摘要
以湖南省宁乡县青羊湖国有林场马尾松—南酸枣混交林为研究对象,利用获取的调查数据,运用主成分分析方法,分析林分结构因子与固碳功能间的耦合作用,探讨确定针阔混交林的合理林分结构,为维持群落结构稳定和提高固碳功能提供依据。通过建立林分结构与固碳功能的耦合关系模型,对林分结构和固碳功能进行分析,结果表明:林分结构因子与固碳功能密切相关;密度为1500株/hm^2、郁闭度为0.65左右、林层结构为复层林的林分具有较高的固碳能力综合评价指数,说明这种结构特征有利于保持较好的固碳功能,也是青羊湖国有林场马尾松—南酸枣混交林的最佳林分结构。
Taking Masson pine-Choerospondias axillaris mixed forest in Qingyanghu National Forest Park of Ningxiang County,Hunan Province as the research object,using the survey data obtained and the principal component analysis method,analyzing the coupling impact between stand structure factors and carbon sequestration function,and studying to determine the reasonable stand structure of coniferous and broad-leaved mixed forest,all these efforts aim to provide basis for maintaining the stability of community structure and improving carbon sequestration function.Through establishing the coupling relationship model of forest structure and carbon sequestration function,the analysis of forest structure and carbon sequestration function is carried out.The result shows that there is a close relationship between stand structure factors and carbon sequestration function.The forest with high comprehensive evaluation index of carbon sequestration capacity has the following characteristics:the density of 1500 plants/hm^2,canopy density of about 0.65,and with multi-layer forest on the forest layer structure.This structural feature is beneficial to maintain a better carbon sequestration function,and is the best stand structure of Masson pine-Choerospondias axillaris mixed forest in Qingyanghu National Forest Park.
作者
赵东方
ZHAO Dongfang(Central South Inventory and Planning Institute of National Forestry anti Grassland Administration,Changsha 410014,Hunan,China)
出处
《中南林业调查规划》
2020年第2期39-43,61,共6页
Central South Forest Inventory and Planning
关键词
针阔混交林
林分结构
固碳功能
耦合
coniferous and broad-leaved mixed forest
stand structure
carbon sequestration function
coupling
