Table 7. Coefficients of allometric equations for estimating biomass by tree part component M. glyptostroboides’s diameter at breast height(DBH), diameter at breast height and height(DBH²×Height), and polynomial using diameter at breast height(a×b(DBH)×c(DBH²).

Species	Model types	Tree component (Y)	Coefficients			R2	RMSE	P-value
			a	b	c
M. glyptostroboides	I	Volume (m3/tree)	0.000539	1.876	-	0.821	0.033	< 0.001
		Stem wood (kg)	0.437	1.528	-	0.820	6.948	< 0.001
		Stem bark (kg)	0.118	1.254	-	0.707	0.952	< 0.001
		Stem (kg)	0.540	1.495	-	0.822	7.564	< 0.001
		Branches (kg)	0.569	1.290	-	0.704	5.376	< 0.001
		Foliage (kg)	1.414	0.679	-	0.679	1.000	< 0.001
		Roots (kg)	0.746	1.315	-	0.860	4.772	< 0.001
		Aboveground (kg)	1.679	1.315	-	0.826	10.884	< 0.001
		Total (kg)	2.422	1.316	-	0.882	13.959	< 0.001
	II	Volume (m3/tree)	0.000634	0.799	-	0.854	0.028	< 0.001
		Stem wood (kg)	0.448	0.627	-	0.851	6.357	< 0.001
		Stem bark (kg)	0.034	0.539	-	0.787	0.793	< 0.001
		Stem (kg)	0.483	0.616	-	0.841	6.754	< 0.001
		Branches (kg)	0.054	0.567	-	0.819	4.022	< 0.001
		Foliage (kg)	1.414	0.293	-	0.761	0.834	< 0.001
		Roots (kg)	0.301	0.538	-	0.866	4.535	< 0.001
		Aboveground (kg)	0.505	0.556	-	0.918	7.541	< 0.001
		Total (kg)	0.787	0.551	-	0.931	9.974	< 0.001
	III	Volume (m3/tree)	−0.056152	0.006629	0.000193	0.792	0.032	< 0.001
		Stem wood (kg)	−23.404	3.300	0.003	0.791	6.843	< 0.001
		Stem bark (kg)	6.102	−0.342	0.014	0.732	0.888	< 0.001
		Stem (kg)	−17.302	2.958	0.017	0.794	7.511	< 0.001
		Branches (kg)	73.750	−5.540	0.158	0.878	3.613	< 0.001
		Foliage (kg)	12.803	−0.429	0.016	0.750	0.881	< 0.001
		Roots (kg)	34.664	−1.651	0.091	0.871	4.353	< 0.001
		Aboveground (kg)	69.251	−3.010	0.191	0.865	10.079	< 0.001
		Total (kg)	103.915	−4.661	0.282	0.895	12.595	< 0.001