长白山林区主要树种含碳率及其差异分析

On Carbon Sequestration Rates and Differences of Main Tree Species in Changbai Mountain Forest Area

为准确估算区域森林碳储量,应用湿烧法测定长白山林区14个主要树种不同器官的有机含碳率,利用分析树种的单木生物量方程计算林木全株的平均含碳率.结果表明:14个树种的全株平均含碳率分别为色木槭44.56%、山杨48.77%、紫椴49.44%、春榆38.59%、风桦49.76%、白桦45.08%、怀槐45.53%、水曲柳45.37%、胡桃楸45.38%、蒙古栎48.40%、臭冷杉52.20%、樟子松50.26%、落叶松50.79%、红松53.39%,表现为针叶树种含碳率高于阔叶树种;树种全株加权平均含碳率与其器官的平均含碳率相比存在一定差异,差值在1.39%以内;各树种不同器官含碳率变化范围介于33.98%~53.98%,整体表现为干>枝>根>叶;种内不同器官的变异系数介于1.10%~7.98%,器官含碳率的种间变异系数介于7.60%~11.29%.进一步进行多重比较表明:同一树种不同器官的含碳率差异显著性水平不同,没有一定的规律;在器官含碳率水平上,部分树种间存在一定的相似性.

In order to estimate the carbon storage of regional forest accurately,the organic carbon sequestration rate of different organs of14main tree species in Changbai Mountain forest area was determined by wet-burning method.Meanwhile,the single-tree biomass equation of each tree species was used to determine the average carbon content.The results show that average carbon contents of the whole plant of the14species were44.56%,48.77%,49.44%,38.59%,49.76%,45.08%,45.53%,45.37%,45.38%,48.40%,52.20%,50.26%,50.79%,53.39%in Acer mono,Populus davidiana,Tilia amurensis,Ulmus japonica,Betula costata,Betula platyphylla,Maackia amurensis,Fraxinus mandshurica,Juglan mandshurica,Quercu mongolica,Abies nephrolepis,Pinus sylvestris,Larix gmelinii and Pinus koraiensis,and indicate that the carbon content in coniferous species is more than that in broad leaf species.The difference between the weighted average carbon content of whole plant species and the average carbon content of their organs is within1.39%.The variation of carbon content in different organs of each species ranged from33.98%to53.98%,and the overall performance was stem>branch>root>leaf.The coefficient of variation of different organs within the species ranged from1.10%to7.98%,and the coefficient of variation of carbon content in organs ranged from7.60%to11.29%.Further multiple comparisons showed that the carbon content of different organs of the same species differed significantly in significance level and had no certain regularity.There was a certain similarity between some species of organs at the carbon content of organs.