Construction and Application of Relationship Model between Development of Mining Industry and Carbon Emission of Energy Consumption

Table 11

Decoupling index and decoupling relationship of the nonferrous metal sector from 2001 to 2020.

Year	%∆E4	%∆G4	%∆C4	eT4	eT4 state		eK4	eK4 state		e4	e4 state
					2001	0.08		0.04	0.08		2.05	−III	−1	0.95	+IV	0	1.95	−III	−1
2002	0.19	0.08	0.07	2.39	−III	−1	0.36	+II	2	0.86	+IV	0
2003	0.10	0.13	0.29	0.73	+II	2	2.96	−III	−1	2.16	−III	−1
2004	0.03	0.14	−0.01	0.18	+II	2	−0.34	+I	3	−0.06	+I	3
2005	0.04	0.26	0.06	0.16	+II	2	1.54	−III	−1	0.25	+II	2
2006	0.06	0.24	0.08	0.25	+II	2	1.35	−III	−1	0.33	+II	2
2007	0.12	0.16	0.15	0.77	+II	2	1.20	+IV	0	0.92	+IV	0
2008	0.36	0.15	0.23	2.32	−III	−1	0.64	+II	2	1.49	−III	−1
2009	−0.19	0.19	−0.13	−0.99	+I	3	0.72	−II	−2	−0.71	+I	3
2010	0.13	0.13	0.15	1.01	+IV	0	1.18	+IV	0	1.19	+IV	0
2011	0.23	0.12	0.21	1.93	−III	−1	0.91	+IV	0	1.75	−III	−1
2012	0.11	0.18	0.09	0.64	+II	2	0.79	+II	2	0.51	+II	2
2013	0.02	0.15	0.04	0.14	+II	2	1.86	−III	−1	0.26	+II	2
2014	−0.00	0.05	0.00	−0.01	+I	3	7.37	+III	1	−0.06	+I	3
2015	−0.06	0.07	−0.07	−0.92	+I	3	1.16	+IV	0	−1.06	+I	3
2016	−0.08	−0.03	−0.07	2.38	+III	1	0.93	+IV	0	2.20	+III	1
2017	0.01	−0.27	0.03	−0.03	−I	−3	3.17	−III	−1	−0.11	−I	−3
2018	0.10	−0.30	0.13	−0.35	−I	−3	1.23	−III	−1	−0.43	−I	−3
2019	−0.01	−0.27	+0.00	0.02	−II	−2	−0.50	−I	−3	−0.01	−I	−3
2020	−0.02	−0.08	−0.05	0.29	−II	−2	2.08	+III	−2	0.61	−II	−2