Tree removal should be approached differently depending on how much damage there is to a tree and what type of damage the tree has sustained. There are two main methods for tree removal, mechanical and chemical.
A tree that has sustained only minor damage will usually come back to life within a few weeks or months without intervention. The roots have been trapped and are now healing. If the root system has suffered damage and requires repair, your goal is to remove as much of the damaged material as possible and make the root system stronger. The mechanical process involves using a powered cutter or shear arm that will remove the damaged portions of the tree while the roots heal and regrow.
If the roots are severely damaged and can not heal or regrow, the solution is to remove the whole tree from the location but to leave the one piece of living tissue, called a stump. As the stump heals, it will begin to grow new roots, so it is important to move the stump before it does. This makes the cut much easier.
Chemical removal involves removal of all the roots and stump so that the tree can live without the support of the stump. There are two main ways that this can be done. You can use a mechanical method or a mechanical and chemical method. In the case of the mechanical process, the root system will be removed by suspending the entire tree or stump by a rope from a tree-rescuing pole.
The system consists of suspending the tree on a rope with a pulley system to allow the tree to fall away from the tree-rescuer. The system uses either hydraulic or mechanical means to keep the tree suspended. When the stump begins to fall, the process is reversed and the tree is dragged back towards the tree-rescuer. This type of system is very effective and ensures that no tree root is left attached to the tree.
The second method for removing trees is called tree-cycling, in which the tree is simply cut down to the ground and is then placed in a large wheelbarrow or a V-fork that carries the tree along and crushes the root. The process is extremely effective for removing roots that are overhanging the top of the tree-rescuer.
In certain tree areas, the stump will continue to grow and in these cases, a chipper may be used to cut the stump down to the ground. In other cases, where there is a lot of root damage, an axe will be used to chop down the tree. Lastly, if the stump can not be removed, it will need to be wrapped and covered with mulch.
Chemical tree removal can be very effective but it can take more time than mechanical or chipper methods. In most cases, chemical methods for tree removal are very expensive and if the plant was one of many smaller trees, it will not have to be removed, but instead will be left to regrow.