Table 6.

Diversity index t-test (Hutcheson 1970) for tree species and genera.

Street tree species19021928–194719871996200620132019
Shannon-Wiener_H1.8343NA2.39243.50573.68733.98724.0414
Variance0.000301NA0.0004570.0003380.0002860.0002510.000240
t:NANA−20.267−39.482−7.2704−12.941−2.447
df:NANA1035511513154281663116443
p(same):NANA1.35E-897.533E-3203.76E-134.03E-380.014416
Street tree genera19021928–194719871996200620132019
Shannon-Wiener_H1.51341.47341.50272.50622.62892.89522.9735
Variance0.0002350.0003710.0005760.0003990.0003300.0002600.000236
t:NA1.623−0.95038−32.135−4.5399−10.964−3.5174
df:NA101121007211293153811647816419
p(same):NA0.104620.341946.95E-2175.67E-067.12E-280.000437
Park tree species19021928–194719871996200620132019
Shannon-Wiener_HNANANA3.78843.8384.07514.0816
VarianceNANANA0.0005720.0005530.0005440.000483
t:NANANANA−1.4777−7.158−0.2014
df:NANANANA5095.950425079.3
p(same):NANANANA0.139549.36E-130.84039
Park tree genera19021928–194719871996200620132019
Shannon-Wiener_HNANANA3.02223.04573.18523.2442
VarianceNANANA0.0005000.0004740.0004530.000406
t:NANANANA−0.75214−4.5846−2.0117
df:NANANANA5091.15044.45084.1
p(same):NANANANA0.4524.66E-060.044309