天然次生林是发展林业生产的重要物质基础,进行天然次生林的调查分析,对于掌握森林资源消涨规律,正确确定采伐量,实现合理经营永续利用有着重要意义。根据调查分析资料可以制订切合实际的次生林经营方针和培育方向。1974年对凤城县宝山林场的次生林进行了全面清查,摸清了底数,取得了很多基本数据。1982年又进行了资源调查工作,取得了一定收效,初步 The natural secondary forest is an important material basis for the development of forestry production. Investigation and analysis of the natural secondary forest is of great significance in grasping the law of the fluctuation of forest resources, correctly determining the amount of harvesting and realizing the sustainable utilization of the reasonable management. According to the survey and analysis of information can develop realistic secondary forest management principles and nurturing direction. In 1974, a comprehensive inventory of the secondary forests of Baoshan Forest Farm in Fengcheng County was made, the bottom count was made and a lot of basic data were obtained. In 1982, another resource survey was carried out and achieved some success and preliminary results