Table 6.
Mean diversity indices for younger trees (dbh 0–15.2 cm) and all street trees in Massachusetts.
Trees dbh 0–15.2 cm
All trees
Simpson (SDI)
0.0804
0.1269
Shannon-Wiener
3.0905
2.8964
Evenness
0.4469
0.2418
Inverse SDI
15.7502
11.2599