More companies have promised to cut back deforestation in their supply chains for agricultural commodities since the Paris climate change deal last December, but progress in implementing those pledges is mixed, research groups said.

The debate around the role that agriculture should play in mitigating climate change and sequestering greenhouse gases is politically complex and technically complicated.

Strategies for Mitigating Climate Change in Agriculture, a California Environmental Associates and Climate Focus authored report, finds that annual carbon emissions from global agriculture can be reduced by as much as 50 to 90 percent by 2030.