坡位对红椿幼林生长的影响  

Effects of slope position on the growth of Toona ciliata plantations young stage

作　　者：宋澄 吴际友[2] 程勇[2] 魏志恒 姜波 SONG Cheng;WU Jiyou;CHENG Yong;WEI Zhiheng;JIANG Bo(Liuyanghu State-owm Forest Farm,Liuyang 410300,China;Hunan Academy of Forestry,Changsha 410004,China;Forestry Bureau of Miluo,Miluo 414401,China)

机构地区：[1]浏阳市浏阳湖国有林场,湖南浏阳410300 [2]湖南省林业科学院,湖南长沙410004 [3]汨罗市林业局,湖南汨罗414401

出　　处：《湖南林业科技》2018年第5期82-85,共4页Hunan Forestry Science & Technology

基　　金：湖南省林业科技计划项目"闽楠;红椿家具材良种选育与应用"(XLK201406)

摘　　要：通过对5年生红椿试验与示范林不同坡位生长调查分析,结果表明:在红椿幼林生长阶段,坡位是影响其胸径和树高生长量的主效应影响因素,不同坡位上红椿幼林的胸径和树高生长量差异极其显著(p<0. 01),红椿幼林林分胸径和树高生长量表现为下坡位>中坡位>上坡位,并且不同坡位间导致的生长量差异在50%以上;其他立地因子如坡度、坡向、海拔高度等对红椿幼林胸径和树高生长量影响较小,但对林分冠幅生长有显著影响(p<0. 05)。可见在丘陵或者山地进行红椿造林时,坡位是影响红椿幼林生长的一个重要因子,在山体中下坡营造红椿丰产林,可充分保证红椿林分的生长量,同时充分发挥红椿的优良品质。Based on the investigation and analysis of the growth traits of 5-year-old Toona ciliata plantations and demonstration forests with different slope position,the result showed that slope position is the main influencing factor of DBH and tree height growth in T. ciliata young forest stage. The difference in DBH and height growth of young T. ciliata plantations with different slope positions is extremely significant（p〈0. 01）,other site factors such as slope grade,slope aspect and altitude had little effect on DBH and tree height growth of T. ciliata plantations and the growth differece up 50%,but it can cause significant difference in crown breadth of T. ciliata plantations（p〈0. 05）. This indicates that slope position is an important factor affecting the growth of young T. ciliata plantations when make afforestation in hilly or mountainous areas. To ensure the growth of T. ciliata plantations,improve the afforestation quality and give full play to the fine quality of T. ciliata. We should adjust the stand structure and appropriately reduce the proportion of afforestation in high slope.

关 键 词：红椿 幼林生长 坡位 影响 

分 类 号：S758.51[农业科学—森林经理学]