Affirming Support For The Expansion Of Programs And Projects That Increase Tree Canopy Coverage And Install Shade Trees In Urban Areas To Mitigate The Effects Of Urban Heat Islands Across The State.
SR121 is a Senate Resolution expressing support for expanding programs and projects that increase urban tree canopy coverage and install shade trees to help mitigate urban heat island effects across Hawaii. The resolution describes urban heat islands as areas where pavement, rooftops, and other heat-absorbing surfaces drive higher temperatures, and it links that condition to increased heat exposure and heat-related illness. It emphasizes that children, kupuna, people with preexisting medical conditions, and residents of low-canopy or lower-income neighborhoods are especially vulnerable.
The resolution highlights the public-health and environmental benefits of urban forestry, including cooler surface and ambient temperatures, improved air quality, reduced stormwater runoff, lower energy costs, and better mental and physical health outcomes. It points to existing efforts such as Honolulu’s Urban Tree Plan, the Kaulunani Urban and Community Forestry Program, and the Shade Trees for Schools initiative as examples of successful models. It also notes canopy loss and inequities in canopy access across communities, framing tree planting as both a climate resilience and environmental justice strategy.
As a resolution, SR121 does not change state law or create enforceable duties, but it formally urges state and county agencies to collaborate on urban canopy planning and implementation. It requests assessment of heat island distribution, canopy coverage and loss, priority hot spots, integration with capital improvement, housing, transit-oriented development, and climate resilience planning, as well as coordination with community groups, schools, and the private sector. It also calls for consideration of tree species selection, soil volume, irrigation, maintenance, and statewide canopy standards and targets, and it directs copies to the Governor, BLNR, OPSD, and county mayors.
The overall sentiment around the resolution appears strongly supportive and noncontroversial. The only recorded vote shows the Senate Agriculture and Environment committee passing the measure unanimously, 3-0, and it was passed unamended. The bill’s framing around public health, heat mitigation, and community benefits suggests broad policy appeal.
There is little visible opposition in the available record, but the resolution does raise implementation questions that could become points of discussion. These include how to measure and prioritize heat-vulnerable areas, how to fund and maintain new tree canopy, what standards or targets should apply statewide, and how responsibilities should be shared among state agencies, counties, schools, and private partners. Equity concerns are also implicit, since the resolution emphasizes disparities in canopy access and the need to focus on low-income and low-canopy neighborhoods.