孟家岗红松母树林疏伐密度效应分析  

Effects of different thinning intensity on seed production stands of Pinus koraiensis in Menjiagang Forestry Station

作　　者：侯聪[1] 魏志刚[1] 张力杰[1] 蔡保民 

机构地区：[1]东北林业大学林木遗传育种国家重点实验室,哈尔滨150040 [2]黑龙江省种苗管理总站

出　　处：《林业科技开发》2014年第1期41-46,共6页China Forestry Science and Technology

基　　金：国家科技支撑计划课题(编号:2011BAD37B02);黑龙江省攻关课题(编号:GA09B204-01)

摘　　要：对黑龙江省孟家岗林场40年生红松母树林300、450、600、700和1 300株/hm2(对照)疏伐处理后14个性状的进行统计分析,结果表明,疏伐处理对14个性状均产生极显著影响。除枝下高外,其余性状均值均有较大程度的提高,其中单株结实质量、树冠体积和公顷结实质量分别提高了47.79%、33.6%和28.65%。此外,不同性状之间存在极为复杂的相关性。聚类分析和主分量分析将上述性状分成3大类,分别代表了树冠、种子品质和结实性状。这3类性状在各主成分上得分值的加权和比较分析表明,孟家岗林场42年生红松母树林疏伐抚育最佳密度是450株/hm2。Through statistical analysis on fourteen traits of old seed production stands of Pinus koraiensis with density 300, 450, 600, 700 and 1 300 individuals/hm2 （ this thinning density as control） after thinning forty years in Menjiagang Forest Farm, the results showed that the thinning exerted significant influences on all traits. Except the branch height, the average values of other traits were higher than those before thinning, for example, the bearing yield per tree, crown volume and bearing yield per hectare increased 47.79%, 33.6% and 28.65% , respectively. Moreover, the complex relativity among fourteen traits was presented. All traits could be divided into three categories which represent crown, seed quality and bear- ing trait by means of cluster analysis and principal component analysis. After compared the weighted sum of each principal component score of three categories traits, the best thinning intensity for forty years old seed production stands of P. ko- raiensis in Menjiagang Forest Farm was 450 individuals/hm2.

关 键 词：疏伐密度 红松 母树林 结实量 

分 类 号：S791.257[农业科学—林木遗传育种]