US land sector mitigation investments and emissions implications

Area of Science:

• Environmental Economics
• Climate Change Mitigation
• Land Use Policy

Background:

• The U.S. land sector is crucial for meeting national greenhouse gas (GHG) emissions reduction targets.
• Effective strategies are needed to enhance carbon sequestration and reduce emissions from land-based activities.

Purpose of the Study:

• To quantify the impact of varying investment levels on land-based climate change mitigation activities in the U.S.
• To identify optimal allocation strategies for maximizing emissions abatement through forestry and agricultural sectors.

Main Methods:

• Utilized a dynamic economic model simulating land use sectors across 11 U.S. regions.
• Incorporated 26 distinct forestry and agricultural mitigation strategies.
• Analyzed the effects of different investment scenarios and policy implementation timings.

Main Results:

• Annual investments of $2.4 billion can achieve approximately 80 million metric tons of carbon dioxide equivalent (MtCO2e) annual abatement.
• Optimal investment allocation favors the forestry sector and the Corn Belt region.
• Limiting eligible activities, such as focusing solely on agriculture with $24 billion, can decrease mitigation by 48%.

Conclusions:

• Strategic and comprehensive investment in land-based mitigation is vital for achieving U.S. climate goals.
• The timing of policy implementation significantly influences cost-effectiveness and overall abatement levels.
• Diversified investment across eligible land-based activities maximizes mitigation potential.