不同密度杉木林生态系统各组分能量现存量结构  

Structure of Different Components Energy Storage in Different Density of Chinese Fir Plantations

作　　者：谢建文[1] XIE Jianwen(Xiqin Experimental Forest Farm of Fujian Agriculture and Forestry University,Nanping 353001,China)

机构地区：[1]福建农林大学西芹教学林场,福建南平353001

出　　处：《北华大学学报（自然科学版）》2020年第6期807-811,共5页Journal of Beihua University（Natural Science）

基　　金：福建省科技厅引导性项目(2018N0001).

摘　　要：以不同密度(1800、3000、4500株/hm^2)杉木林为研究对象,分析不同组分间能量现存量差异及其分配率.结果表明:随着密度的增加,杉木林树干、树皮、宿留枯死枝、根及凋落物能量现存量呈逐渐增加趋势,林下植被呈逐渐降低趋势;杉木林树干、树根、宿留枯枝、鲜叶、凋落物能量现存量与密度呈极显著正相关关系,林下植被能量现存量与密度呈极显著负相关关系.Chinese fir forests with different densities(1800,3000 and 4500 plants/hm^2)were taken as the research objects,the differences of the energy inventory amounts of different components and their distribution rates were analyzed.The results showed that the energy inventory of Chinese fir forest trunk,bark,dead branches,roots and litter showed a gradual increase trend with the increase of density,while the energy inventory of understory vegetation showed a gradual decrease trend.The energy reserves of Chinese fir forest trunks,roots,persistent litter,fresh leaves,and litter had a highly significant positive correlation with density,while the understory vegetation energy reserves had a highly significant negative correlation with density.

关 键 词：林分密度 杉木人工林 生态系统组分 能量现存量 能量分配 

分 类 号：S718.5[农业科学—林学] Q948.15[生物学—植物学]