Resilience Scanner

Urban Ecosystem Services Modeling for Carbon Drawdown Prioritization

Solution Overview

The City of Boulder is collaborating with University of Colorado researchers to develop an ecosystem services modeling system designed to identify and prioritize urban carbon drawdown opportunities that maximize multiple environmental benefits.[3][5][6] This modeling approach emerged from a multi-year effort by Climate Initiatives and City Planning staff working with a broad consortium of partners to explore strategies for managing urban landscapes to both capture carbon and enhance urban ecosystem services including shade, stormwater infiltration, air quality, and biodiversity.[3] The initiative operates within a context where the city and Boulder County collectively own more than 75,000 acres of open space, including nearly a third of the county's agricultural holdings.[1]

Technical Components

The ecosystem services modeling system represents a technical framework for analyzing and prioritizing nature-based interventions across urban landscapes.[3][5][6] A previous MENV capstone team created a process guide outlining methodologies to identify and model carbon drawdown opportunities in cities, establishing foundational technical protocols for this work.[2] The modeling approach integrates multiple ecosystem service parameters including carbon sequestration capacity, shade provision, stormwater infiltration potential, air quality improvements, and biodiversity enhancement to generate comprehensive assessments of landscape management strategies.[3] The toolkit titled 'Designing Resilient Urban Landscapes: Nature-Based Solutions for Local Governments' provides practical guidance for local governments on using sustainable, ecosystem-driven approaches that are specific to local geography and climate conditions.[7]

Implementation Details

The City of Boulder and the Urban Sustainability Directors Network jointly formed the Urban Drawdown Initiative (UDI) to accelerate the development of carbon drawdown strategies that simultaneously improve the resilience, productivity, and equity-based community development of urban areas.[2] UDI has been working with cities and other leading climate action organizations to build tools and systems that identify opportunities to harness and amplify the abilities of living landscapes in and around cities.[2] The initiative sought three MENV students to be trained in leading-edge practices and tools to identify climate action opportunities for mitigation, adaptation, resilience, and equity in managing urban landscapes and resources.[2] The city and county launched extensive research and field trials of soil-based carbon drawdown, hoping to replicate successful approaches on other public and private lands.[1] This project was funded by the voter-approved Boulder County Sustainability Tax, a 0.125% sales and use tax that runs through the end of 2034.[7] The initiative has since evolved, with Nature-based Climate Initiatives (NCI) – formerly the Urban Drawdown Initiative – now bringing together cities, resource specialists, community-based organizations, scientists, innovators, land managers, and others to accelerate implementation of carbon removal strategies that simultaneously improve the social, economic, and environmental resilience of local communities.[4] By 2025, the city aimed to develop the capability to value and monitor ecosystem services for City of Boulder and broader community activities.[3]

Benefits and Impacts

The modeling system enables prioritization of urban carbon drawdown efforts based on their capacity to maximize multiple ecosystem services benefits simultaneously.[3][5][6] This approach addresses shade provision, stormwater infiltration, air quality improvements, and biodiversity enhancement alongside carbon capture objectives.[3] The extensive research and field trials of soil-based carbon drawdown aim to identify successful approaches that can be replicated across other public and private lands within the region.[1]

Climate Adaptation Relevance

The ecosystem services modeling system directly addresses climate adaptation by prioritizing landscape interventions that enhance urban resilience through multiple pathways including stormwater management, heat mitigation through shade provision, and air quality improvements.[3] The integration of carbon drawdown with ecosystem services creates nature-based solutions that simultaneously address climate mitigation and adaptation objectives across Boulder's extensive public land holdings.[1][3]

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