Story perspectives
Study Links Green Space to Health in U.S. Cities
10/7/2025
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Story summary
- The study uses the National Land Cover Database (NLCD) to analyze green space in U.S. developed areas.
- NDVI and tree canopy—data from the U.S. Forest Service (USFS)—are primary measures.
- Developed areas are categorized by impervious surface into open space and density.
- Tukey’s test and paired t-tests relate green space to health; demographics come from the American Community Survey.
