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TemaNord 2025:520
YGGDRASIL
The Living Nordic City
Implementing nature-based solutions
through the 3+30+300 principle
EN
SE
NO
YGGDRASIL – THE LIVING NORDIC CITY
About this publication
PDF
Foreword
Summaries
1. Introduction
Introduction to Yggdrasil – The Living Nordic City
Goals and objectives
Challenges
Participating cities
Approach and methodology
2. The 3+30+300 principle – from concept to Nordic implementation
Introduction of the ‘t(h)rees principle’
Use of the 3+30+300 principle to date
Urban Forest Strategies and Master Plans – creating a strategy to reach the 3+30+300 principle
Focus on the quality of green spaces and trees
Opportunities and challenges with implementing 3+30+300
3+30+300 implementation in a Nordic setting – policies, practices, and opportunities
Making the health connection
Tree species diversity and 3+30+300 implementation
3. GIS-analysis of 3+30+300 status in Nordic cities
Methodology
Nordic Cities current adherence to the 3+30+300 principle
Gap analysis to pinpoint areas with less than 30% canopy cover
Socioeconomic perspectives on urban trees
Nordic dimensions of socioeconomic vulnerability and access to green space and trees
Comparison of tree cover data with climate-related parameters
Trees under future climate change scenarios – an analysis
4. Mapping of tree species diversity in Nordic cities
Species diversity in Nordic cities
Tree species distribution in the partnering cities
Distribution of tree species planted in Sweden in 2023
Exploration of impacts on climate adaptation, including biodiversity
5. Conclusions and recommendations
Overall project results
Recommendations
Key messages
Executive summary
Sammanfattning på svenska
Sammendrag på norsk
Yhteenveto suomeksi
Samantekt á íslensku
References
Appendix