采用胸径木芯与伐倒木取样方法,对24年生长白落叶松优树子代测定林14个处理的生长性状、木芯材质性状、解析木材质性状及其制浆造纸特性进行了研究,结果表明:生长性状、木芯基本密度、木芯管胞性状均存在丰富的变异;家系间生长性状差异极显著;木芯基本密度、木芯管胞性状差异显著,家系遗传力在0.56~0.80之间;解析木基本密度、早材微纤丝角、管胞长度、早材壁腔比、木质素、阿拉伯糖含量、抗张强度、撕裂度等差异极显著,家系遗传力在0.64~0.86之间;晚材率、管胞长宽比、综纤维素含量等差异显著,家系遗传力在0.51~0.61,家系水平的材性改良潜力较大。生长性状与木芯管胞长度呈极显著正相关,与木芯基本密度、管胞长宽比相关不显著;木芯基本密度、管胞长度、管胞宽度以及管胞长宽比与解析木相应性状呈极显著正相关关系,且回归模型较为理想,可以利用胸径木芯各性状值预测其单株值,间接选择和评价纸浆材优良家系。通过生长性状、木芯基本密度和木芯管胞长宽比综合分析选出166、169为优良家系,根据解析木生长、材质以及纸张物理性状选出的优良家系与其结果一致。优良家系材积、木芯基本密度和木芯管胞长宽比的遗传增益(超过对照)分别为48.34%(38.80%)、14.01%(3.63%)和19.89%(6.42%)。

以东北林业大学帽儿山试验林场31年生长白落叶松种源试验林为研究对象。首先对林木碳储量研究中非破坏性取样方法进行探究，通过对比树干1.3 m处木芯样品含碳率与树干平均含碳率数据，发现二者存在较强的线性关系，利用回归分析计算出直线方程y=0.908 2x+4.379 4，R2=0.842 5，方程拟合程度达到理想水平，利用1.3 m处木芯样品含碳率推算树干平均含碳率方法可行。对不同种源长白落叶松的生长、材性、含碳率、干材生物量、碳储量等性状进行测定，结合方差分析、多重比较、相关分析等数理统计方法，最终筛选出生长优良，固碳能力强的种源。结果显示：干材生物量与碳储量存在较丰富的变异，平均变异系数分别为21.33%和21.30%。相关分析结果显示，碳储量与生长性状、干材生物量呈极显著正相关，与综纤维素含量和木质素含量相关不显著。通过方差分析与Duncan法多重比较，最终选择出小北湖与白刀山两个种源为高固碳能力种源。小北湖与白刀山种源单株干材碳储量分别为74.38 kg和69.27 kg，二者平均值高出总平均值27.83%，比对照CK高出54.45%。以现有试验林为标准，若选择小北湖种源，则每公顷固碳27 297.46 kg，比利用碳储量最小的露水河种源造林每公顷固碳量高47.85%。

This research compared the transcriptomes of four different tissues of Pinus koraiensis by using RNA-seq technique and a lot of differentially expressed unigenes were obtained. A total of 21.3 GB of data was obtained and 41 476 expressed unigenes were received after assembling. Through GO and COG classification, the commented and transcribed sequences were classified into 24 or 56 functional categories, which referred to many biochemical processes such as material and energy metabolism, signal transduction, transcriptional regulation and defense reaction. Through pathway enrichment analysis, the pathways associated with grease synthetic fatty acid biosynthetic and terpenoids synthesis were found. Two unigenes of metabolic pathways in KEGG database were compared and 16 key enzyme genes of fatty acid synthesis in other species homologous and 34 key enzyme genes of terpenoid biosynthetic pathway were obtained. By high-throughput sequencing and bioinformatics research, a large number of Pinus koraiensis transcriptome unigenes was obtained. This research provides references for the research on the genes related to secondary metabolites synthesis in Pinus koraiensis.