1) pruning intensity
修枝强度
1.
Diameter at breast height(DBH) and single tree stem volume increment 5 years following treatments at age 9 years decreased significantly with pruning intensity increased.
选择修枝木,每年对其进行1次修枝,修枝强度为4种规定树干直径(6、8、10和12 cm)以下的所有枝条。
2.
(1)Pruning obviously improved stands light transmission rate,the canopy light transmission rate increased with the increasing of pruning intensity,and the bigger the pruning intensity was,the more obvious the restoration trendency of canopy light transmission rate was with the stands growth.
采用LAI-2000冠层分析仪对不同修枝高度处理条件下杉木人工幼林光环境及叶面积指数的动态变化进行了分析,并探讨了生长量的修枝效应,初步得到4点主要结论:(1)修枝明显提高了林内透光率,林内透光率随着修枝强度的增大而增大,且修枝强度愈大,林内透光率恢复至干扰前状态的趋势愈明显;(2)修枝明显降低了林分叶面积指数,随着修枝强度的增大,林分叶面积指数呈线性下降,修枝强度高的林分叶面积指数的增长百分率相对愈高,修枝所引起的林分叶面积指数下降的程度远远低于林分透光率的增大;(3)不同修枝强度对隔行修枝林分的总生长量影响不显著,但过度修枝会对修枝木胸径生长产生抑制,而对修枝木高生长影响不显著;(4)强度为40%的修枝方式以约20%的叶面积损耗换取了透光率1倍左右的提高,且对修枝木材积生长影响不显著。
2) pruning height
修枝高度
1.
In order to determine the lowest pruning height of Pinus yunnaneneis trees which could prevent forest crown fire conversion from surface fire,combustion experimentations of fine fuel were tested 6 times with experimental equipment designed by the authors and the ignition temperature were measured.
为确定可以阻止云南松林地表火向树冠火转化的最低修枝高度,测定云南松针叶的着火点,在自行设计的燃烧床上对不同载量的云南松林细小可燃物进行6次燃烧试验,通过分析可燃物地表火过程中燃烧区域垂直方向上的温度变化,将燃烧区域垂直方向上最高温度等于着火点处的高度确定为云南松的最低安全修枝高度。
4) pruning density
整枝强度<林>
5) Repair strength
修复强度
6) strength modification
强度修正
1.
And the mode of strength modification is built through the stated reliability for the design fault.
依据要求的可靠度 ,建立了身管强度设计薄弱区域的强度修正模型。
补充资料：表光合强度(见光合强度)
表光合强度(见光合强度)
forecast of sowing or transplanting time
b iaoguanghe qiangdu表光合强度见光合强度
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条