甘肃省洮河林区亚高山暗针叶林天然更新规律的调查

• 作 者: 曲永宁
• 机 构: 甘肃农业大学林学系,
• 出 处: 甘肃农大学报
• 发表日期: 1984年01期
• 关键词: 天然更新 亚高山暗针叶林 林分类型 森林类型 样地 云杉林 林窗 森林更新 活地被层 活地被物

本项调查是采用常规方法,按不同立地特征和林分类型,进行天然更新调查,通过1046块样地的更新效果分析,洮河林区云、冷杉天然更新中等和良好的占79%,更新效果较好。并从林地类型、森林类型、郁闭度、林龄、地形等方面,分析了天然更新的规律,找出了影响天然更新成败的关键因素,为合理经营森林,实现永续利用,提供科学的依据。

The survey is based on different site characteristics and types of forest types. The survey was conducted through a natural update survey of 1046 plots. The results showed that the natural regeneration of clouds and fir forests was moderate and good, accounting for 79% of the total. The effect is better. And analyzed the laws of natural renewal from the aspects of forestland types, forest types, canopy density, age and topography, and found out the key factors that affect the success or failure of natural regeneration. In order to rationally manage forests and achieve sustainable utilization, in accordance with.