Tag Archives: European Commission

Environment  Mongabay: The science of forest biomass — Conflicting studies map the controversy

Before: An Estonian forest filled with a variety of tree species and a natural habitat for biodiversity. Such ecosystems are essential to climate mitigation, from carbon sequestration to flood control.
After: The same Estonian forest clear cut so that the stemwood — tree trunks seen stacked in rows — can be shipped to one of the world’s largest wood-pellet producers. This is an ecosystem destroyed. Biodiversity scattered, carbon sequestration is diminished, flood control lost. Photos by Karl Adami

This story was months in the making. Glenn Scherer, my editor at Mongabay, and I had been discussing a story that took a step back from the breaking news around climate policy and rising biomass consumption to look at the science behind the issue. Since last spring, I researched and printed out peer-reviewed studies with diverging outcomes and read them closely. The biomass industry can point to scores of research that supports its claim that wood pellets are good for forests and a genuine climate solution, while forest advocates can pile up even more research that explains just how big a mistake the Kyoto Protocol made when it classified all bioenergy as renewable and carbon neutral.

Because there are so many points of difference, the biggest challenge in this story was narrowing the scope of issues to compare, knowing full well that in a 2,000-word story, important issues would not make it into this story. Still, I kept my focus on the issues industry officials tend to use the most in defending themselves against their growing chorus of critics.

This particular story is as balanced as fairness allows. By that I mean, it is fair in clearly explaining the industry arguments and citing the studies that back their claims, while making sure to be accurate in the overall thrust of the story in terms of the impact woody biomass is having on — to pick just one issue — the accuracy of carbon-emissions accounting.

This is among the more important stories I’ve done on this issue since I started covering it in 2018. Hopefully, it will serve as a trustworthy resource for new reporters coming to this story and heavily lobbied policymakers trying to figure out who and what to believe when it comes to energy generation and actual climate mitigation.

In the Southeast U.S. — the world’s largest producer of wood pellets — natural forests are often cleared and then replanted with pine plantations. Environmentalists say fast-growing pine does not sequester nearly as much carbon as the hardwood and softwood forests they replace, nor harbor much biodiversity. Biomass backers say fast growing young forests sequester more carbon than mature forests. Pine plantations like this one are harvested on 20-year time cycles. Photo credit: nationalagroforestrycenter on Visualhunt