Trees and Vandalism


I am looking at replanting some trees that were sadly vandalised beyond repair by being snapped near the base.  I am planning to replace them this winter/spring, but also looking to put some form of protection in to prevent the new trees from having a similar ending.

One possible solution that might work is to build some sort of tree guard, with the local community being involved in constructing them.  I was just wondering if anyone else has any ideas or hints to prevent future trees suffering similar vandalism.