米老排人工林碳素积累特征及其分配格局  

Characteristics of carbon accumulation and allocation pattern in Mytilaria laosensis plantation

作　　者：明安刚[1,2] 贾宏炎[1] 陶怡[1] 陆毅[1] 于浩龙[1] 卢立华[1] 蔡道雄[1] 史作民[2] 

机构地区：[1]中国林业科学研究院热带林业实验中心,广西凭祥532600 [2]中国林业科学研究院森林生态环境与保护研究所,北京100091

出　　处：《生态学杂志》2012年第11期2730-2735,共6页Chinese Journal of Ecology

基　　金：林业公益性行业科研专项(201104006);"十一五"广西林业科技项目(桂林科字2009[08]);中国林业科学研究院热带林业实验中心主任基金项目(RL2011-02)资助

摘　　要：在生物量调查的基础上,对桂西南地区28年生米老排人工林生态系统的碳素积累特征及分配格局进行了研究。结果表明:米老排各器官碳含量在522.8～560.2g·kg-1,大小排序为:树叶(560.2g·kg-1)>树干(542.8g·kg-1)>树根(530.9g·kg-1)>树皮(530.8g·kg-1)>树枝(522.8g·kg-1);土壤碳含量以表土层最高,且随土层深度的增加而降低;米老排人工林乔木层碳贮量为147.90t·hm-2,其中,树干占乔木层碳贮量的63.72%;米老排人工林生态系统碳贮量为285.36t·hm-2,各组分的分配顺序为乔木层>土壤层>凋落物层>灌木层>草本层;植被层碳贮量为土壤层(0～100cm)的1.1倍。Based on the biomass survey,this paper studied the characteristics of carbon accumulation and allocation pattern of a 28-year-old Mytilaria laosensis plantation ecosystem in southwest Guangxi of South China.The carbon content in different organs of M.laosensis was in the range of 522.8-560.2 g·kg-1,with the order of leaf（560.2 g·kg-1） stem（542.8 g·kg-1） root（530.9 g·kg-1） bark（530.8 g·kg-1） branch（522.8 g·kg-1）.The soil carbon content was the highest in surface layer,and decreased with increasing depth.The carbon storage in tree layer was 147.90 t·hm-2,of which,stem accounted for 63.72% of the total.The total carbon storage of the M.laosensis plantation ecosystem was 285.36 t·hm-2,and the allocation of the carbon storage in different components was tree layer soil layer litter layer shrub layer herb layer,with the carbon storage in vegetable layer being 1.1 times of that in soil layer（0-100 cm）.The annual net carbon storage of the tree layer was 6.87 t·hm-2·a-1,which was dominated by the aboveground part.

关 键 词：米老排人工林 碳含量 碳贮量 分配格局 

分 类 号：S718.5[农业科学—林学]