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| 杉木中密度幼林光环境与生长修枝效应 | |
| 引用本文： | 段爱国,赵世荣,章允清,赵克昌,张建国.杉木中密度幼林光环境与生长修枝效应[J].福建林学院学报,2009,29(4). |
| 作者姓名： | 段爱国 赵世荣 章允清 赵克昌 张建国 |
| 作者单位： | 1. 中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京,100091 2. 福建省邵武卫闽国有林场,福建,邵武,354006 3. 甘肃省林业科学技术推广总站,甘肃,兰州,730046 |
| 基金项目： | 国家"十一五"科技支撑计划资助项目，中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金科技服务林改专项基金资助项目 |
| 摘 要： | 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。 |
| 关 键 词： | 杉木幼林 中密度 修枝强度 透光率 叶面积指数 |
Effect of pruning on stands light environment and growth of middle-density Chinese fir young plantations |
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| DUAN Ai-guo,ZHAO Shi-rong,ZHANG Yun-qing,ZHAO Ke-chang,ZHANG Jian-guo.Effect of pruning on stands light environment and growth of middle-density Chinese fir young plantations[J].Journal of Fujian College of Forestry,2009,29(4). | |
| Authors: | DUAN Ai-guo ZHAO Shi-rong ZHANG Yun-qing ZHAO Ke-chang ZHANG Jian-guo |
| Institution: | DUAN Ai-guo1,ZHAO Shi-rong2,ZHANG Yun-qing2,ZHAO Ke-chang3,ZHANG Jian-guo1 (1.Research Institute of Forestry,Chinese Academy of Forestry,Key Laboratory of Tree Breeding and Cultivation,State Forestry Administration,Beijing 100091,China,2.Weimin State-owned Forestry Farm of Shaowu County,Fujian Province,Shaowu,Fujian 354006,3.Forestry Scientific Technology Extension Station of Gansu,Lanzhou,Gansu 730046,China) |
| Abstract: | The dynamics of light environment and leaf area index(LAI) of Chinese fir young plantations under the condition of different pruning height treatment were studied using canopy analyzer LAI-2000,and the effects of pruning on stands growth were discussed.Four main conclusions were gotten.(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 tren... |
| Keywords: | young stands of Chinese fir middle density pruning intensity light transmission rate leaf area index |
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