“Tree Removal.”Any intentional act which will cause a tree to die, including, but not limited to, acts which inflict damage upon root systems, bark, or other parts of the tree by fire, application of toxic substances, operation of equipment or machinery, changing the natural grade of land by excavation or filling the drip line area around the trunk, or to cut down, fell, push over, dig up, poison, burn, or severely prune, trim, or top, such that death of the tree results, or such that the tree is severely damaged and/or is destroyed in any manner, by any cause.