Table 2 Old tree's health evaluation score table (take the case of Chinese juniper, no. 1)

Section	Subsection	Change fraction	Evaluation interval
			Very healthy	Healthy	Ordinary	Unhealthy	Very unhealthy
Individualaging 0.39×100=39	Tree vigo (u)r	0.16×39=6.24	6.24	4.99	3.74	25	1.25
			Normal	10% difference	20% difference	30% difference	Above 40%
	Trunk rotting status	0.17×39=6.63	6.63	5.3	3.98	265	1.33
			Normal	10% difference	20% difference	30% difference	Above 40%
	Branches’ dead status	0.09×39 =3.51	3.51	281	2.11	1.4	0.7
			0∼2	2∼4	4∼6	6∼8	Above 8
	Tree cavity	0.11×39=4.29	4.29	3.43	2.57	1.72	0.86
			> 0.1	0.1∼0.5	0.5∼1.0	1.0∼1.5	Above 1.5
	Leaves’ fallen status	0.06×39 =2.34	2.34	1.87	1.4	0.94	0.47
			Normal	10% difference	20% difference	30% difference	Above 40%
	Tree shape	0.09×39 =3.51	3.51	281	2.11	1.4	0.7
			< 81	80∼71	70∼61	60∼51	< 50
	Elongation and germination	0.10×39=3.90	3.9	3.12	2.34	1.56	0.78
			Normal	10% difference	20% difference	30% difference	Above 40%
	Density of branches and leaves	0.10×39=3.90	3.9	3.12	2.34	1.56	0.78
			Normal	10% difference	20% difference	30% difference	Above 40%
	Crack	0.12×39=4.68	4.68	3.74	2.81	1.87	0.94
			0	1	2	3	Above 4
Growth environment 0.22×100=22	Drainage	0.14×22=3.08	3.08	246	1.85	1.23	0.62
			Within 12h	12∼24h	24∼36h	36∼48h	Above 48h
	Light condition	0.16×22=3.52	3.52	282	2.11	1.41	0.7
			Above 80%	60∼80%	40∼60%	20∼40%	0∼20%
	Air pollution	0.14×22=3.08	3.08	246	1.85	1.23	0.62
			0∼10%	10∼20%	30∼40%	40∼50%	Above 50%
	Soil thickness	0.12×22=2.64	2.64	211	1.58	1.06	0.53
			0∼10cm	10∼20cm	20∼30cm	30∼40cm	Above 40cm
	Other tree species’ intrusion	0.15×22=3.30	3.3	264	1.98	1.32	0.66
			0∼10%	10∼20%	30∼40%	40∼50%	Above 50%
	Stamping	0.14×22=3.08	3.08	246	1.85	1.23	0.62
			0∼10%	10∼20%	30∼40%	40∼50%	Above 50%
	Concrete cover	0.02×22 =0.44	0.44	0.35	0.26	0.18	0.09
			0∼10%	10∼20%	30∼40%	40∼50%	Above 50%
	Biological diversity	0.09×22=1.98	1.98	1.58	1.19	0.79	0.4
			Above 80%	60∼80%	40∼60%	20∼40%	0∼20%
	Root competition	0.04×22 =0.88	0.88	0.7	0.53	0.35	0.18
			0∼;10%	10∼20%	30∼40%	40∼50%	Above 50%
Diseases and insect pests 0.14×100=14	Bacterial diseases	0.17×14=2.38	2.38	1.9	1.43	0.95	0.48
			None at all	10% difference	20% difference	30% difference	Above 40%
	Root pests	0.14×14=1.96	1.96	1.57	1.18	0.78	0.39
			None at all	10% difference	20% difference	30% difference	Above 40%
	Baring pests	0.16×14=2.24	2.24	1.79	1.34	0.9	0.45
			None at all	10% difference	20% difference	30% difference	Above 40%
	Defoliator	0.13×14=1.82	1.82	1.46	1.09	0.73	0.36
			None at all	10% difference	20% difference	30% difference	Above 40%
	Fungal disease	0.18×14=2.52	2.52	202	1.51	1.01	0.5
			None at all	10% difference	20% difference	30% difference	Above 40%
