甘肃小陇山锐齿栎林生物量及其碳库研究

为准确估计甘肃小陇山锐齿栎林的碳库大小,根据513块标准地和178株标准木资料分析,建立了锐齿栎的各器官生物量回归方程,对其生物量进行了测定和研究;并应用干烧法对锐齿栎林下14种灌木、10种草本植物的不同器官和林分的枯落物有机含碳率进行了测定,同时利用生物量标准地资料对该林分的乔木层平均含碳率进行了分析;估算了锐齿栎林的碳库大小.结果表明:小陇山林区锐齿栎林分生物量为84.047 2 t/hm2;锐齿栎的器官平均含碳率为0.465 3,其林分的乔木层平均含碳率为0.467 6;小陇山锐齿栎林的现存碳贮量为39.222 5 t/hm2.

Forest biomass and carbon storage of Quercus aliena var.acuteserrata stand-types in Xiaolong Mountains,Gansu Province.

In order to accurately estimate the carbon storage of Quercus aliena var.acuteserrata stand-types in Xiaolong Mountains,Gansu Province,mensuration and research on forest biomass of the stand-types were carried out.Based on the data from 513 sample plots and 178 sample stems,regression equations of each organs of Q.aliena var.acuteserrata were simulated.Then the tissues' carbon content rates were measured on each organs of 14 shrub species,10 herbaceous plants and the forest litters under Q.aliena var.acuteserrata tree species by dry combustion method.Based on the biomass data of stand sample plots,the mean carbon content rates of the tree layer of Q.aliena var.acuteserrata stand-types had been calculated.In the end,the carbon storage of Q.aliena var.acuteserrata forests was estimated.The results showed that: 1) the average forest biomass of Q.aliena var.acuteserrata forests in Xiaolong Mountains was 84.047 2 t/hm~2.2) the mean tissues' carbon content rate of Q.aliena var.acuteserrata species was 0.465 3,and that of tree stratum was 0.467 6.3) the carbon storage of Q.aliena var.acuteserrata stand-types in Xiaolong Mountains was 39.222 5 t/hm~2.