摘要
对广西南宁良凤江国家森林公园27年生的观光木生物量和生产力进行测定研究,分析观光木人工林不同径阶生物量的分配规律和林分生物量、生产力,并根据林木各器官之间的相关关系,建立D2H与各器官生物量的估测模型。结果表明,观光木生物量随着径阶的增大而增大,不同径阶间差异显著;通过不同径阶D2H拟合的生物量估算模型,拟合精度高,可用于实际生产对该林分生物量的估算;观光木林分生物量为102.57 t/hm2,其中乔木层占了87.07%,林下灌木层、草本层及腐殖质层生物量分别为8.61 t/hm2、1.83 t/hm2、2.82 t/hm2。观光木人工林林分生产力为7.4 t/(hm2.a),具有较高的净生产力。
This study was to explore the biomass and the productivity of a 27 year old Tsoongiodenron odorum plantation,analyze the biomass distribution of the different diameter grades,stand biomass and the productivity,and establish estimation models between D2H and biomass of different organs according to the correlations among different organs.The results showed that biomass of Tsoongiodenron odorum increased along with the increasing of diameter grades.The accuracy of the biomass estimating model established by the D2H of different diameter grades was high.The model could be used to estimate the biomass in the actual production,the stand biomass of Tsoongiodenron odorum plantation was 102.57 t/hm2.Among them,the biomass of tree layer accounted for 87.07%,the biomass of shrub layer,herb layer and humus layer was 8.61 t / hm2,1.83 t / hm2and 2.82 t/ hm2 respectively.The productivity of Tsoongiodenron odorum plantation was 7.4 t / hm2,indicating a relatively high net productivity.
出处
《林业科技开发》
2011年第6期65-68,共4页
China Forestry Science and Technology
基金
广西林业厅科学基金资助项目"观光木
山白兰人工林生长特性及木材材性研究"(编号:桂林科字[2009]第22号)
关键词
观光木
人工林
生物量
生产力
Tsoongiodenron odorum
plantation
biomass
productivity
