森林病虫害是无烟火灾,不仅影响绿化景观安全,还会影响人民生活和社会安定,影响对外经济,甚至演化为国际问题。长期以来,对森林病虫害防治重要性的认识并未随着绿化发展而提高,营林管理滞后,“重造轻管”,以营林为基础得不到保障,大大降低了森林健康水平,或削弱自然调控能力、或受到伤害和威胁越来越大。森林病虫害严重是生物多样性降低的反映,标志生态环境风险加大。营造健康森林,就是营造树种多样性、生物多样性,不仅关系到病虫为害风险,而且直接关系到生态环境战略安全,因此建设和 Forest pests and diseases are smokeless fires, which not only affect the safety of greening landscapes but also affect people’s lives and social stability, affect their foreign economies and even evolve into international problems. For a long time, the awareness of the importance of controlling pests and diseases in forests has not risen with the development of afforestation and management of lakes has lagged behind. Therefore, “rebuilding light mains” can not be guaranteed on the basis of silviculture and greatly reduces the level of forest health or Weaken the ability of natural regulation, or be harmed and threatened more and more. Serious diseases and pests of forest are the reflection of the decrease of biodiversity, which indicates that the risk of ecological environment is increased. To create a healthy forest is to create species diversity and biodiversity, not only to the risk of pests and diseases, but also to the strategic security of the ecological environment. Therefore, the construction and