation capability. A GIS-analysis for future potential wetland areas from The County Administrative Board of Skåne (Länsstyrelsen Skåne) served as the base for a realistic wetland increase scenario. River discharge decreased by 2% with the realistic increase. The main reasons for the reduction of discharge are the increase in peat soils and higher evaporation. However, soil and land use parameter values could be improved, and a more complex incorporation of HYPE’s routines could be done to achieve a better model fit. The small reduction in discharge implicates that land use change in form of more wetlands does have an effect on river flow. This should be considered in e.g. future flood mapping and hydrological modeling.}}, author = {{Luda, Ardis}}, language = {{eng}}, note = {{Student Paper}}, series = {{Student thesis series INES}}, title = {{Impact of wetland restoration on river discharge - A case study of Bråån, Skåne, Sweden}}, year = {{2023}}, }