In a world where we live in a climatic hazard disaster, understanding human activities' impact on the environment becomes crucial, especially for developing countries. This study addresses this issue through the prism of carbon dioxide emissions (CO2) by examining how the growth of agricultural, forestry, and other land-use activities affects the environment. This study examines the long-term relationship between CO2 emissions and agriculture, forestry, and other land use by introducing other explanatory variables such as income per capita and population for 1970-2016. The econometric analysis results confirm a positive long-term relationship between CO2 emissions and agriculture, forestry, and other land use. The Granger causality tests show that this relationship's direction goes from agriculture, forestry, and other land use to CO2 emissions. For a developing country like Burundi, it is the growth of agricultural, forestry, and other land-use activities that determine GHG emissions level and not the other way around. Moreover, the ARDL model results adopted in this study validate our hypothesis, which assumes that Burundi has not yet reached its turning point in CO2 emissions due to economic growth. A low-carbon policy in favor of the environment can be implemented, and this cannot risk any negative repercussions on economic growth.