摘要
对广西六万林场31年生柳杉人工林的生物量和生产力进行研究,并建立柳杉不同器官的生物量模型。结果表明:不同径阶单株平均木生物量随着径阶的增大而增大,且不同径阶间生物量差异显著;所拟合的各器官生物量的回归估测模型的决定系数R2值均在0.983以上,达0.01显著水平;不同器官生物量大小依次为:树干>枝条>根蔸>树叶>枯枝>粗根>细根>中根;林分乔木层总生物量达到了239.03 t.hm-2,其中树干的生物量达到了120.24 t.hm-2,占全株的50.30%;林分的年净生产力达7.89 t.hm-2.a-1。
This paper studied the biomass and productivity of 31-year-old standing forest of Cryptonmeria fortune Hooibrenk.in Liuwan Forestry Station of Guangxi Province.Sample tree biomass was investigated according to different diameter grade.Results showed that the individual biomass of average tree increased with the increase of diameter grade,and biomass with different diameter grade was significantly different;R2value was over 0.983 and reached 0.01 evident level;Tree biomass of different organ ranged in order from strong to week：trunk branch root stump leave dead branchbig rootsmall rootmiddle root;And the total biomass of tree layer reached 239.03 t·hm-2,the trunk biomass was 120.24 t·hm-2,accounting for 50.30% of the whole plant;The annual net productivity was 7.89 t·hm-2·a-1.
出处
《福建林业科技》
2011年第4期1-5,共5页
Journal of Fujian Forestry Science and Technology
基金
"十一五"广西科技项目[桂林科字(2009)第23号]
六万林场柳杉大径材经营技术及木材综合利用研究项目
关键词
柳杉
人工林
生物量
生产力
Cryptonmeria fortune Hooibrenk
plantation
biomass
productivity
