黑龙江省市县林区落叶松人工林碳储量成熟的研究

基于42株碳密度测定样木和黑龙江省各市县落叶松人工林固定样地（2006~2007年）生物量及含碳量调查数据，构建落叶松人工林单木碳储量相容性模型及林分碳储量预估模型，探讨落叶松人工林在不同立地下碳储量变化规律，确定碳储量成熟龄。结果表明：以碳储量直接作为因变量建立的单木碳储量相容性模型，拟合效果较好。在Ⅰ、Ⅱ、Ⅲ级立地条件下落叶松人工林碳储量成熟龄分别为37.8、39.2、42.5 a。研究认为，相同年龄落叶松人工林林分的碳储量随立地条件质量的提高而增加。相同立地条件下落叶松人工林林分的碳储量随年龄的增大而增加，林分平均碳积累量与连年碳积累量呈现先增大后减小的趋势，这表明林分的碳储量增长过程并不是一成不变的，其达到一定年龄后增长的幅度随年龄的增加而逐渐减少。

Carbon Storage Maturity of Larch Plantation in Heilongjiang Province

With the data of 42 sample trees of carbon storage and biomass investigation data of fixed sample plots of larch plantation from 2006 to 2007, we studied the carbon storage compatibility model of larch was builded and the regular of carbon storage in different site conditions. The model built by carbon storage directly had the higher precision. The larch plantation atⅠ, Ⅱ, Ⅲ level site conditions had a carbon storage maturity age of 37.8, 39.2 and 42.5 years. Research suggests that the carbon storage of same stand age rises with the increascent of site condition. The carbon storage of same site condition increased with the increase of the age. The average carbon accumulation and successive year carbon accumulation increased first, and then decreased. The increment of carbon would change after some years, and it would decrease with the increase of the age.