Article Figures & Data
Figures
- Figure 1.
Panel A shows an excavated and reassembled root system in the warehouse photography studio. Black and white targets were used to assist in the photogrammetry stitching process and to establish scale. A camera on a rolling tripod mount was moved to each tape line to capture imagery from above, below, and at root level. Panel B shows a 3D rendering of a similar root system. This scale model was used to measure root volume.
- Figure 2.
Bending stress loss (%) across trenching treatments. Thirty Acer rubrum L. trees were randomly assigned to one of three trenching treatments: trenching at a distance of 1× tree’s diameter at breast height (DBH), 3× DBH, and 5× DBH away from the base of the trunk. Trees were pulled to 1° in the direction opposite the trenching damage. Error bars depict 95% confidence intervals.
- Figure 3.
Root volume loss (%) across trenching treatments. Thirty Acer rubrum L. trees were randomly assigned to one of three trenching treatments: trenching at a distance of 1× tree’s diameter at breast height (DBH), 3× DBH, and 5× DBH away from the base of the trunk. The trees were excavated using a 2.4-m (96-inch) diameter tree spade, cleaned with an air excavator, and then the volumes of both the main and severed roots were calculated (in cm3) using photogrammetry. Error bars depict 95% confidence intervals.
- Figure 4.
Relationship between bending stress loss (%) and root volume loss (%). Y = 19.68 + 2.072X. Model r 2 = 0.5466. Dashed lines depict 95% confidence intervals.
- Figure 5.
Relationship between root volume and diameter at breast height (DBH). Y = –0.0301 + 0.0059X. Model r 2 = 0.7524. Dashed lines depict 95% confidence intervals.
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