Table 1.

All parameters.

Parameters	Definitions	Value Range
LG	The local government	-
EP	The enterprise	-
$p$	Probability of the local government showing a strong willingness to supervise	$0\le p\le 1$
$q$	Probability of the enterprise showing a strong willingness to reduce emissions	$0\le q\le 1$
${\xi }_1$	The cost of a strong willingness for the enterprise	${\xi }_1>0$
${\xi }_2$	The cost of a weak willingness for the enterprise	${\xi }_2>0$
${\psi }_1$	The cost of a strong willingness for the government	${\psi }_1>0$
${\psi }_2$	The cost of a weak willingness for the government	${\psi }_2>0$
$e$	Extra benefit for the enterprise	$e>0$
$f$	The penalty value	$f>0$