喀喇沁旗旺业甸实验林场不同森林类型碳储量评估

Carbon Storage Assessment of Different Forest Types in Wangyedian Experimental Forest Farm,Harqin Banner

不同森林类型的碳汇计量与监测对区域碳汇能力的巩固提升具有重要意义。本研究采用标准地调查法对赤峰市喀喇沁旗旺业甸实验林场的天然次生林白桦(Betula platyphylla)、黑桦(Betula dahurica)、山杨(Populus davidiana)、蒙古栎(Quercus mongolica)、榛(Corylus heterophylla)、山杏(Prunus sibirica)和人工林华北落叶松(Larix gmelinii var.principis-rupprechtii)、油松(Pinus tabuliformis)、白杄(Picea meyeri)、樟子松(Pinus sylvestris var.mongolica)等林内乔木、灌木、草本、枯落物及土壤的碳含量、碳密度与碳储量进行调查研究。结果表明:旺业甸实验林场森林总面积23606.86 hm 2,总碳储量为4610165.83 t,平均碳储量为195.30 t·hm^(-2),其中乔木林面积22945.93 hm 2,碳储量为4497646.08 t,平均碳储量为196.01 t·hm^(-2),灌木林面积660.93 hm 2,碳储量为112519.74 t,平均碳储量为170.24 t·hm^(-2);山杨的碳密度最高,达247.59 t·hm^(-2),以幼龄林为主的针叶混交林最低,仅为148.24 t·hm^(-2);阔叶混交林对碳储量贡献最大,达29.86%,油松林、华北落叶松林、白桦林分别为20.58%、14.46%、13.85%。

Carbon accounting and monitoring in different forest types is very important to strengthen and upgrade the regional carbon sink capacity.By use of the standard survey method,in Wangyedian Experimental Forest Farm,Harqin Banner,Chifeng City,the arbors,shrubs,herbs,litters and soil carbon content,carbon density and carbon storage were investigated in natural secondary forest of Betula platyphylla,Betula dahurica,Populus davidiana,Quercus mongolica,Corylus heterophylla,Prunus sibirica and artificial forest of Larix gmelinii var.principis-rupprechtii,Pinus tabuliformis,Picea meyeri,Pinus sylvestris var.mongolica.The results showed that the total forest area of Wangyedian Experimental Forest Farm was 23606.86 hm 2,the total carbon storage was 4610165.83 t,the average carbon storage was 195.30 t·hm^(-2),among them,the area of arbor forest was 22945.93 hm 2,the carbon storage was 4497646.08 t,the average carbon storage was 196.01 t·hm^(-2),the area of shrub forest was 660.93 hm 2,the carbon storage was 112519.74 t,the average carbon storage was 170.24 t·hm^(-2).The carbon density of Populus davidiana was the highest,reaching 247.59 t·hm^(-2),the carbon density of coniferous mixed forest dominated by young trees was the lowest,only reaching 148.24 t·hm^(-2).The broad-leaf mixed forest gave the greatest contribution to carbon storage,reaching 29.86%,which Pinus tabuliformis forest,Larix gmelinii var.principis-rupprechtii forest and Betula platyphylla forest was 20.58%,14.46%and 13.85%,respectively.