Table 1. Median of above–ground biomass (AGB), below–ground biomass (BGB), root to shoot ratio (RS) and allometric relationships between AGB and BGB (p<0.05) across China’s biomes.

Vegetation category	AGB(Mg ha−1)	BGB(Mg ha−1)	RS	Range	n	LogAGB–logBGB models
						Slope	Intercept	r 2
Vegetation type
Primary forest	99.1	24.0	0.24	0.03–1.20	454	0.87	−0.37	0.85
Secondary forest	93.7	22.6	0.23	0.08–0.58	97	0.95	−0.52	0.78
Planted forest	68.4	15.5	0.22	0.05–0.90	1002	0.81	−0.30	0.76
Temperate grassland	1.5	7.7	5.73	0.43–29.2	243	0.77	0.74	0.58
Alpine grassland	0.7	4.1	6.27	0.81–45.6	262	1.00	0.79	0.73
Soil texture
Loam forest	76.5	16.7	0.22	0.02–1.20	967	0.90	−0.45	0.82
Sand forest	62.2	15.6	0.25	0.03–0.70	242	0.82	−0.30	0.79
Clay forest	91.1	19.3	0.22	0.05–0.50	345	0.87	−0.42	0.87
Loam grassland	1.0	5.5	6.10	0.43–29.2	336	0.78	0.74	0.66
Sand grassland	0.7	5.0	5.61	0.56–45.6	153	0.89	0.71	0.59
Clay grassland	1.1	7.2	7.60	2.0–12.72	10	0.96	0.87	0.74
Loam shrubland	9.5	11.3	0.71	0.26–1.56	12	1.00	−0.31	0.80
Sand shrubland	10.6	8.6	0.77	0.47–1.96	9	1.16	−0.44	0.95
Region
China’s forests	76.7	17.0	0.23	0.03–1.20	1551	0.86	−0.36	0.81
Global forests	81.0	22.5	0.25	0.09–1.16	207	0.88	−0.32	0.90
China’s grasslands	1.0	5.2	6.00	0.43–45.6	502	0.82	0.74	0.63
Global grasslands	3.5	12.7	3.26	0.38–26.0	61	0.40	0.84	0.20
China’s shrublands	10.6	10.6	0.73	0.26–1.96	22	1.05	−0.16	0.89
Global shrublands	16.6	14.0	1.84	0.34–4.25	8	–	–	–

n, number of samples; Slope, the scaling exponent of the log–log linear functions; Intercept, the allometric constant of log–log linear functions; r, the coefficient of determination.