According to this chapter, this SCP is relatively easy to deal with, to the point where you could feasably eliminate all instances of it. Such an operation would require vast ammounts of resources to subdue the skelly, but as long as it doesn’t burn down any other trees and create saplings, you could win against it.
(Then again, they didn’t specify if only burning the trees down would spawn the monster, because then you could just get rid of it with toxins or something along those lines)