30年生江南油杉人工林生长规律  

The Growth Rhythm of the 30 Years Old Keteleeria cyclolepis Flous Plantation

作　　者：张烨[1] 韦铄星[1] 蒋燚[1] 刘菲[1] 黄荣林[1] ZHANG Ye;WEI Shuoxing;JIANG Yi;LIU Fei;HUANG Ronglin(Guangxi Forestry Research Institute,Key Laboratory of Central South Fast-growing Timber Cultivation of Forestry Ministry of China,Nanning 530002,Guangxi,China)

机构地区：[1]广西壮族自治区林业科学研究院、国家林业局中南速生材繁育实验室,广西南宁530002

出　　处：《福建林业科技》2020年第3期23-28,共6页Journal of Fujian Forestry Science and Technology

基　　金：广西自然科学基金(2018GXNSFBA281206);广西主要用材林资源高效培育与利用人才小高地专项(桂财社函[2019]130)。

摘　　要：以30年生江南油杉为研究对象,对其生长规律进行研究。结果表明:胸径、树高和材积等测树指标生长周期的规律性明显,坡位差异对江南油杉的胸径、树高及冠幅生长均具有显著影响,对江南油杉整株各器官生物量影响差异不大。30年生江南油杉平均胸径为27.9 cm,平均树高18.8 m,实验形数达到0.44,胸高形率为0.74,其干型通直,出材率高,生长迅速,年均胸径增长可达1 cm以上,具有优良用材树种的特性,值得在其适生区推广种植。30年生江南油杉胸径随着树龄增长呈快速增长趋势,其连年生长量经历4~8 a、13~15 a、17~20 a 3个快速增长波动期;树高随着树龄增长呈增长趋势,分为缓慢调整生长期(1~12 a)、快速生长期(13~24 a)和稳定生长期(25~30 a),树高的总平均生长量在24 a时达到最大值(0.68 m·a^-1);材积生长随树龄增长从一个缓慢增长到一个快速增长的递增过程,前14 a材积累积量缓慢,为0.0052 m^3,仅占30 a总材积生长量的1.0%,15~30 a为逐年加快的快速增长期,该试验林30年生的江南油杉均未达到数量成熟龄和工艺成熟龄。We researched on the growth rhythm of 30 years old keyeeria cyclolepis Flous plantation.the results showed that:the Keteleeria cyclolepis Flous had the characteristics of excellent timber species.The regularity of growth cycle of tree indices such as DBH,tree height and volume was obvious.The difference of slope position had significant influence on the growth of DBH,tree height and crown width,but had no significant difference in the biomass.The average DBH of 30-year-old Keteleeria cyclolepis Flous was 27.9 cm,the average tree height was 18.8 m,the experimental form factor was 0.44,the breast-height form quotient was 0.74.Its trunk type is straight,its wood outturn is high,its growth was fast,and its annual DBH can reach more than 1 cm a year.It had the characteristics of excellent timber species and is worth popularizing and planting in its suitable areas.The DBH of 30 years old Keteleeria cyclolepis Flous increased rapidly with tree age,and its annual growth experienced three periods of rapid growth fluctuation:4~8 a,13~15 a and 17~20 a.The tree height showed an increasing trend with the growth of tree age,which was divided into slow adjustment growth period(1~12 a),fast growth period(13~24 a)and stable growth period(25~30 a).The total average growth of tree height reached the maximum value of 0.68 m·a-1 at 24 a.The volume growth increased from a slow growth to a fast growth process with tree age.The accumulated volume in the first 14 years was 0.0052 m^3,accounting for only 1.0%of the total volume growth in 30 years.The rapid growth period of 15~30 a was accelerated year by year.The 30 years old Keteleeria cyclolepis Flous in this experimental forest did not reach the quantitative maturity age and the technological maturity age.

关 键 词：江南油杉 生长规律 坡位差异 数量成熟龄 工艺成熟龄 

分 类 号：S791.15[农业科学—林木遗传育种] S718.4[农业科学—林学]