采用机载LiDAR技术对江苏连云港南云台林场杉木人工林进行林分因子调查,基于调查结果和含碳系数,运用生物量方程法估测生物量和碳储量,旨在为杉木林经营管理和开展固碳增汇提供依据。结果表明:1)y=4.6642e^0.1237x(R²=0.8012)为胸径优选反演模型;2)杉木人工林碳储量随径级的增大而不断增加,其地上碳储量(4.31~72.79 t/hm²)显著高于地下碳储量(1.17~21.44 t/hm²),在全株碳储量(5.48~94.23 t/hm²)中占绝对优势;3)对比不同径组间全株碳储量倍数关系,中径组是小径组的3.4倍;大径组是中径组的2.68倍;特大径组是大径组的1.89倍,碳储量增速随径级增大呈逐渐降低趋势;4)从杉木碳储量在不同器官中的分配来看,树干和树枝中的碳储量随径级的增加而增多,叶片随径级的增加而减少。

In this study,the airborne LiDAR technology was used to investigate the stand factors of the Cunninghamia lanceolata plantation in Nanyuntai Forest Farm.Based on the survey results,the biomass and carbon storage were estimated using the biomass equation method combined with the carbon coefficient,in order to provide a basis for the management of Cunninghamia lanceolata' and the development of carbon sequestration and sink increase activities.The results indicate that 1) y=4.6642 {{\mathrm{e}}^{0.1237}}^x(R²=0.801 2) is the optimal inversion equation for diameter at breast height(DBH);2) The carbon storage of Cunninghamia lanceolata plantation increased with the increase of DBH class,and its aboveground carbon storage 4.31~72.79 t/hm²) was significantly higher than underground carbon storage 1.17~21.44 t/hm²),accounting for absolute advantage in the whole plant carbon storage(5.48~94.23 t/hm²);3) Comparing the multiple relationship of carbon storage of the whole plant among different DBH groups,the medium DBH group is 3.4 times of the small DBH group;The large DBH group is 2.68 times larger than the medium DBH group;The extra large DBH group is 1.89 times of the large DBH group,and the growth rate is gradually decreasing;4) From the distribution of carbon storage in different organs of Cunninghamia lanceolata,the carbon storage in the trunk and branches increases with the increase of DBH class,while the leaves decrease with the increase of DBH class.