Tree bark damage
There are may factors that go into the tree being able to survive this damage. It depends on the health of the tree prior to the damage, how much damage was actually done, and the age of the tree. If less than 25% of the tree bark around the tree has been damage the tree stands a good chance of surviving. The tree has natural abilities to heal itself from damage it sustains.
This Extension publication explains how to treat wounds in trees.
Some additional things you can to inorder to help protect the tree are:
-protect the tree from anymore damage
-place mulch under the tree approx. 2-4 inches deep and avoid placing the mulch against the trunk of the tree
- Have your soil tested through the Extension Service. A soil test determines the acidity or alkalinity pH of the soil, along with the levels of nutrients that are present. Depending on the results, you may need to add nutrients to make up for any deficiencies in the soil.
-Monitor the tree for any signs of stress, insects and/or diseases they may become present
Please let me know if you need anymore information.