Analysis of the Key Factors of Ecological Environment Protection in the National Economic Sustainable Development Goals

Table 4

Secondary index values in Leshan City.

Class	2016	2017	2018	2019	2020
Social environment	0.67	0.68	0.73	0.84	0.88
Economic environment	0.64	0.65	0.7	0.81	0.83
Natural environment	0.61	0.62	0.56	0.64	0.75