Table 6.

Summary of mean tree height (m), crown radius (m), and canopy volume (m3) for aged-out trees and replacement trees per size class for each scenario. “Aged-out trees” refers to trees removed between baseline and future scenarios. “Replacement trees” are new trees provided to future scenarios in place of aged-out trees. The percent change (%) between aged-out and replacement trees’ measures was also calculated: ([Aged-outReplacement] ÷ |Aged-out|) × 100%.

MeasureScenarioSize classAged-out trees meanReplacement trees meanPercent change
Tree height (m)S1 2050: Existing policyLarge16.119.1+19%
Medium9.238.20−11%
Small6.464.29−34%
S2 2050: Existing policy + CA treesLarge16.013.8−14%
Medium9.248.99−3%
Small6.605.39−18%
S3 2050: Target building shadingLarge16.013.8−14%
Medium9.248.99−3%
Small6.605.39−18%
S4 2050: Maximize tree canopyLarge14.216.0+13%
Medium8.979.24+3%
Small6.825.43−26%
Crown radius (m)S1 2050: Existing policyLarge5.204.88−6%
Medium2.882.74−5%
Small2.041.43−30%
S2 2050: Existing policy + CA treesLarge5.154.62−10%
Medium2.893.00+4%
Small2.081.79−14%
S3 2050: Target building shadingLarge5.154.62−10%
Medium2.893.00+4%
Small2.081.79−14%
S4 2050: Maximize tree canopyLarge5.184.74−8%
Medium2.902.99+3%
Small2.161.80−17%
Canopy volume (m3)S1 2050: Existing policyLarge670.00554.00−17%
Medium57.8050.10−13%
Small30.606.72−78%
S2 2050: Existing policy + CA treesLarge671.00307.00−54%
Medium59.0072.40+23%
Small33.2013.20−60%
S3 2050: Target building shadingLarge671.00307.00−54%
Medium59.0072.40−23%
Small33.2013.20−60%
S4 2050: Maximize tree canopyLarge706.00326.00−54%
Medium60.2070.60+17%
Small37.2013.50−64%