The Research On Evaluation Of Forest Health In WeiDu Forest

Forest is an extremely important part of ecosystems for human survival. It have played a pivotal importance in economic, ecological, social and other services. With the rapid growth of the world’s population, it making the forest resources have been severely damaged, making the forest "health" suffered a serious impact. Therefore, evaluation of forest health not only can determined forest health level, but also can provide the science basis for the development of forest protection measures.The artic take the Weidu forest farm which in Guangxi as a example, take the forest operations subcompartment as the research unit, establishment a evaluation system of forest health for Weidu forest farm, and evaluate its forest health, Finally, proposed the strategy of forest classification management. This artic concludes:(1)Through literature and information, selected 29 indicators which related to forest health assessment constitutes the preliminary evaluation system. And based on screening indicators principle, use brainstorming, within and outside the law and the Delphi method to filter index. Finally, selected 15 indicators to constitute evaluation system of forest health for Weidu forest farm.(2)It evaluated the 1431 subcompartment’s forest health by comprehensive index evaluation method. And determine the level of each subcompartment’s health. The unhealthy subcompartment is 131, accounting for 9.15% of the total; The Subhealth subcompartment is 499, accounting for 34.87% of the total; The health subcompartment is 623, accounting for 43.54% of the total; The quality subcompartment is 178, accounting for 12.44% of the total.(3) Analysis of the characteristics of different health levels stand in origin, mixed mode, species and other aspects. And according to their characteristics, it proposed the main countermeasures of forest health management.