Towards an Explicit Understanding of Network Governance in Urban Forestry Management: A Case Study of Portland (OR), USA

Quadri Olatunbosun Taiwo () and Vivek Shandas
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Quadri Olatunbosun Taiwo: Department of Geography, Portland State University, Portland, OR 97201-0751, USA
Vivek Shandas: Department of Geography, Portland State University, Portland, OR 97201-0751, USA

Sustainability, 2025, vol. 17, issue 9, 1-23

Abstract: As the climate continues to warm, and municipal leaders look for cost-effective and timely approaches to urban sustainability, one increasingly sought-out approach is the use of tree canopy to cool neighborhoods. Despite widespread efforts to expand tree canopy in cities, an overwhelming body of evidence suggests that urban green space is declining across the U.S., yet little is known about the factors that propel these changes. Understanding the institutional and governance systems can help identify the opportunities for slow consistent declines. Using social network analysis (SNA) metrics, we examined stakeholder roles in power structures and decision-making processes within Portland, Oregon’s urban forest management. Our results reveal a highly decentralized urban forestry network (density = 0.0079), with weak cohesion (5.4%) among 162 stakeholders. Moving forward, while network governance may face obstacles from conflicting interests among community and interagency groups, transforming governance models at all levels will require developing periodic, collaborative urban forestry management plans to address nature-based planning challenges. These planning documents should strongly emphasize not only the prioritization of tree equity-related ordinances but also the optimization of eco-literacy and awareness through virtual reality (VR) technology. As a novel approach, immersive simulations demonstrate practical potential for showcasing urban forestry benefits in network governance outreach and consensus-building.

Keywords: urban tree canopy; governance structures; social network analysis; degree centrality; climate change; stakeholders; Portland city (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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