豫南18a生杉木林生态系统碳库及其分配特征  

Carbon storage and distribution in a 18-year-old Cunninghamia lanceolata forest ecosystem in South of Henan

作　　者：邓华平[1] 朱秀红[2] 茹广欣[2] 耿赓[3] 王正超[1] 张龙冲[2] 

机构地区：[1]中国林业科学研究院,北京100091 [2]河南农业大学林学院,河南郑州450002 [3]河南省信阳市南湾实验林场,河南信阳464000

出　　处：《河南农业大学学报》2010年第5期513-517,共5页Journal of Henan Agricultural University

基　　金：国家"十一五"科技支撑计划课题(2006BAD07B07)

摘　　要：对豫南18 a生杉木林生态系统的生物量、碳贮量及其空间分布特征进行了研究.采用分层切割法和相对生长方程计算乔木层生物量和林下植被生物量,C,N元素分析仪测定碳含量.结果表明,18 a杉木林生态系统的总生物量平均为139.5 t.hm-2.其中乔木层生物量占91.1%;杉木林生态系统总碳库为135.14 t.hm-2,其中植被总碳贮量为69.84 t.hm-2,土壤有机碳库为65.30 t.hm-2.乔木层碳库占生态系统碳库的47.03%,灌木层占1.97%,草本层占0.36%,现存凋落物层占2.32%,矿质土壤层碳库占生态系统碳库的48.32%.The carbon storage and its distribution of an 18-year-old Cunninghamia lanceolata forest ecosystem at Nanwan Experiment Forest Farm in Xinyang of Henan Province was studied.The methods of allometric dimension analysis and sampling harvest were used to estimate the biomass of tree,shrub and herbage layers respectively.Carbon concent rations of plant and soil samples were determined using an ELEMEN TAR Vario EL III CN analyzer.The results showed that the total biomass was 139.5 t·hm-2,the distributing sequence of the biomass of the forest ecosystem was： arbor layer（91.1%）shrub layer（4.1%）Standing litters（4.0%）herb（0.1%）.The total organic carbon storage amounted to 135.14 t·hm-2 in Cunninghamia lanceolata forest ecosystem,whose vegetation layer stored 69.84 t·hm-2.Carbon storage of tree,shrub,herb,standing litter and soil stored were 32.59,2.67,0.48,3.14 and 65.30 t·hm2 respectively.Allocation of carbon pool to composing forest ecosystem accounted to 47.03%,1.97%,0.36%,2.32% and 48.32 % respectively.

关 键 词：杉木林 碳贮量 碳分配 

分 类 号：S718[农业科学—林学]