坡位对15年生樟树纯林和樟杉混交林林分生长的影响  

The influence of slope position to the growth traits of 15 years old camphor pure forest and camphor & fir mix forest stands

作　　者：廖德志[1] 魏志恒 程勇[1] 吴际友[1] 陈明皋[1] 黄小飞[1] 刘欲晓 郭文平 贺文明 陈德云 LIAO Dezhi;WEI Zhiheng;CHENG Yong;WU Jiyou;CHEN Minggao;HUANG Xiaofei;LIU Yuxiao;GUO Wenping;HE Wenming;CHEN Deyun(Hunan Academy of Forestry,Changsha 410004,Hunan,China;Forestry Bureau of Youxian City,Youxian 412300 Hunan,China;Hangfengqiao State-owned Forest Farm,Youxian 412300,Hunan,China)

机构地区：[1]湖南省林业科学院,湖南长沙410004 [2]攸县林业局,湖南攸县412300 [3]湖南省攸县黄丰桥国有林场,湖南攸县412300

出　　处：《中南林业科技大学学报》2018年第8期14-18,共5页Journal of Central South University of Forestry & Technology

基　　金：国家“十三五”重点研发计划项目“樟树等高效培育技术研究”(2016YFD0600605)

摘　　要：樟树作为一种古老的珍贵树种,广泛应用于日常的生产与生活当中,但对于樟树的集约栽培研究却十分有限。通过试验林样地调查,研究了坡位对15年生樟树纯林和樟杉混交林林分生长的影响。结果表明:(1)在立地、造林密度及抚育措施一致条件下,纯林和混交林在不同坡位上的林分生长均存在显著差异;坡位对纯林和混交林林分的影响表现出一致的规律,不同坡位樟树林分生长表现为下坡位>中坡位>上坡位,下坡位林分的胸径、树高和冠幅都要显著大于中坡位和上坡位,而林分枝下高、主干高差异不明显。(2)坡位对纯林和混交林林分的影响程度有差异,坡位对混交林中樟树群体影响要明显大于纯林,并且影响程度随坡位提高而增大;当坡位较高时,同坡位上的樟树纯林胸径、树高生长量要显著大于混交林中的樟树群体,并且随坡位提高差异更加明显。(3)下坡位对纯林和混交林林分各生长量指标不存在显著差异,但同坡位混交林中的樟树群体表现出更低的开叉率,同时林分具有更加整齐的冠幅,这表明在坡位较低的立地条件下,樟树、杉木混交造林对樟树干形及冠形具有一定的调控作用。Cinnamomum camphora is an ancient and precious tree species,has widely applications But the study of intensive culture and timber forest to Cinnamomum camphora is limited. The influence of slope position to 15 years old Cinnamomum carnphora stand and Cinnamomum carnphora ＆ Cunninghamia lanceolata mingled forest stand growth traits was study by sample-plot survey. The results showed that： （1） There were significant difference among 3 different slope position of camphor pure forest and mix forest stand while the other site condition, silviculture density and tending management were basically coincide： The influence of slope position to these two kinds of forest stand was coincident; Whether it is the Cinnamomum carnphora pure forest stand or the mix forest stand in 3 different slope position showed the same regularities that the growth traits condition of Cinnamomum carnphora stand were Uphill Slope 〉 Middle Slope 〉 Lower Slope, the Lower Slope Cinnamomum carnphora＇s DBH, tree height and crown width were significant greater than the Middle slope and the Uphill slope, while there were no significant different in branch height and trtmk height. （2） The impact of slope position on pure forest and mingled forest is different, The influence degree of slope position on the camphor population in mingled forest is obviously greater than that of pure forest,and increase with the slope position elevates; On the slope higher position, the growth of DBH and tree height of pure camphor tree on the same slope position is significantly larger than that of the mingled forest, and the difference is more significant with the increase of the slope position. （3） There was no significant difference between the two stands on the downhill,however the mingled forest of camphor group showed lower branching rate and has more uniform crown width,It is showed that in the lower slope site condition, Camphor ＆ Fir mingled forest chould regulate the camphor tree stem shape and crown.

关 键 词：坡位 樟树 混交林 林分生长 

分 类 号：S758.51[农业科学—森林经理学]