Table 2 Variables’ description.

From: The effect of productive capacity changes, income, and clean energy on ecological sustainability in China by novel KRLS approach

Type

Symbol

Definition

Unit

Data source

Dependent

EFP

Ecological footprint*

Global hectares

GFN11

LCF

Load capacity factor**

Biocapacity/EFP

Independent

PCI-T

PCI in total

Basis Point

UNCTAD12

PCI-EN

PCI for energy

PCI-HC

PCI for human capital

PCI-IC

PCI for ICT

PCI-IN

PCI for institutions

PCI-NC

PCI for natural capital

PCI-PS

PCI for private sector

PCI-SC

PCI for structural change

PCI-TR

PCI for transport

Control

GDP

Gross domestic product

Constant USD

World Bank (WB)62

NEC

Nuclear EC

Exajoules

Energy Institute (EI)63

REC

Renewable EC

  1. * and ** denotes the main dependent variable and alternative dependent variable for robustness.