Table 1 Low-carbon transformation index system.

From: Low-carbon transformation of China’s cities: evaluation and spatiotemporal pattern evolution

Primary indices

Secondary indices

Third-level indices

Fourth-level indices

Attribute

Weight

Regional low-carbon transformation

Low-carbon development

Carbon emissions intensity

Carbon emissions / GDP

0.0028

Environmental pollution

Average PM2.5 concentration

0.0066

Volume of industrial wastewater discharge

0.0008

Volume of industrial soot (dust) emissions

0.0002

Energy consumption

Energy consumption / GDP

0.0015

Low-carbon attention

Government low-carbon attention

+

0.0117

Public environmental attention

+

0.3698

Economic transformation

Economic growth

Per capita GDP

+

0.0493

GDP growth rate

+

0.0028

Industrial transformation

Proportion of tertiary industry

+

0.0127

Green innovation

Per capita green invention patent authorization

+

0.2157

Financial transformation

Green finance

+

0.0149

Inclusive finance

+

0.0214

Human capital

Number of students in regular higher education institutions per 10,000 people

+

0.1025

The proportion of employees in computer services, information transmission, and software industries.

+

0.1872

  1. It shows the composition of the index system and the corresponding weights.