Table 2.

Sample size, estimated regression coefficients, and mean standard error (MSE) values for predicting dbh from age, or tree height, crown diameter, or crown height from dbh, along with adjusted coefficients of determination for the modeling data set. Height, crown diameter, crown height, or dbh can be predicted by , where = the tree parameter to be estimated, EXP-the inverse of the natural logarithm, and x_i = age or dbh.

Species	Common name	n	Dbh vs. Age				Height vs. dbh				Crown diameter vs. dbh				Crown height vs. dbh
Species	Common name	n	Â	b	MSE	R²	Â	b	MSE	R²	Â	b	MSE	R²	Â	b	MSE	R²
Acer saccharinum	Silver maple	28	−0.365	3.502	0.21332	0.79	0.406	1.778	0.03789	0.90	−0.205	1.995	0.03091	0.93	−0.109	2.023	0.05484	0.88
Cinnamomum camphora	Camphor tree	30	0.385	2.723	0.11999	0.76	−0.165	1.959	0.05145	0.79	−1.150	2.615	0.02691	0.93	−1.207	2.513	0.08081	0.80
Fraxinus excelsior ‘Hessei’	European ash	27	0.995	2.072	0.15637	0.74	0.972	1.031	0.02168	0.79	−0.960	2.483	0.01828	0.96	0.725	0.991	0.05596	0.57
Ginkgo biloba	Ginkgo	31	−2.717	5.015	0.10769	0.83	0.534	1.465	0.03802	0.82	−0.471	1.989	0.03490	0.90	0.174	1.542	0.07857	0.71
Koelreutaria paniculata	Goldenrain tree	28	0.340	2.559	0.05686	0.94	0.461	1.454	0.02356	0.92	−0.232	1.873	0.02793	0.94	−0.262	1.719	0.10639	0.78
Lagerstroemia indica	Crapemyrtle	25	−0.160	2.249	0.15280	0.64	0.560	1.080	0.02942	0.72	−0.236	1.679	0.04358	0.81	−0.573	1.805	0.06868	0.76
Liquidambar styraciflua	Sweetgum	30	−0.720	3.509	0.07674	0.51	0.092	1.973	0.03924	0.55	−1.256	2.606	0.03890	0.68	−0.234	2.074	0.06311	0.45
Magnolia grandiflora	Southern magnolia	28	−0.010	2.609	0.09677	0.45	−0.553	2.280	0.03663	0.69	−0.609	2.095	0.03918	0.64	−1.402	2.733	0.06863	0.63
Pistacia chinensis	Chinese pistache	28	1.008	1.997	0.08051	0.71	0.033	1.898	0.03921	0.72	−0.237	2.081	0.02925	0.81	−0.541	2.078	0.10162	0.54
Platanus × acerifolia	London plane	27	1.941	1.441	0.10575	0.66	−0.090	2.066	0.04352	0.72	−0.569	2.286	0.03315	0.81	−0.569	2.245	0.04604	0.74
Pyrus catteryana ‘Bradford’	Bradford pear	29	1.396	1.719	0.12057	0.40	0.429	1.525	0.00488	0.90	−0.782	2.383	0.02399	0.81	−0.258	1.843	0.02628	0.69
Zelkova serrata	Zelkova	30	0.921	2.294	0.06311	0.85	0.222	1.676	0.02015	0.86	−0.438	2.259	0.02014	0.92	−0.784	2.218	0.03537	0.86