亚热带农业研究2025，Vol.21Issue(2)：110-117,8.DOI:10.13321/j.cnki.subtrop.agric.res.2025.02.006
4个桂南乡土阔叶树种的生长规律与木材性质
Growth patterns and wood properties of four indigenous broadleaf tree species in Southern Guangxi
摘要
Abstract
[Purpose]This study investigated the growth patterns and wood properties of four indigenous broadleaf tree species fol-lowing stand improvement in Southern Guangxi,aiming to provide a basis for the sustainable management of indigenous broadleaf plantations.[Method]Four 20-year-old indigenous broadleaf tree species of Mytilaria laosensis,Michelia odora,Castanopsis hys-trix,and Betula alnoides were studied.Stem analysis was employed to determine the growth patterns of diameter at breast height(DBH),tree height,and individual timber volume and wood properties across different stand ages.[Result](1)At 20 years of age,the total increments in DBH and individual timber volume followed the trend of Mytilaria laosensis>C.hystrix>Michelia odora>B.alnoides,while that in tree height was in descending order of Mytilaria laosensis>Michelia odora>C.hystrix>B.alnoides.The cur-rent annual increment in DBH of Mytilaria laosensis and C.hystrix fluctuated considerably across ages,with both species demonstra-ting advantages in timber volume growth during the mid-to-late stages.The mean annual increments in DBH and tree height of Mich-elia odora increased gradually in the mid-to-late stages.B.alnoides reached quantitative maturity in timber volume growth near 18 years.(2)C.hystrix exhibited the highest air-dry density,while Mytilaria laosensis had the highest compressive strength parallel to grain.Michelia odora showed lower compressive strength parallel to grain than the other species(P<0.05).[Conclusion]The com-prehensive comparison of growth patterns and wood properties among the four indigenous broadleaf tree species suggests that Mytilar-ia laosensis and C.hystrix are suitable for large-diameter timber production,Michelia odora for early-stage afforestation,and B.al-noides for short-to-medium rotation timber production.In production,silvicultural practices should be adopted according to the spe-cific growth performance of each species.关键词
乡土阔叶树种/林分改造/树干解析/生长规律/木材性质/桂南Key words
indigenous broadleaf tree species/stand conversion/stem analysis/growth patterns/wood properties/Southern Guangxi分类
农业科技引用本文复制引用
黄世芳,陈丽宇,梁大熠,杨梅,李松海..4个桂南乡土阔叶树种的生长规律与木材性质[J].亚热带农业研究,2025,21(2):110-117,8.基金项目
广西自筹经费林业科技项目"国家储备林多功能经营模式构建与示范"(2024GXZCLK20). （2024GXZCLK20）
