嵩山南坡不同林龄栓皮栎人工林碳密度分布特征OA
Carbon density distribution characteristics of Quercus variabilis plantations with different stand ages on the southern slope of Songshan Mountain
[目的]研究不同林龄栓皮栎人工林植被层和土壤表层碳密度分布特征,为制定科学合理的森林经营措施提供依据.[方法]以嵩山南坡幼龄、中龄和近熟3个林龄阶段的栓皮栎人工林为对象,通过野外样地调查、样品取样和室内分析,在单株水平上分析了不同林龄各组成部分生物量、碳质量分数和碳储量分配特征,在林分水平上研究了不同林龄乔木层、灌草层、枯落物层和土壤表层碳密度分布特征.[结果]1)不同林龄栓皮栎各组成部分生物量和碳储量有显著差别,其中树皮和树干碳质量分数均显著高于根、枝和叶,表现出较高的碳储能力;2)幼龄林、中龄林和近熟林乔木层碳密度分别为 41.390、67.943和 93.085 t·hm-2;灌草层碳密度分别为 2.718、1.618和1.098 t·hm-2,其中幼龄林显著高于中龄林和近熟林;枯落物层和土壤表层碳密度在3个林龄间无显著差异.3)幼龄林、中龄林、近熟林的栓皮栎人工林总碳密度分别为66.164、95.473和120.476 t·hm-2,且各林龄乔木层和土壤层碳储量占林分总碳储量均在96%以上.[结论]嵩山南坡不同林龄栓皮栎人工林单株各组成部分之间,乔木层、灌草层、枯落物层和土壤层之间的碳密度均存在不同程度的差异特征,且整体上呈现随林龄增加而递增的趋势.
[Objective]This study aims to investigate the carbon density distribution characteristics of the vegetation layer and surface soil in Quercus variabilis plantations at different stand ages,providing a scientific basis for rational forest management strategies.[Method]Three stand age stages-including young,middle-aged,and near-mature Quercus variabilis plantations-on the southern slope of Songshan Mountain were selected as study objects.Field plot surveys,sample collection,and laboratory analy-ses were conducted.At the individual tree level,biomass,carbon mass fraction,and carbon storage allocation characteristics of different components were analyzed.At the stand level,the carbon density distribution of the tree layer,shrub-herb layer,litter layer,and surface soil were examined across dif-ferent stand ages.[Result]1)Significant differences were observed in the biomass and carbon storage of different components of Quercus variabilis trees at different stand ages.The carbon mass fraction in the bark and stem was significantly higher than that in the roots,branches,and leaves(P<0.05),indicating a strong carbon storage capacity.2)The carbon densities of the tree layer in young,middle-aged,and near-mature stands were 41.390 t·hm-2,67.943 t·hm-2,and 93.085 t·hm-2,respectively.The carbon density of the shrub and herb layer in these stands was 2.718 t·hm-2,1.618 t·hm-2,and 1.098 t·hm-2,respectively,with significantly higher values in young stands than in middle-aged and near-mature stands.However,there were no significant differences in carbon density of the litter layer and surface soil layer aross the three stand ages 3)The total carbon density of the young,middle-aged,and near-mature Quercus variabilis plantations was 66.164 t·hm-2,95.473 t·hm-2,and 120.476 t·hm-2,respectively.Across all stand ages,the carbon storage in the tree and soil layers accounted for over 96%of the total stand carbon storage.[Conclusion]In the Quercus variabilis plantations on the southern slope of Songshan mountain,carbon density exhibits distinct variations among the different components within individual trees,as well as across the tree layer,shrub-herb layer,litter layer,and soil layer.Overall,the carbon density shows an increasing trend with stand age.
孙红召;黄新峰;黄琳;王心楠;李思颖;闫东锋
河南省林业资源监测院,河南 郑州 450045河南省林业资源监测院,河南 郑州 450045河南省林业资源监测院,河南 郑州 450045河南农业大学林学院,河南 郑州 450046河南农业大学林学院,河南 郑州 450046河南农业大学林学院,河南 郑州 450046
农业科技
栓皮栎人工林生物量碳密度林龄
Quercus variabilis plantationbiomasscarbon densitystand age
《河南农业大学学报》 2026 (3)
443-452,10
河南省财政林草科技推广示范项目(30603263)河南省科技兴林项目(YLK202405)
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