林业科学2025，Vol.61Issue(5)：74-84,11.DOI:10.11707/j.1001-7488.LYKX20240543
山西中条山林局油松纯林碳汇潜力
Carbon Sequestration Potentiality of Pinus tabuliformis Pure Forest in Zhongtiaoshan Forestry Bureau of Shanxi Province
摘要
Abstract
[Objective]The aim of this study was to develop a carbon storage growth graded model system incorporating carbon sequestration grade,stand density index,and stand age,and put forward a method for estimating carbon sequestration potentiality,which can be used to assess the carbon sequestration potentiality at forest management unit scale,thereby providing a basis for forest management to increase carbon sequestration.[Method]Based on the data of permanent sample plots of Pinus tabuliformis pure forest of Shanxi Province and theoretical growth model,a double iterative grading algorithm was used to ascertain the carbon sequestration grade and to develop the carbon storage graded growth model system.This model system includes mean individual tree carbon storage graded,stand carbon storage graded,mean individual tree basal area graded and stand basal area graded growth models.Models were evaluated by the coefficient of determination(R2),root mean square error and relative root mean square error.The optimization method was applied to determine the optimal stand density that maximizes carbon sequestration potentiality,with the maximum stand carbon storage annual increment as the objective function and stand density as the decision variable.The realized carbon sequestration,potential carbon sequestration,and the gap between them were analyzed based on the sub-compartment survey data from Zhongtiaoshan Bureau of Shanxi Province.[Result]The R2 values were 0.920 and 0.903 for mean individual tree carbon storage graded growth model and basal area graded growth model respectively,and 0.966 and 0.985 for stand carbon storage graded growth model and basal area graded growth model,respectively,indicating a good fit for all growth models.Stand carbon sequestration potentiality increases initially and then decreases with stand age,and it rises with an increase of carbon sequestration grade.The average potential and realized carbon sequestration for P.tabuliformis pure forests was 1.59 and 0.97 t·hm-2a-1 at unit area,respectively,with an average relative carbon sequestration growth gap was 29.08％in Zhongtiaoshan Bureau.[Conclusion]This study successfully established a carbon storage graded growth model system for P.tabuliformis pure foresr that can predict carbon storage growth process.It is recommended to make stand density adjustment for P.tabuliformis plantations to increase realized carbon sequestration.This approach can serve as a reference for carbon management aimed at increasing carbon sequestration in both P.tabuliformis forests and other forest types.关键词
生长模型/固碳等级/碳汇潜力/林分密度优化Key words
growth model/carbon sequestration grade/carbon sequestration potentiality/stand density optimization分类
农业科技引用本文复制引用
何潇,罗光成,高文强,李海奎,曾伟生,段福军,雷相东..山西中条山林局油松纯林碳汇潜力[J].林业科学,2025,61(5):74-84,11.基金项目
国家重点研发计划课题"典型人工林立地质量评价与生产力提升技术(2022YFD2200501)" （2022YFD2200501）
国家自然科学基金青年科学基金项目"针阔混交林碳汇能力的密度和结构效应研究"(32301588). （32301588）
