Major thinning is ramping up on northern Arizona’s national forests. As Arizona Public Radio’s Ryan Heinsius reports, the work represents the early stages of the biggest-ever U.S. forest restoration project.
The ponderosa pine forest, across northern and central Arizona, looks green and healthy, but scientists say just the opposite is true. And they’ve joined with local government officials, environmentalists and industry to restore the forest’s health.
The world’s largest ponderosa pine forest stretches across higher elevations from the San Francisco Peaks to the Arizona/New Mexico border. But in the last century, human intervention has threatened its health.