文献类型：期刊文献

中文题名：不同径级赤皮青冈生物量及有机碳分配特征与模型选择

英文题名：Biomass and organic carbon allocation characteristics and model selection of Cyclobalanopsis gilva with different diameter classes

作者：肖斌[1,2] 姚甲宝[1,2] 徐克芹[1,2] 袁媛[1,2] 丁颖[1,2] 蔡宗明[1,2] 谢崟峰[1,2] 段毅[1,2] 邓秋敏[1,2]

第一作者：肖斌

机构：[1]中国林业科学研究院亚热带林业实验中心,江西分宜336600;[2]生物多样性保护与资源利用江西省重点实验室,江西分宜336600

年份：2025

卷号：45

期号：10

起止页码：124-133

中文期刊名：中南林业科技大学学报

外文期刊名：Journal of Central South University of Forestry & Technology

收录：;北大核心:【北大核心2023】；

基金：中央级公益性科研院所基本科研业务费专项(CAFYBB2020ZB002);江西省自然科学基金项目(20232BAB205047);江西省2023年度中央财政林业科技推广示范项目(JXTG〔2023〕05号)。

语种：中文

中文关键词：赤皮青冈;生物量;有机碳;分配特征;模型构建

外文关键词：Cyclobalanopsis gilva;biomass;organic carbon;distribution characteristics;model construction

分类号：S715

摘要：【目的】分析赤皮青冈各部位生物量及有机碳分配特征,构建生物量及有机碳含量模型,为后期筛选高碳汇赤皮青冈家系提供基础理论参数。【方法】选择径级为4~14 cm赤皮青冈标准木为研究对象,采用单株伐倒法、全挖法分别收集地上、地下部分样品,测定其生物量及有机碳含量,解析各器官生物量和有机碳的分配差异,构建异速生长方程。【结果】1)随着径级的增大,材积相应增大,相邻径级之间材积增长速度呈“W”形;2)不同径级赤皮青冈地上部分生物量大小和有机碳含量均表现为树干(去皮)>活枝>树叶>树皮>死枝,地下部分细根低于其他各部位,地上部分生物量及有机碳含量占比均在80%以上,而地下部分生物量及有机碳含量占比不及20%;3)赤皮青冈树高和胸径均与单株总生物量、有机碳存在显著线性关系(P<0.01),生物量及有机碳含量模型拟合效果以单株总量表现最好,其次为树干(去皮),单株总生物量最优拟合模型方程式lnTBS=2.233lnD+0.138lnH-1.574,单株总有机碳含量最优拟合模型方程式lnTOCC=2.112lnD+0.578lnH-2.794。【结论】树干和活枝是赤皮青冈生长的主要部分,结合胸径、树高生长指标可筛选出生物量大、含碳量高的赤皮青冈家系,在后期管理过程中应注重赤皮青冈干形的生长。
【Objective】The biomass and organic carbon distribution characteristics of each part of Cyclobalanopsis gilva were analyzed,and the biomass and organic carbon content models were constructed to provide basic theoretical parameters for the later screening of high carbon sink Cyclobalanopsis gilva families.【Method】The standard tree of Cyclobalanopsis gilva with diameter of 4-14 cm was selected as the research object,the aboveground and underground samples were collected by single plant felling method and full digging method respectively.The biomass and organic carbon content were measured,and the biomass and organic carbon distribution differences of each organ were analyzed.The allometric growth equation was constructed.【Result】1)With the increase of diameter class,the volume increases accordingly,and the growth rate of volume between adjacent diameter classes is“W”shape;2)The aboveground biomass and organic carbon content of different diameter classes of Cyclobalanopsis gilva showed trunk(peeled)>living branch>leaf>bark>dead branch.The underground part was fine root lower than other parts.The aboveground biomass and organic carbon content accounted for more than 80%,while the underground biomass and organic carbon content accounted for less than 20%;3)The tree height and DBH of Cyclobalanopsis gilva had a significant linear relationship with total biomass and organic carbon per plant(P<0.01).The fitting effect of biomass and organic carbon content model was the best in total biomass per plant,followed by trunk(peeling).The optimal fitting model equation of total biomass per plant was lnTBS=2.233lnD+0.138lnH-1.574,and the optimal fitting model equation of total organic carbon content per plant was lnTOCC=2.112lnD+0.578lnH-2.794.【Conclusion】Trunks and living branches are the main parts of the growth of C.gilva.Combined with DBH and tree height growth indicators,C.gilva families with large biomass and high carbon content can be screened out.In the later management process,attention should be paid to the growth of trunk shape of C.gilva.