一、引言汤原县位于小兴安岭东南麓,这里曾是红松的故乡,森林资源丰富,经敌伪时期的破坏,加上森林火灾频繁,森林资源遭到很大破坏。五十年代后期,大搞更新造林,使这里形成了一个以人工林为主,人工林与天然次生林相结合的新型用材林基地。防止森林火灾是保护森林资源关键环节之一,而火又曾经对森林的形成和演替起过重要作用。因此,通过对火烧迹地的调查(调查方法从略)能科学地分析火的各种效应,估计火烧后的损失,并为开展计划烧除提供理论根据。 I. INTRODUCTION Tangyuan County is located in the southeastern foot of Xiaoxing’anling. It used to be the hometown of Korean pine trees. The forests are rich in resources and destroyed by the enemy during the pseudo-era. Coupled with frequent forest fires, forest resources have been greatly damaged. In the late fifties, the renovated afforestation was vigorously pursued so that a new type of timber forest base combining artificial plantation and natural secondary forest was formed here. Preventing forest fires is one of the key aspects of protecting forest resources, and fire once played an important role in the formation and succession of forests. Therefore, through the investigation of the burned area (the survey method omitted) can scientifically analyze the various effects of fire, estimate the loss after fire, and provide a theoretical basis for the planned burnout.