본 연구에서는 NAFTA 3개국의 소득 변화에 따른 온실가스 배출의 변화가 단조적으로 나타난다고 가정하고 분석을 진행하였다.
In this research, it had been assumed that the changes in GHG emissions according to earnings alterations in the three NAFTA countries appeared monotonically, plus the analysis was conducted.