We analyzed the partitioning model of the biomass and carbon stock of 31 years old Dahurian Larch ( Larix gmelinii ( Rupr.) Rupr.) , their relationship with the growth trait , selection and primary selected provenance for biomass and car-bon sequestration .The stem ( bole wood and bark ) of L.gmelinii accounted for 74.17%of biomass and 62.50%of carbon aboveground .The correlation between felled and standing timber volume with biomass was highly significant .The sequence of carbon concentration for different organ was foliage>bark>branch>bole wood.The correlation coefficient between carbon concentration at diameter at breast height ( DBH) level and average of total aboveground was 0.615, with the significant level of 0.058.The models of Y=aDb Hc and Y=aDb are most suitable for estimating the biomass of L.gmelinii among all the al-lometry model with 5%of standard error.When the inventory data of provenances test is taken in the Y=aDb model, the provenance heritability of biomass and carbon stock is 0.36.The best provenance is Youhao , biomass and carbon stock ex-ceed the test average by 40.38%and 43.92%, and exceed the worst provenance (Zhongyangzhan) by 130.66%and 130.44%, respectively .%林木遗传改良的主要目的是选育生产力大的良种，但是随着木材市场和全球气候变化，林业生产更加关注生物量和碳汇功能。对帽儿山31年生兴安落叶松生物量和碳储量的分配模式，以及同生长性状相关性、异俗生长模型和遗传力进行分析，并初步选择了生物量和碳储量大的优良种源。兴安落叶松树干（含树皮）生物量、碳储量分别占地上部分总体的74．17％、62．50％，伐倒木、立木材积同生物量呈极显著相关，碳质量分数从大到小依次为：树叶、树皮、树枝、树干，胸径处碳质量分数与总体平均碳质量分数相关系数为0．615，显著水平为0．058。对于生物量估算各类异速生长模型中，Y＝aDb Hc 和Y＝aDb 两种模型较适宜兴安落叶松的生物量估算。两个模型对树干生物量和地上部分生物量预测误差小于5％，预测准确性较好。将实验林数据带入Y＝aDb 模型中，生物量与碳储量种源遗传力约为0．36，最优种源为友好林业局，生物量和碳储量分别比整体平均值高40．38％、43．92％，比最差中央站种源高130．66％和130．44％。
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