基于加拿大CBM-CFS3模型的江西庐山森林碳储特征研究

基于2009年庐山森林资源二类调查小班数据库和一类调查样地调查数据,利用CBM-CFS3模型的估算功能,估算江西庐山2009年森林生态系统碳储量。结果显示:庐山森林生态系统碳储量为6.4 T g(T=106t,t=106g),各主要森林类型之间因森林面积大小不同其碳储量差距很大;其中马尾松碳储量最大,占总碳储量的41.64%,国外松最小为2.18%。庐山森林生态系统平均碳密度为262.55 t/hm2,其中混交林碳密度最大为365.95 t/hm2,杉木碳密度最小为194.96 t/hm2。利用一类样地数据和平均生物量法得到庐山森林生态系统生物量碳密度为32.87 t/hm2,与模型计算结果 31.86 t/hm2基本一致。庐山总生物量碳库碳储量占庐山生态系统碳储量的12.47%,死有机质(DOM)碳库占比为87.53%,土壤碳库在整个生态系统中占有很大的比例为66.30%。

Forest Carbon Storage in Lushan Based on CBM-CFS3 Model

Based on the sub-compartment survey data of the forest resources of Lushan in the 2009,using the estimation fuction of CBM?CFS3 model,the carbon storage of the forest ecosystem in Lushan Jiangxi was es?timated.The results showed that:the carbon storage of Lushan forest ecosystem was 6.4 T g(T=106 t,t=106 g),owing to the difference in the forest land of the forest types the carbon storage amounts varied greatly;the car?bon storage of Pinus massoniana was the largest,accounting for 41.64% of the total,that of the foreign pine was the minimum(2.18%).The mixed forest had the maximum forest carbon density,accounting for 365.95 t/ hm2 , and the Cunninghamia lanceolata had the minimum,accounting for 194.96 t/ hm2 .With the permanent sites and the average biomass method,the biomass carbon density of the forest ecosystem of Lushan was obtained, accounting for 32.87 t/ hm2 ,similar to the result of the model—31.86 t/ hm2 .The total biomass carbon storage of the forest acosystem occupied 12.47% of the carbon storage of the ecosystem of Lushan,DOM of the carbon stock accounted for 87.53%.The soil carbon stock occupied a large part of the whole ecosystem’ accounting for 66.30%,a very important role in the forest ecosystem.