The Air Resources Board has released the initial modeling results for managing natural and working lands for climate outcomes. According to Virginia Jameson, CDFA deputy secretary for climate and working lands, the results show that aggressive management is needed to prevent the lands from emitting more emissions than they reduce—a setback that could happen under California’s increasing wildfires.

“These results underscore the importance of making sure this doesn’t happen by making our lands a carbon sink,” Jameson writes in a blog post.

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She acknowledges the modeling left out carbon sequestration in the soil as well as whole orchard recycling, irrigated pasturelands and cropping systems with limited synthetic fertilizers. But it did find benefits from cover cropping and no-till farming, as well as wetlands restoration and forest thinning.