The tree cover and temperature disparity in US urbanized areas: Quantifying the association with income across 5,723 communities
Fig 2
Tree cover as a function of income.
We classified census blocks based upon the income distribution within its urbanized area, calculating the percentile of the income distribution that block has. For ease of display, blocks were grouped into income categories (0–5%, 5–10%, etc.) and the population-weighted median tree cover (%) across the entire study area calculated. This paper focuses most of its analysis on the lowest quartile (red squares) and highest quartile (green triangles) of income.