Study: Maine Forests Can Boost Carbon Storage At Current Harvest Levels

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Maine forests already absorb about 70 percent of the state’s annual fossil fuel emissions.

Now, a new study shows that Maine’s commercial forest landowners could increase annual carbon storage by at least 20 percent over the next 60 years while maintaining timber harvest levels. The findings are timely as the demand for carbon offset projects accelerates.

The forest modeling study across 7.6 million acres of mostly privately-owned commercial forest lands in northern Maine was conducted by researchers from the University of Maine, the New England Forestry Foundation, and the U.S. Forest Service.

Under current management practices, the forestlands are expected to remove 36 million metric tons of CO2 per year. If climate smart strategies, such as increased planting, thinning and selective harvesting were widely adopted, the study suggests even more carbon could be stored without decreasing harvest levels.

“Unless you maintain harvest there’s the potential for there to really be no benefits to the atmosphere,” said Tom Walker, a natural resources economist and project coordinator.

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“If a landowner in Maine cuts back on their harvest and stores more carbon, which makes a lot of sense, [and] if somebody else cuts that wood in Maine or in the U.S. or in the world, you know, there’s no net benefit to the atmosphere,” Walker said.

The study’s authors also say undertaking these improvements could be done at relatively low cost compared to other ways of mitigating climate change.

The research comes as demand from companies looking to offset their carbon emissions through forest carbon removal projects increased four-fold between 2020 and 2021.
Alec Giffen of the New England Forestry Foundation said there are other reasons to be encouraged by the findings.

“We can improve wildlife habitat,” said Giffen. “We can produce more wood. We can produce higher quality wood. We can increase the returns that landowners see from owning land,”

“I see this as potentially a game changer in terms of the kinds of things you can do in a financially beneficial way with forest management in Maine.”

The study was commissioned by the Forest Carbon for Commercial Landowners Initiative, a group of conservationists, scientists and commercial landowners who want to better understand the carbon storage potential of the Maine woods.