Table 8.

DBH size class distributions of Norway maple (Acer platanoides) and London planetree (Platanus × acerifolia) from 1987 to 2019.

Norway maple1987199620062013201
0-15.2 cm28.53%6.57%3.57%0.84%0.79%
15.2-30.5 cm35.47%39.00%29.64%14.73%12.46%
30.5-45.7 cm18.11%33.76%40.48%44.78%40.14%
45.7-61.0 cm11.11%14.10%18.93%28.45%34.25%
61.0-76.2 cm4.17%5.06%5.54%8.84%10.11%
76.2-91.4 cm1.66%1.15%1.43%1.68%1.47%
91.4-106.7 cm0.85%0.36%0.42%0.51%0.39%
> 106.7 cm0.11%0.00%0.00%0.17%0.39%
London planetree19871996200620132019
0-15.2 cm3.17%53.87%49.36%15.34%18.69%
15.2-30.5 cm31.75%2.95%10.58%35.78%26.79%
30.5-45.7 cm23.81%12.18%9.62%14.38%18.07%
45.7-61.0 cm13.49%11.81%9.29%7.99%9.35%
61.0-76.2 cm11.90%7.38%8.97%8.31%6.85%
76.2-91.4 cm7.94%4.80%5.13%8.95%10.90%
91.4-106.7 cm4.76%5.17%4.81%4.47%3.43%
> 106.7 cm3.17%1.85%2.24%4.79%5.92%