	Parasites	0.10×14=1.40	1.4	1.12	0.84	0.56	0.28
			None at all	10% difference	20% difference	30% difference	Above 40%
	Virus disease	0.12×14=1.68	1.68	1.34	1.01	0.67	0.34
			None at all	10% difference	20% difference	30% difference	Above 40%
Soil condition 0.08×100 =8	Soil property	0.16×8=1.28	1.28	1.02	0.77	0.51	0.26
			Sandy loam	Clay loam soil	Loam	Sandy soil	Clay
	Sal pH	0.19×8=1.52	1.52	1.22	0.91	0.61	0.3
			Optimum	±5%	±10%	±15%	±20%
	Soil moisture level	0.20×8=1.60	1.6	1.28	0.96	0.64	0.32
			Optimum	±5%	±10%	±15%	±20%
	Soil organic matter	0.14×8=1.12	1.12	0.9	0.67	0.45	0.22
			Optimum	±5%	±10%	±15%	±20%
	Soil total nitrogen	0.18×8=1.44	1.44	1.15	0.86	0.58	0.29
			Optimum	±5%	±10%	±15%	±20%
	Soil effective phosphate	0.11×8=0.88	0.88	0.7	0.53	0.35	0.18
			Optimum	±5%	±10%	±15%	±20%
	Electric conductivity	0.02×8=0.16	0.16	0.13	0.1	0.06	0.03
			Optimum	±5%	±10%	±15%	±20%
Climate change 0.11×100=11	Thunder	0.25×11=2.75	2.75	2.2	1.65	1.1	0.55
			None at all	10% difference	20% difference	30% difference	Above 40%
	Hail	0.24×11=2.64	2.64	2.11	1.58	1.06	0.53
			None at all	10% difference	20% difference	30% difference	Above 40%
	Flood	0.22×11=2.42	2.42	1.94	1.45	0.97	0.48
			None at all	10% difference	20% difference	30% difference	Above 40%
	Drought	0.02×11=0.22	0.22	0.18	0.13	0.09	0.04
			None at all	10% difference	20% difference	30% difference	Above 40%
	Strong wind	0.16×11=1.76	1.76	1.41	1.06	0.7	0.35
			None at all	10% difference	20% difference	30% difference	Above 40%
	Ozone injury	0.11×11=1.21	1.21	0.97	0.73	0.48	0.24
			None at all	10% difference	20% difference	30% difference	Above 40%
Management	status 0.06×100 =6	Disease and insect pest control	0.14×6=0.84	0.84	0.68	0.51	0.34	0.17
	Above 1 year 2 times			1 year 2 times	1 year 1 times	2 year 1 times	Above 3 year 1 times
	Trees’ surgery	0.17×6=1.02	1.02	0.82	0.6	0.4	0.18
			Above 1 year 2 times	1 year 2 times	1 year 1 times	2year 1times	Above 3 year 1 times
	Precision survey	0.16×6=0.96	0.96	0.76	0.57	0.38	0.19
			Above 1 year 2 times	1 year 2 times	1 year 1 times	2 year 1 times	Above 3 year 1 times
	Tree pruning	0.15×6=0.90	0.9	0.72	0.54	0.36	0.18
			Normal	10% difference	20% difference	30% difference	Above 40%
	Management register	0.11×6=0.66	0.66	0.52	0.39	0.26	0.13
			Within 1 year	2 year	3 year	4 year	5 year
	Support structure	0.03×6=0.18	0.18	0.16	0.12	0.08	0.04
			Normal	10% difference	20% difference	30% difference	Above 40%
	Nutrition supply	0.13×6=0.78	0.78	0.64	0.48	0.32	0.16
			Wthin 1 year	2 year	3 year	4 year	5 year
	Management cycle	0.11×6=0.66	0.66	0.52	0.39	0.26	0.13
			Above 5 year 1 times	4 year 1 times	3 year 1 times	2 year 1 times	Wthin 1 year 1 times
Total			100.00	80.00	60.00	40.00	20.00