神农架3种针叶林土壤碳储量比较  

Soil Organic Carbon Storage of Three Coniferous Forests in Shennongjia Nature Reserve

作　　者：崔鸿侠[1] 肖文发[1] 黄志霖[1] 曾立雄[1] 潘磊[2] 庞宏东[2] 

机构地区：[1]中国林业科学研究院森林生态环境与保护研究所,北京100091 [2]湖北省林业科学研究院

出　　处：《东北林业大学学报》2014年第3期69-72,共4页Journal of Northeast Forestry University

基　　金：国家林业公益性行业科研专项(201104008);神农架本底资源调查项目(2011)

摘　　要：以神农架的马尾松林、华山松林和巴山冷杉林3种主要针叶林为研究对象。分析了不同针叶林土壤碳储量特征，以及土壤碳储量与乔木层平均胸径、灌木层生物量、地表层凋落物现存量等因子的关系。结果表明：3种针叶林0～60cm土壤总碳储量分别为57．79、116．07、170．62t·hm-2，巴山冷杉林土壤碳储量比马尾松林和华山松林分别高195．24％和47．00％，且3种林型之间差异达到显著性水平（P〈0．05）。3种针叶林土壤碳储量均随着土层的加深而减小，且土壤碳储量在各土层中差异也达到显著性水平。神农架地区主要针叶林土壤碳储量与平均胸径、凋落物现存量均具有极显著的正相关关系（P〈0．01），而与灌木层生物量相关性不显著（P≥0．05）。With three main coniferous forests of Pinus massoniana forest, Pinus amandii forest and Abies fargesii forest in Shen- nongjia Nature Reserve, an experiment was conducted to study the soil organic carbon （SOC） storage characteristic of three coniferous forests, and the relationship between soil carbon storage with mean diameter at breast height （DBH） , biomass of shrub layer and litter storage. The total SOC storage of three coniferous forests in 0-60 cm layer is 57.79 t·hm-2 , 116.07 t · hm-2 and 170.62 t· hm-2, respectively, and the SOC storage of A. fargesii forest is 195.24% and 47.00% higher than that of P. massoniana forest and P. amandiiforest, and the difference of SOC storage among three forest types is significant （ P〈0.05 ）. The vertical distribution and storage of SOC in 0-60 cm layer are in contrast. The difference of SOC storage in each layer is significant. There is a positive significant correlation between total SOC storage and mean DBH, and litter storage （P〈0.01）, while the total SOC storage is not correlated with shrub biomass （P≥0.05）.

关 键 词：针叶林 土壤碳储量 生物量 凋落物 神农架 

分 类 号：S714.5[农业科学—林学]