Synergistic Evaluation and Constraint Factor Analysis on Urban Industrial Ecosystems of Traditional Industrial Area in China

Table 2

Measurements of constraint grade based on PSR model.

System layer	Normative level	Barrier level	Indicator	Barrier level	Sort
Pressure	Industrial economy P1	0.415	P11	0.0617	5
			P12	0.0610	6
			P13	0.0578	9
			P14	0.0437	14
			P15	0.0592	7
			P16	0.0642	3
			P17	0.0674	1
	Energy consumption P2	0.042	P21	0.0193	18
			P22	0.0229	17
State	Discharge of the three wastes P3	0.052	S11	0.0096	23
			S12	0.0096	22
			S13	0.0162	21
			S14	0.0165	20
	Greenfield resources S2	0.098	S21	0.0589	8
			S22	0.0386	15
	Air quality S3	0.051	S31	0.0183	19
			S32	0.0323	16
Response	Governance facilities R1	0.103	R11	0.0499	13
			R12	0.0528	12
	Governance capacity R2	0.241	R21	0.0654	2
			R22	0.0543	11
			R23	0.0572	10
			R24	0.0638	4