Green Rx

Trees are integral to our health. People who live near trees report better general health and fewer health complaints.

The Partners

Research Sources and Partners

Tree canopy and urban greening cover data is available for the Sacramento Region by analyzing a using a combination of high resolution aerial imagery and Light Detection And Ranging data, (LIDAR) which is an optical remote sensing technology. The University of Davis and the University of Vermont partnered with the Tree Foundation on this aspect of the project.

The health behavior and outcome data are available through the California Health Interview Survey (CHIS) datasets. CHIS is conducted by the University of California, Los Angeles (UCLA) Center for Health Policy Research in collaboration with the California Department of Public Health, California Department of Health Care Services, and Public Health Institute.

It is the nation's largest state health survey, and the data can be stratified by county, census tract, and zip code. More than 50,000 Californians, including adults, teens, and children, are surveyed by CHIS biennially using a random-dial telephone survey method. The sample, which is drawn from all 58 counties in California, is extensive enough to be statistically representative of California's diverse population.

Urban Design 4 Health of Seattle, Washington provided the research and statistical leadership for the data analysis.

This research was funded by grants from the USDA Forest Service and the California Department of Forestry and Fire Protection.