Table 3. Allometric equations (log₁₀Y=a+b×log₁₀X) to estimate carbon storage (g) of tree components in Acer palmatum.

Variables (X)	Tree component (Y)	Methods	Regression coefficient		R²	RMSE	P-value	CF
			a	b
DBH(cm)	Stem wood	Log	1.8234	1.8892	0.8450	0.1180	<.0001	1.0162
	Stem wood	GMM	1.4097	2.2779	0.8087	0.1311	-^*	1.0200
	Stem bark	Log	0.8025	1.6926	0.6376	0.1861	<.0001	1.0407
	Stem bark	GMM	0.3977	2.0558	0.6012	0.1952	-	1.0448
	Stem	Log	1.8596	1.8791	0.8378	0.1206	<.0001	1.0169
	Stem	GMM	1.4435	2.2691	0.8009	0.1336	-	1.0208
	Branch	Log	1.1364	2.1944	0.4436	0.3584	0.0013	1.1594
	Branch	GMM	0.9040	2.4992	0.3989	0.3725	-	1.1732
	Leaf	Log	0.9446	1.7751	0.3858	0.3266	0.0035	1.1307
	Leaf	GMM	0.2661	2.4798	0.3027	0.3480	-	1.1496
	Aboveground	Log	1.9580	1.9680	0.7494	0.1660	<.0001	1.0322
	Aboveground	GMM	1.4848	2.4258	0.7085	0.1790	-	1.0376
	Root	Log	1.6315	2.1289	0.7500	0.1792	<.0001	1.0377
	Root	GMM	1.2098	2.5024	0.7188	0.1901	-	1.0425
	Total	Log	2.1056	2.0502	0.7786	0.1595	<.0001	1.0297
	Total	GMM	1.5873	2.5355	0.7339	0.1748	-	1.0358
DBH²xH(cm².m)	Stem wood	Log	1.4918	0.8317	0.9069	0.0914	<.0001	1.0097
	Stem wood	GMM	1.1308	0.9620	0.8847	0.1018	-	1.0120
	Stem bark	Log	0.4024	0.7822	0.7542	0.1533	<.0001	1.0274
	Stem bark	GMM	−0.0587	0.9414	0.7186	0.1640	-	1.0314
	Stem	Log	1.5241	0.8293	0.9036	0.0930	<.0001	1.0100
	Stem	GMM	1.1482	0.9649	0.8794	0.1040	-	1.0125
	Branch	Log	0.3285	1.1183	0.6380	0.2891	<.0001	1.1010
	Branch	GMM	0.2816	1.1630	0.6083	0.3007	-	1.1097
	Leaf	Log	0.2754	0.9103	0.5619	0.2759	0.0001	1.0916
	Leaf	GMM	−0.3953	1.1672	0.5055	0.2931	-	1.1040
	Aboveground	Log	1.5228	0.8987	0.8654	0.1216	<.0001	1.0172
	Aboveground	GMM	0.9340	1.1130	0.8158	0.1423	-	1.0236
	Root	Log	1.2221	0.9501	0.8272	0.1490	<.0001	1.0259
	Root	GMM	0.8977	1.0613	0.8138	0.1547	-	1.0279
	Total	Log	1.6756	0.9278	0.8830	0.1159	<.0001	1.0156
	Total	GMM	1.1116	1.1292	0.8412	0.1350	-	1.0212

not determined.