GrüneLunge 2.0 – Transformation towards resilient urban forests

  • Project team:

    Saha, Somidh (Project leader); Iulia Almeida Yakouchenkova, Angela Beckmann-Wübbelt

  • Funding:

    Bundesministerium für Bildung und Forschung (BMBF)

  • Start date:


  • End date:


  • Project partners:

    Forest Research Institute of Baden-Württemberg (FVA), Freiburg; Research Centre Human Biometeorology of the Deutscher Wetterdienst, Freiburg; Institute of Meteorology and Climate Research Atmospheric Environmental Research (IMK-IFU), Campus Alpin, Garmisch-Partenkirchen; City of Karlsruhe (Garden and Forest department); City of Rheinstetten

  • Research group:

    Sylvanus – Increasing resilience and reducing trade-offs during forest transformations

Project description

Trees and urban forests mitigate residents’ heat stress, filter air pollution, and provide multiple other ecosystem services. They are often referred to as the “green lungs” of the city. Especially during the COVID-19 lockdown, urban trees also contribute(d) significantly to the population’s mental health. At the same time, trees in the city are threatened by ongoing climate change and continuous urbanization. Research in the GrüneLunge 1.0 project in recent years has shown that the health of urban trees has deteriorated, especially due to prolonged periods of heat and lack of precipitation. Currently, only about 6% of the trees in Karlsruhe can be assessed as healthy. As a result, many of the above-mentioned services of the forests can no longer be provided and urban trees in our region are threatened in their existence.

In order to counteract the further decline of urban forests and to increase their resilience, the BMBF-funded project GrüneLunge 2.0 aims to translate previous scientific findings into measures. In addition to ITAS, which is the leading partner in this joint project, the cities of Karlsruhe and Rheinstetten are involved as municipal partners. Scientific partners are the Forest Research Institute of Baden-Württemberg (FVA) in Freiburg, the Deutscher Wetterdienst (DWD – Germany’s National Meteorological Service) with its Research Centre Human Biometeorology (ZMMF), also located in Freiburg, and the Institute of Meteorology and Climate Research Atmospheric Environmental Research (IMK-IFU) in Garmisch-Partenkirchen.

Over the next two years, the main goal of GrüneLunge 2.0 will be to implement and consolidate adaptation measures for the future management of urban forests. Based on the data collected in GrüneLunge 1.0, we will set up a geoportal to visualize the current provision of 35 different ecosystem services. In a series of expert interviews and workshops, we will explore the extent to which ecosystem service points can be used in the future management of urban forests. In addition, an ecosystem service model is being validated specifically for the Karlsruhe region to help foresters and horticulturists calculate pollutant removal and heat stress mitigation more accurately at the individual tree level (in collaboration with IMK-IFU). Moreover, an interactive internet portal is being designed together with FVA to select the most suitable tree species for future plantings in urban areas. For the first time in Germany, a heat warning system is being developed that functions at the neighborhood level and considers in particular the needs of vulnerable groups such as children or the elderly (in collaboration with DWD).The shift towards resilient urban forests will not be achieved without citizen involvement. A new citizen forum on street trees will encourage citizens to meet regularly and share their ideas on how to care for urban trees and green spaces. Overall, the project thus aims to improve adaptation planning for future urban forests.


