川黄柏成熟林木生长规律研究  

Study on the Growth Law of Mature Trees of Phellodendron chinense

作　　者：钟青山 向才海 向祖恒 向明 姚茂华 涂思思 ZHONG Qing-shan(Forestry Bureau of Longshan County,Longshan,Hunan 416800)

机构地区：[1]湖南省龙山县林业局,湖南龙山416800

出　　处：《园艺与种苗》2023年第8期5-9,共5页Horticulture & Seed

基　　金：湖南省2021年第一批地方标准制修订项目(湘市监标函[2021]33号)第287号“川黄柏规范栽培技术规程”。

摘　　要：[目的]研究川黄柏成熟林木生长规律。[方法]在湖南省龙山县大安乡采伐川黄柏成年林木3株,按1 m区分段法作树干解析。[结果]川黄柏成熟林木胸径平均生长量前期平稳增长,后期缓慢下降,10年后出现最大值0.93 cm/年;胸径连年生长量前期、中期和后期分别在0.15~0.70、0.70~2.05和0.15~0.70 cm/年波动;树高平均生长量及连年生长量分别在0.5~1 m/年及0.16~2 m/年波动;材积平均生长量持续平稳增长;材积连年生长量前期波动性增长,后期快速下降,10年后出现最大值0.026962 m^(3);林分上层川黄柏于26年和30年进入数量近成熟期和成熟期;立地优良、无林木竞争的川黄柏散生木于21年及26年进入数量近成熟期和成熟期;生长早衰的下层被压木可能于16年和20年进入数量近成熟期和成熟期。川黄柏成熟林木胸高形数0.35。[结论]掌握川黄柏成熟林木生长规律,可为科学经营川黄柏提供基础。[Objective]The aim of this study was to master the growth law of mature trees of Phellodendron chinense.[Method]Three adult trees of P.chinense were harvested in Da’an township,Longshan county,Hunan province,and the trunk analysis was made according to the 1 m zone segmentation method.[Result]The average growth of DBH of mature trees of P.chinense increased steadily in the early stage,decreased slowly in the later stage,and the maximum value was 0.93 cm/year after 10 years.The annual growth of DBH fluctuated among 0.15-0.70,0.70-2.05 and 0.15-0.70 cm per year in the early,middle and late stages respectively.The average growth of height and annual growth fluctuated between 0.5-1.0 and 0.16-2.00 m per year respectively.The average volume growth continued to grow steadily.The annual growth of volume fluctuated in the early stage and decreased rapidly in the later stage,and the maximum value was 0.026962 m^(3) after 10 years.P.chinense in the upper layer of the stand entered the near mature stage and mature stage in 26 and 30 years.The scattered trees of P.chinense with excellent site and no forest competition entered the near mature stage and mature stage in 21 and 26 years.The lower layer pressed wood with premature growth and senescence might enter the quantitative near mature stage and mature stage in 16 and 20 years.The breast height form factor of P.chinense was 0.35.[Conclusion]Mastering the growth law of mature trees of P.chinense can provide a basis for scientific management of P.chinense.

关 键 词：树干解析 生长规律 形数 成熟林 川黄柏 

分 类 号：S567.19[农业科学—中草药栽培]