摘要
采用量热法对长白山阔叶红松林红松种群热值进行研究。结果表明:红松不同器官间的热值差异很大,多年生枝,1、2年生枝,多年生叶和1、2年生叶分别与皮、主根、干、侧根之间的差异显著(P<0.05)。多年生枝,1、2年生枝与侧根之间的差异极显著(P<0.01)。从全株植物的平均热值角度分析,枝>叶>皮>干>根,对于枝和叶,多年生的热值要高于1,2年生的热值,对于根来说,主根要高于侧根。不同径级间的热值差异极显著(P<0.01),随径级增加而呈明显的波浪形分布。不同季节的红松热值不同,秋季热值高于春季。高海拔藓类云冷杉红松林红松的热值高于阔叶红松林红松的热值,以侧根热值差距最大,差值为3471J·g-1,树干的热值差距最小,差值仅为1075J·g-1。
The caloric values were used to study the Pinus koraiensis population in broad-leaved Korean Pine forests in Changbai Mountain. The results suggested that various organs of Pinus koraiensis were considerably different in caloric values. The caloric values of old branches,one-or-two-year branches,old leaves and one-or-two-year leaves differed greatly from that of barks,root stumpages,stems and lateral roots （ P 0. 05）. The caloric values of old branches and one-or-two-year branches differed significantly from that of lateral roots （P 0. 01）. Analysis on the average caloric value of whole plant showed a rank of branch leaf bark stem root. Caloric values of old branches and leaves were higher than that of one-or-two-year branches and leaves. The caloric value of root stumpages was higher than that of lateral roots. Caloric values varied significantly with tree diameter class and a wave-shaped distribution was found as increased in diameter-class. Pinus koraiensis in different seasons differed in caloric values. A higher value was found in autumn than in spring. Caloric values of Pinus koraiensis in moss,spruce-fir,Pinus koraiensis forest on high altitude were higher than Pinus koraiensis in broad-leaved Korean Pine forests. The biggest difference was found in lateral roots,the margin being 3 471 J·g -1,and the smallest difference was found in stem,the margin only 1 075 J·g -1.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2010年第8期15-21,共7页
Scientia Silvae Sinicae
基金
吉林省重大科技发展计划项目(吉科合字20075012)
关键词
红松
热值
器官
阔叶红松林
径级
Pinus koraiensis
caloric values
organ
broad-leaved Korean Pine forests
diameter-class