Book Chapters
Arzt, I.; Fricke, A.
Sonnendeck für Eidechsen.
2021. Baden-Württemberg macht einfach - 17 Ideen für eine Welt von morgen, 44, RENN.süd 
Journal Articles
Beckmann-Wübbelt, A.; Fricke, A.; Sebesvari, Z.; Yakouchenkova, I. A.; Fröhlich, K.; Saha, S.
High public appreciation for the cultural ecosystem services of urban and peri‑urban forests during the COVID-19 pandemic.
2021. Sustainable Cities and Society, 74, Art.-Nr.: 103240. doi:10.1016/j.scs.2021.103240
Rogozinski, S.; Saha, S.
The current state of resilience research in urban forestry: a qualitative literature review.
2021. International Journal of Plant and Environment, 7 (1), 1–16. doi:10.18811/ijpen.v7i01.4
Albiez, M.; Fricke, A.; Meyer-Soylu, S.; Seebacher, A.; Trenks, H.
Methodenvernissage: Transformation trifft Forschung – eine Methodenvernissage aus dem Reallabor Quartier Zukunft.
2021. 3. Darmstädter Tage der Transformation (2021), Online, March 15–19, 2021 
Almeida, I.; Fricke, A.; Saha, S.; Fröhlich, K.; Cueva, J.
Wie kann man Ökosystemleistungen von Bäumen messen?.
2021. EFFEKTE im Juni: Von Digitalbauern, Mischwäldern und Nachhaltigkeit (2021), Online, June 15, 2021 
Fricke, A.; Beckmann-Wübbelt, A.; Saha, S.; Almeida, I.
Kulturelle Ökosystemdienstleistungen von Bäumen in Karlsruhe.
2021. EFFEKTE im Juni: Von Digitalbauern, Mischwäldern und Nachhaltigkeit (2021), Online, June 15, 2021 
Parodi, O.
Nachhaltige Entwicklung.
2021. Workshop "Kulturförderung jetzt in Zukunft" (2021), Freiburg, Germany, July 20–21, 2021 
Parodi, O.
Quo vadis Reallabor?.
2021. Fachtagung "Herausforderung Reallabor" (2021), Online, February 18, 2021 
Parodi, O.
Perspektive Reallabor: Grenzenlose Möglichkeiten der urbanen Transformation?.
2021. Difu-WebSeminar "Impulse für die Zukunft : Kreative Methoden und Prozesse in der Stadtentwicklung" (2021), Online, January 28–29, 2021 
Parodi, O.; Wagner, F.
Reallabor Karlsruhe: „Quartier Zukunft“, Karlsruhe und die Zukunftweltstadt.
2021. IQ-Netzwerktreffen (2021), Online, February 25, 2021 
Book Chapters
Goldschmidt, R.; Fricke, A.; Trenks, H.
Praxisbeispiel GrüneLunge : Die Journalmethode.
2020. MONARES : Leitfaden zur Unterstützung bei der Evaluation von Maßnahmen zur Steigerung der Klimaresilienz. Mitarb.: T. Kaiser. Stand: Mai 2020, 27, adelphi 
Goldschmidt, R.; Fricke, A.; Trenks, H.
Praxisbeispiel GrüneLunge : Die Posterbefragung.
2020. MONARES : Leitfaden zur Unterstützung bei der Evaluation von Maßnahmen zur Steigerung der Klimaresilienz. Mitarb.: T. Kaiser. Stand: Mai 2020, 21, adelphi 
Parodi, O.
Das Konzept „Reallabor“ und Einblicke in das „Quartier Zukunft – Labor Stadt“.
2020. Forschungsseminar „The Future of Modernist Housing“ (2020), Karlsruhe, Germany, December 17, 2020 
Parodi, O.
Reallabore: Transfer und Transformation Richtung Nachhaltigkeit.
2020. Trio-Forum: Reallabore - virtuelle Impulsveranstaltung (2020), Online, May 13, 2020 
Journal Articles
Parodi, O.; Seebacher, A.; Albiez, M.; Beecroft, R.; Fricke, A.; Herfs, L.; Meyer-Soylu, S.; Stelzer, V.; Trenks, H.; Wagner, F.; Waitz, C.
Das Format ,,Reallabor“ weiterentwickeln: Best-Practice-Beispiel Karlsruher Transformationszentrum.
2019. Gaia, 28 (3), 322–323. doi:10.14512/gaia.28.3.17Full textFull text of the publication as PDF document
Albiez, M.; Meyer-Soylu, S.; Seebacher, A.; Späthe, J.; Trenks, H.
Klimaschutz mit Herz und Hand: Eine Methoden-Vernissage.
2019. K3 Kongress zu Klimawandel, Kommunikation und Gesellschaft (2019), Karlsruhe, Germany, September 24–25, 2019 
Parodi, O.
Reallabore: Experimetierräume für eine Ökonomie der Nachhaltigkeit.
2019. Auf zu neuen Ufern : Der Beitrag der Wirtschaftswissenschaften zur nachhaltigen Entwicklung (2019), Bern, Switzerland, September 25, 2019 
Parodi, O.
Reallabore als Rahmen tranformativer und transdisziplinärer Forschung.
2019. Tagung “Transformative Wissenschaft” (2019), Würzburg, Germany, September 30, 2019 
Parodi, O.
Konzeptionelle und praktische Erkenntnisse aus dem Reallabor “Quartier Zukunft - Labor Stadt”.
2019. Abschlusstagung des Projekts "DoNaPart" (2019), Dortmund, Germany, October 11, 2019 
Parodi, O.
Impulse für den CoLiving Campus: Das Konzept “Reallabor”.
2019. Workshop “CoLiving Campus” (2019), Brunswick, Germany, November 19, 2019 
Parodi, O.
“Quartier Zukunft - Labor Stadt” - Erfahrungen aus dem Karlsruher Reallabor.
2019. Denksalon (2019), Görlitz, Germany, September 13, 2019 
Parodi, O.
Das Leben in der Stadt von morgen: ... menschlich und nachhaltig?.
2019. Zukunftsforum (2019), Dresden, Germany, May 30, 2019 
Parodi, O.; Seebacher, A.
Real-world Labs - as transdisciplinary and transformative infrastructure.
2019. 3rd Indo-German Dialogue on Green Urban Practices: Co-creation of the Living Environment (2019), Pune, Indien, December 5–7, 2019 


Dr. rer. nat. Somidh Saha
Karlsruhe Institute of Technology (KIT)
Institute for Technology Assessment and Systems Analysis (ITAS)
P.O. Box 3640
76021 Karlsruhe

Tel.: +49 721 608-24644