小兴安岭采伐迹地天然更新白桦混交林建群种碳汇特征  

The Characteristics of Betula Mixed Forest with Natural Regeneration on Cutting-Blank

作　　者：崔崧 刘延滨 黄金龙 王承义 CUI Song(Forestry Scientific Institute of Heilongjiang Province,Harbin 150081)

机构地区：[1]黑龙江省林业科学研究所,哈尔滨150081 [2]黑龙江省丰林国家级自然保护区管理局,哈尔滨153033

出　　处：《林业科技》2019年第5期18-20,共3页Forestry Science & Technology

基　　金：国家重点研发计划“东北森林生态系统保护与恢复技术集成与示范”(2016YFC0500308-02)

摘　　要：以小兴安岭采伐迹地自然更新白桦混交林为研究对象,通过生物量模型、碳含量模型估算出建群种碳汇量,并对林分建群种碳汇特征进行了分析。结果表明,小兴安岭森林皆伐林地自然更新演替后形成的白桦林主要建群种中数量最多的是白桦,其碳汇贡献率也最高;落叶松的个体平均总生物量和树干生物量最大,但在整个林分中的总生物量水平较低,而单株生物量最小的白桦林分整体生物量最大;树干生物量与总体生物量比例最高的是白桦和落叶松;林分单位面积含碳量的排序为白桦、毛赤杨、落叶松;落叶松总体碳汇贡献率最低,但个体碳汇量及树干占比都很高,可以在保证整体结构近自然化的情况下,通过造林的方式提高落叶松的比例来增加林分的碳汇。The carbon sink characteristics of betula mixed forest with natural regeneration on cutting-blank are studied with biomass model and carbon content rates.Conclusions:The most constructive species of betula bixed forest with natural regeneration on cutting-blank is Betula,its carbon contribution is also the most.The average biomass and stem biomass of larch are most,but the whole biomass is very small,the largest whole biomass is birch.The largest stem biomass/whole biomass are birch and larch.The biomass in unit area were sorted as follow birch,alnus sibirica,larch.The larch with the lowest whole biomass have the highest biomass/whole,the carbon sink can increased through larch afforestation.

关 键 词：采伐迹地 白桦混交林 碳汇特征 

分 类 号：S728[农业科学—林木遗传育种]