OALib Journal期刊
黑龙江省市县林区落叶松人工林碳储量成熟的研究
DOI: 10.7525/j.issn.1673-5102.2015.04.019
Keywords: 落叶松 ,人工林 ,平均碳积累量 ,连年碳积累量
Abstract:
？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、42.5a。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。
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