Article Figures & Data
Figures
- Figure 1.
Trees in yards away from the street can contribute to the visual quality of the view along the street.
- Figure 2.
Neighborhoods with few yard trees may benefit the most from street tree plantings.
Tables
Variable Description Min. Max. Mean SD SSIZE Average size class of street trees 1.0 4.0 2.30 1.28 YSIZE Average size class of yard trees 1.0 3.4 2.36 0.73 SDENS Street tree density (trees per mile) 0.0 410.0 157.01 112.62 YDENS Yard tree density (trees per mile) 25.0 606.7 222.32 116.37 VQUAL Visual quality-scale 76.8 139.2 44.78 51.03 SSIZE YSIZE SDENS YDENS VQUAL SSIZE 1.00 YSIZE 0.666 1.000 SDENS 0.684 0.548 1.000 YDENS 0.024 0.075 0.232 1.000 VQUAL 0.775 0.726 0.648 0.136 1.000 - Table 3.
Regression of visual quality (VQUAL) on size and density of street and yard trees (Multiple R = .818).
Variable Coefficient Significance (p) CONSTANT -14.685 0.305 YDENS -0.150 0.105 YDENS*YSIZE 0.129 0.001 SDENS*SSIZE 0.138 0.000 YSIZE*YDENS*SDENS -0.00038 0.002 Average tree size class Yard tree density (trees per mile) Increase in visual quality 1.5 100 .15036 1.5 200 .09372 1.5 300 .03708 3.5 100 .35084 3.5 200 .21868 3.5 300 .08820
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