Selectively thinning for genetically healthier trees creates a stronger and more robust forest. Characteristics of a strong tree include a single stem, good cone development, a straight trunk, no presence of rot or damage and a healthy, full top. Healthier trees have a better the chance of surviving drought conditions.
Creating a healthy forest involves proper tree spacing and clearing out unneeded dead and downed on the forest floor. This also carries the benefit of easier access while walking through your forest. The danger of falling dead trees is reduced increasing your safety while enjoying the trees. A healthy forest also allows for increased access for wildlife to take advantage of the improved habitat that is created.
We must realize that a forest is a living ecosystem that is continuously changing. Creating a single age or species forest is asking for disaster. A healthy forest stand should have a mixture of young and old growth trees of various species if possible. A diverse forest ecosystem will be ready for various ailments that come and go throughout its life, creating a forest that can be enjoyed for many generations.