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

Table 9

Decoupling index and decoupling relationship of the petroleum and natural gas sector from 2001 to 2020.

Year	%∆E2	%∆G2	%∆C2	eT2	eT2 state		eK2	eK2 state		e2	e2 state
					2001	0.07		−0.08	0.09		−0.91	−I	−3	1.23	−III	−1	−1.12	−I	−3
2002	0.04	0.04	0.03	0.81	+IV	0	0.86	+IV	0	0.70	+II	2
2003	0.03	0.10	0.02	0.26	+II	2	0.83	+IV	0	0.21	+II	2
2004	−0.15	0.06	−0.12	−2.26	+I	3	0.81	−IV	0	−1.84	+I	3
2005	0.02	0.10	0.03	0.24	+II	2	1.24	−III	−1	0.30	+II	2
2006	0.01	0.04	−0.04	0.37	+II	2	−2.63	+I	3	−0.98	+I	3
2007	0.02	0.07	0.01	0.36	+II	2	0.26	+II	2	0.09	+II	2
2008	0.09	0.07	0.06	1.40	−III	−1	0.67	+II	2	0.93	+IV	0
2009	−0.01	0.08	0.00	−0.09	+I	3	0.16	−II	−2	−0.01	+I	3
2010	0.05	−0.03	0.04	−1.89	−I	−3	0.84	+IV	0	−1.58	−I	−3
2011	−0.06	−0.03	−0.04	2.55	+III	1	0.60	−II	−2	1.54	+III	1
2012	−0.01	−0.09	0.00	0.08	−II	−2	0.38	−II	−2	0.03	−II	−2
2013	0.07	0.03	0.05	2.31	−III	−1	0.77	+II	2	1.79	−III	−1
2014	0.03	0.02	0.03	1.39	−III	−1	0.97	+IV	0	1.35	−III	−1
2015	−0.01	0.10	0.00	−0.11	+I	3	−0.25	−I	−3	0.03	+II	2
2016	−0.09	−0.02	−0.07	4.18	+III	1	0.75	+II	2	3.16	+III	1
2017	+0.00	−0.09	−0.01	−0.02	−I	−3	−4.77	+I	3	0.09	−II	−2
2018	−0.01	−0.07	−0.03	0.10	−II	−2	3.57	+III	1	0.37	−II	−2
2019	0.02	0.04	0.02	0.53	+II	2	1.01	+IV	0	0.54	+II	2
2020	−0.02	0.06	0.05	−0.33	+I	3	−2.86	−I	−3	0.95	+IV	0