Table 2 Data sources.

From: Studying carbon emission effects on ecological welfare performance in Chengdu–Chongqing urban agglomeration using super efficiency network SBM

Category

Index factors

Data sources

EWP index data

Energy consumption

Statistical yearbook

Land resource consumption

China Urban Construction Statistical Yearbook

Water consumption

Water Resources Bulletin

Regional GDP

Statistical yearbook

Wastewater, exhaust gas emissions

State Bulletin of Ecological Environment

Solid waste generation

Solid waste pollution prevention and control information

per capita park green space

China Urban Construction Statistical Yearbook

Number of students enrollment

Statistical yearbook

Number of beds in health institutions per 10,000 people

Statistical yearbook

Carbon emission data

Total carbon emissions

Emissions Database for Global Atmospheric Research

Administrative vector data

The CCUA administrative boundary

The Center for Resource and Environmental Science and Data of the Chinese Academy of Sciences