Table 3. Biomass (kg tree⁻¹) of various parts of an apple tree with various ages in different geographical areas in China.

Site	Age (yr)	Stem diameter (cm)	Fruit	Branch	Stem	Coarse root	Leaf	Source*
North China	5	3.19	0.98	1.44	2.23	3.21	0.70	1
		3.11	1.58	2.25	2.38	1.10	0.76	1
		3.42	1.64	3.18	2.32	1.19	0.76	1
	18	13.22	26.06	83.29	52.47	23.84	5.73	1
		12.02	17.31	68.02	40.64	30.77	3.61	1
		13.42	14.60	92.00	52.21	29.48	7.11	1
	22	13.69	12.76	67.44	61.39	22.93	3.574	1
East China	7	5.55	2.42	7.82	7.10	4.91	1.62	2, 3
	8	5.51	9.74	5.22	24.24	12.19	3.47	2, 4
		5.51	6.52	5.81	20.20	7.71	4.35	5
	17	11.58	9.00	8.12	26.86	19.47	3.12	2, 6
		11.58	12.23	10.35	12.64	13.68	4.09	2, 5
Northwest China	5	3.58	0.54	1.73	1.69	0.94	0.55	7

Source*: 1 survey by the authors; 2–6 from per. comm. (2 Y. Jiang; 3 L. Zhao; 4 J. Fang; 5 D. Zhang; 6 N. Ding); 7 Zhang et al. [2009].