大兴安岭兴安落叶松林林隙更新研究  

Daxing′anling Larix Regeneration of Pinus korariensis Forest Gap

作　　者：张最最[1] 铁牛[1] 张秋良[1] 席青虎 刘文军[3] 

机构地区：[1]内蒙古农业大学林学院,呼和浩特010019 [2]呼伦贝尔市林业局,内蒙古呼伦贝尔021000 [3]鄂尔多斯市造林总场,内蒙古达拉特旗014323

出　　处：《林业资源管理》2011年第2期72-77,共6页Forest Resources Management

基　　金：国家自然科学基金(31070566)

摘　　要：研究了大兴安岭地区不同林型林隙的更新密度、边缘木数量及形成原因,结果表明：1）林隙一般由11~24株落叶松、白桦所形成,平均为16.94株;形成方式主要有立枯、折干和拔根倒,11.8%为折干,35.3%为立枯,41.2%为拔根倒。2）林隙所在坡位中58.9%为中下和下坡位,41.1%为中上坡位。3）在杜香-落叶松林、草类-落叶松林和藓类-落叶松林更新密度所受到的制约因子不同,杜香-落叶松林的林隙更新主要受坡度的影响,草类-落叶松林的林隙更新主要受长短轴比的影响,藓类-落叶松林的林隙更新主要受边缘木数量的影响。This paper studies the regeneration density of different types of forest gaps,the number and causes of the edge of wood.The results showed that gaps are generally formed by 11 to 24 larch and birch trees with an average number of 16.94 trees,which includes standing dead trees,broken trees and uprooted trees.Of those trees,11.8% are broken trees,353% dead standing trees and 41.2% uprooted trees.Gap where the slope was lower in 58.9% and slope position,41.1% were in the upper slope.Ledum leaves in the forest,grass and moss larch forest regeneration density by the limiting factors are different.In the larch forest Ledum gap regeneration is mainly affected by the impact of slope,grass leaf pines,mainly by the length of the gap regeneration of the axis ratio,moss larch forest gap edges of wood mainly by the number of edge trees.

关 键 词：兴安落叶松 林型 更新密度 林隙更新 

分 类 号：S718.5[农业科学—林学] S791.22