Table 5.

Diversity statistics for tree species and genera from 1902 to 2019.

Street tree species19021928–194719871996200620132019
Number of species48NA80137152180185
Number of trees5621NA53037361842382558194
Simpson_SDI0.24NA0.180.070.060.040.04
Shannon-Wiener_H1.83NA2.393.513.693.994.04
Evenness0.13NA0.140.240.260.300.31
Inverse SDI4.09NA5.6113.3616.0524.3327.15
eH6.26NA10.9433.3139.9253.8956.88
Street tree genera19021928–194719871996200620132019
Number of genera29274560596465
Number of trees5621519553037361842382558194
Simpson_SDI0.310.360.470.220.190.120.11
Shannon-Wiener_H1.511.461.502.512.632.902.97
Evenness0.160.160.100.200.230.280.30
Inverse SDI3.272.792.144.615.248.079.40
eH4.544.294.5012.2613.8618.0819.57
Park tree species19021928–194719871996200620132019
Number of speciesNANANA114119140142
Number of treesNANANA2498260524402701
Simpson_SDINANANA0.040.040.030.03
Shannon-Wiener_HNANANA3.793.844.084.08
EvennessNANANA0.390.390.420.42
Inverse SDINANANA26.1227.1337.1637.08
eHNANANA44.1746.4358.8559.26
Park tree genera19021928–194719871996200620132019
Number of generaNANANA56565659
Number of treesNANANA2498260524402701
Simpson_SDINANANA0.070.070.060.06
Shannon-Wiener_HNANANA3.023.053.193.24
EvennessNANANA0.370.380.430.43
Inverse SDINANANA13.7814.1216.6417.38
eHNANANA20.5321.0324.1725.64