President Biden will sign an executive order on Friday laying the groundwork for protecting some of the biggest and oldest trees in America’s forests. …Biden will direct the Forest Service and Bureau of Land Management to inventory mature and old-growth forests nationwide. He will also require the agencies to identify threats to these trees and to use that information to write policies that protect them. The president’s order, however, will not ban logging of mature and old-growth trees, they added, and the administration is not considering a nationwide prohibition. It will include initiatives aimed at curbing deforestation overseas, promoting economic development in regions with major timber industries and calculating the economic value of other natural resources such as wetlands. …In writing new policies, the administration will also have to walk a line between preserving older trees on federal land and giving managers enough flexibility to assure those forests’ health.