摘要
山坡下部和溪旁的华山松林,天然更新良好,草类、灌木华山松林次之,峭壁华山松林和竹子华山松林最差。采伐迹地上的更新幼苗幼树组成复杂,非目的树种占有一定比重。此外,分析了采伐方式、集材方式、林分郁闭度、枯落物厚度,土壤厚度,地形、下木及活地被物与华山松天然更新的关系,提出经营利用秦岭林区华山松林应注意的问题。
Describes the natural regeneration of various types of pinus armandii forests in Qinling mountain forest region. Natural regeneration at the mountain foot and the stream side was much better than that of the mixed forests with grasses or shurbs. Regeneration of the forests a.t cliffs or the forest mixed with bamboos was underdeveloped. The regenerated saplings and seedlings on cleared areas were complicated with certain proportion of. non-objective tree speices. The relationships between natural regeneration and cutting and skidding system, canopy closure, litter layer thickness, the depth of soil layers, topography, understorey or ground vegetation were analyzed. Considerations for the management and utilization of the forests were also suggested.
出处
《西北林学院学报》
CSCD
1991年第1期9-15,共7页
Journal of Northwest Forestry University
关键词
华山岭
天然更新
林型
采伐迹地
natural regeneration
forest type
Qinling mountain forest region
cutting area
pinus armandi
ecological condition
