Abstract:Forest ecosystem health is a new theory on forest ecosystem management in recent years. The word `health‘ was first used in medical science, and now used by the ecologists and scientists in environment for reference. Then the conception of forest ecosystem health was put forward. Many scientists and experts domestic and abroad, have spent much time working on the definitions, tests, evaluations, and management of this new theory, and now, forest ecosystem health has became the criterion and goal of forest c...