72年生细叶云南松天然林生长规律研究  

The growth rhythm of 72-year-old Pinus yunnanensis var natural forest

作　　者：吴敏[1] 李春叶[1,2] 秦武明[1] 蓝柳凤 吴方程 李赟[1] 

机构地区：[1]广西大学林学院,广西南宁530004 [2]广西国有雅长林场,广西百色533209

出　　处：《广东农业科学》2014年第2期61-65,共5页Guangdong Agricultural Sciences

摘　　要：采用树干解析的方法,对广西国有雅长林场72年生细叶云南松天然林生长规律进行研究.结果表明：72年生细叶云南松天然林的平均胸径、树高和材积分别为53.40 cm（去皮）、26.3 m和2.5523 m3.胸径在第1～9年生长缓慢,第10～55年进入快速生长期,连年生长量曲线与平均生长量曲线相交于第54～55年,之后生长明显降低.第9～34年为树高生长的快速期,连年生长峰值出现在第19年,连年生长曲线与平均生长曲线相交于第34～35年之间.材积的连年生长在第1～11年增长十分缓慢,材积累积量仅为0.0215 m3,仅占总材积生长量的0.84％,第11年之后材积的增长迅速增加,第48年时达到最大值0.0802 m3/年,直到第68～69年材积生长达到数量成熟.经拟合的生长模型有很高的精度,其中胸径、树高以及材积分别以威布尔模型、理查德模型和威布尔模型最优.The growth rhythm of Pinus yunnanensis var natural forest in Guangxi Yachang Forest Farm were studied by the method of stem analysis. The results showed that the DBH, tree height and volume of 72-year-old P yunnanensis var in a natural forest were 53.40 cm, 26.3 m, 2.5523 m^3, respectively. The DBH with a poor growth in 1st-9th years, and the fast growing period of DBH was at 10-55th years. Current annual increment curve and average increment curve of DBH intersected in the 54-55th years, then current annual increment dropped rapidly. The fast growing period of tree height was during the 9-34th years, and the current annual increment curve of tree height reached the peak in the 19th years, and it intersected with the curve of average increment of tree height in the 34-35th years. Volume increment had a poor level in 1 -11 st years, volume cumulant was only 0.0215 m^3, that was only 0.84% of the total volume cumulant. After that, the volume increment increased rapidly. The current annual increment of volume reached the peak, which was 0.0802 mJ/a,in the 48th years. Volume increment didn＇t achieve the number of mature until the 68th -69th years. The growth models had high accuracy of fitting, and the optimal model of DBH, tree height and volume were wei bull model, Richard and weibull model, respectively.

关 键 词：细叶云南松 天然林 生长规律 生长模型 

分 类 号：S758.55[农业科学—森林经理学]