If you’re looking to conserve Pandas in the wild then it’s best if the forest you’re keeping them in has never been logged. I Zhang et al. writing in Biology Letters state “[I]t is no surprise that bamboo predicts panda habitat use. But it is surprising that old-growth forest should attain the same level of importance as bamboo.” The finding is the result of the scale of the study which covers 70% of panda habitat and not just a few reserves.
I got the story from the BBC website. Baffingly it doesn’t link to the source paper, Old-growth forest is what giant pandas really need, even though Biology Letters have given it Free Access.