摘要
根据1976年播后出苗率和成苗率调查,1987—1990年油松毛虫灾害对油松林分的影响,及1991年和2003年丁营飞播区森林资源清查资料,通过调查数据对比分析,丁营飞播区播后林分变化规律,符合近自然林业发展规律。面向整个丁营飞播区生态系统,依据近自然林业经营理念,研究丁营飞播区经营管理措施,实现林业经营目标的最大化。
In this paper, data or information from the seedling emergence rate and plantlets survival rate in 1976, the effects of pine caterpillars damages to the stands during 1987 to 1990, and the data from the national forest continuous inventory conducted respectively in 1991 and 2003 were used to study the changes of forest stands in Dingying afforested region. Resuhs showed that its changes were in accordance to that of natural forests. Starting from constructing the ecosystem in the whole region,management countermeasures to the forests are put forward according to the close-nature forest theory in order to realize the maximum objectives.
出处
《河北林果研究》
2009年第4期405-408,共4页
Hebei Journal of Forestry and Orchard Research
