Protecting Existing Trees During Constructioin
Working around existing trees or under their canopies can be harmful to the trees. If you are planning to do work under the tree canopy or dripline of the tree it will be beneficial to read this article first and decide if the tree you will be working under is worth saving and how to protect it from stress.
The link address is: http://www.sustland.umn.edu/implement/protecting_trees.html