ReviewThe Science of the total environment2024
Measuring the 3-30-300 rule to help cities meet nature access thresholds.
Review in The Science of the total environment, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
19 citing papers in PubMed.
- Invited Perspective: How Do Green- and Bluespaces Reduce Heat-Related Health Risks? Gaining New Insights from Street-View Imagery, Deep Learning Models, and Smartphone Data.Environmental health perspectives · 2026Review
- Urban greenspace and dementia: Measures, mechanisms, and methodological guidance.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Review
- Residential tree canopy and allostatic load in US adults: a population-based cross-sectional study.Lancet regional health. Americas · 2026Article
- Assessing European cities with the 3-30-300 rule underscores the need for enhanced urban greening efforts.Nature communications · 2026Article
- Expert perspectives on exposure-response functions for urban health policy: Lessons from a UBDPolicy workshop.Environmental research · 2026Review
- More trees, more naturalness, and greater willingness to engage in physical activity: an image-based study.Frontiers in public health · 2026Article
- A novel approach for mapping exposure to land cover at the small statistical geography level.International journal of health geographics · 2025Article
- Modeling environmental noise pollution around the 1893 educational institutions for children in Tehran to support new urban design strategies.Scientific reports · 2025Article
- Exploring the role of green space in mitigating childhood opportunity across the U.S.Scientific reports · 2025Article
- GPS-based street-view greenspace exposure and wearable assessed physical activity in a prospective cohort of US women.The international journal of behavioral nutrition and physical activity · 2025Article
- Associations of street-view greenspace exposure with cardiovascular health (Life's Essential 8) among women in midlife.Biology of sex differences · 2025Article
- Greenspace and depression incidence in the US-based nationwide Nurses' Health Study II: A deep learning analysis of street-view imagery.Environment international · 2025Article
- Pre-Planting and Planting Factors and Practices Affecting Urban Tree Growth: With a Special Focus on the Root System and Its Condition-A Review.Plants (Basel, Switzerland) · 2025Review
- Assessing greenspace and cardiovascular health through deep-learning analysis of street-view imagery in a cohort of US children.Environmental research · 2025Article
- Smartphone GPS-Based Exposure to Greenspace and Walkability and Accelerometer-Assessed Physical Activity During Pregnancy and Early Postpartum-Evidence from the MADRES Cohort.Journal of urban health : bulletin of the New York Academy of Medicine · 2024Article
- Acute canopy deficits in global cities exposed by the 3-30-300 benchmark for urban nature.Nature communications · 2024Article
- Large disagreements in estimates of urban land across scales and their implications.Nature communications · 2024Article
- Measuring Environmental and Behavioral Drivers of Chronic Diseases Using Smartphone-Based Digital Phenotyping: Intensive Longitudinal Observational mHealth Substudy Embedded in 2 Prospective Cohorts of Adults.JMIR public health and surveillance · 2024Observational
- Quantifying Nature: Introducing NatureScoreAmerican journal of health promotion : AJHP · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
25 authors.
Funding
Abstract
The 3-30-300 rule offers benchmarks for cities to promote equitable nature access. It dictates that individuals should see three trees from their dwelling, have 30 % tree canopy in their neighborhood, and live within 300 m of a high-quality green space. Implementing this demands thorough measurement, monitoring, and evaluation methods, yet little guidance is currently available to pursue these actions. To overcome this gap, we employed an expert-based consensus approach to review the available ways to measure 3-30-300 as well as each measure's strengths and weaknesses. We described seven relevant data and processes: vegetation indices, street level analyses, tree inventories, questionnaires, window view analyses, land cover maps, and green space maps. Based on the reviewed strengths and weaknesses of each measure, we presented a suitability matrix to link recommended measures with each component of the rule. These recommendations included surveys and window-view analyses for the '3 component', high-resolution land cover maps for the '30 component', and green space maps with network analyses for the '300 component'. These methods, responsive to local situations and resources, not only implement the 3-30-300 rule but foster broader dialogue on local desires and requirements. Consequently, these techniques can guide strategic investments in urban greening for health, equity, biodiversity, and climate adaptation.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.