小兴安岭天然更新针阔混交林碳汇结构特征的研究  

The Carbon Sink Characteristics of Mixed Forest with Natural Regeneration of Xiao Hingan Mountains

作　　者：崔崧 刘滨凡[2] 王明强[2] Cui Song;Liu Binfan;Wang Mingqiang(Forestry Scientific Institute of Heilongjiang Province, Harbin 150081;Forestry Academy 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]黑龙江省林业科学院,哈尔滨150081

出　　处：《中国林副特产》2018年第6期1-4,共4页Forest By-product and Speciality in China

基　　金：黑龙江省省属科研院所基本科研业务费(201703)

摘　　要：对天然更新针阔混交林群落学特征进行分析,结合生物量模型估算出的碳汇量,对小兴安岭天然更新针阔混交林碳汇结构特征进行研究。结果表明,经过50年无人为扰动的天然更新演替,混交林的结构状态还是以阔叶树种为主,针叶树种比例低、重要性差;对群落碳汇作用贡献最大的仍然为先锋树种白桦(12693.88kg/hm^2),但水曲柳(7175.95kg/hm^2)碳汇能力的提升说明群落在向着有利于针阔混交的方向发展;水平结构上白桦和色木槭在8～10cm,水曲柳在10～12cm径级下碳累积量达到最大,之后呈现一定的下降趋势,其余树种呈现持续的上升趋势;垂直结构上,优势种总固碳量随着树高级的升高均呈现上升的趋势,白桦在14～16m树高级达到碳汇量最大后出现下降的趋势;冠层投影面积分级下碳汇积累量规律不明显。The carbon sink characteristics of mixed forest with natural regeneration are studied with carbon sink based on biomass model and carbon content rates.The results show that the mixed forest with50years natural generation is also based on more broad-leaved species and less coniferous species,and the importance of coniferous species was poor.The most carbon sink species in the community is birch(12693.88kg/hm^2),and the carbon sink of ash(7175.95kg/hm^2)increased means the structure of the community changed to be beneficial to mixed forest.On the horizontal structure,the birch and the mono maple gained most carbon sink in8-10cm diameter class,the ash in10-12cm diameter class gained most,then the total carbon sink was declining.Other species kept rising.In vertical structure,most species kept rising,the birch in14-16m height class gained most carbon sink then became low.The Characteristics of carbon sink with projective cover degree class was not obvious.

关 键 词：天然更新 针阔混交林 碳汇特征 

分 类 号：S7511[农业科学—森林经理学]