EGU21-5744, updated on 04 Mar 2021
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Nordic Bioeconomic Pathways - catchment scale water quality impacts of various scenarios and projections 

Joy Bhattacharjee1, Hannu Marttila1, Artti Juutinen2, Anne Tolvanen2, Arto Haara3, Jouni Karhu2, and Björn Klöve1
Joy Bhattacharjee et al.
  • 1University of Oulu, Water, Energy and Environmental Engineering Research Unit, Oulu, Finland
  • 2Natural Resources Institute Finland (LUKE), Oulu, Finland
  • 3Natural Resources Institute Finland (LUKE), Joensuu, Finland (

The development, the alternative pathways for use of bioresources, can lead to plausible stressors in the future on forestry dominated catchments. It is needed to analyse the impact of regional future projections on different land system management (LSM) attributes. The catchment scale projections are downscaled from Nordic Bioeconomic Pathways (NBPs), the subsets of Shared Socioeconomic Pathways (SSPs). As a case study, the Simojoki catchment (3160 km2) in northern Finland has been considered where drained peatlands and forests dominate (53%) in the catchment. We integrated stakeholder-driven input, Finnish forest inventory model pathways (MELA) and hydrological catchment model (SWAT) to explore the future consequences of forest management practices for different NBP scenarios. We calibrated and validated water quality parameters in SWAT for the Simojoki catchment. Then, based on the output of MELA model of LSM attributes including stand management, catchment management strategy and fertilizer use, we used NBP scenario projections in SWAT model. We also included stakeholders’ evaluations of biomass removal at the time of harvesting at the Simojoki catchment. Additionally, climate imposing emission scenarios have been integrated into SWAT model to analyse longer perception of climate change (CC). The final outcomes of the proposed scenarios (NBP and/or CC) will portray the probable impacts on each LSM attribute in the Simojoki catchment, to adapt to the future forest management consequences.

How to cite: Bhattacharjee, J., Marttila, H., Juutinen, A., Tolvanen, A., Haara, A., Karhu, J., and Klöve, B.: Nordic Bioeconomic Pathways - catchment scale water quality impacts of various scenarios and projections , EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-5744,, 2021.

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