| 摘要: |
| 本文主要研究了2008初冰雪灾害后一年内受损杉木的恢复和更新情况,以期为杉木人工林灾后重建工作提供支持。以位于粤北山区天井山林场的杉木人工林中的受损杉木为研究对象,通过标准地调查方法,选取4种不同类型受损杉木的标准木(类型Ⅰ：断干高在原树高的1/3内；类型Ⅱ：断干高在原树高的1/3-2/3；类型Ⅲ：断干高在原树高的2/3以上；类型Ⅳ：倒伏),监测其2008年11月~2009年11月期间的萌芽高和地径的月生长动态。结果表明：冰雪灾害后的一年内,受损杉木萌芽高生长的旺盛期为5-9月份,而地径生长总体呈现出萌芽初期粗生长增加明显,后期增速逐渐缓慢的特点。林分密度、坡度和海拔等立地因子会显著影响受损杉木萌芽的生长,需在灾后杉木人工林重建时给予重点关注。总体而言,受损Ⅲ型和受损Ⅳ型杉木萌芽生长较好,但综合考虑生长和成材效果,建议保留受损Ⅲ型,伐掉受损杉木Ⅰ型、Ⅱ型和Ⅳ型。 |
| 关键词: 杉木 萌芽 生长规律 立地因子 冰雪灾害 |
| DOI： |
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| 基金项目:广东省部产学研合作专项“粤北森林冰雪灾害评估及灾后复产技术研究与示范”(2008A020100013)、华南农业大学校长科学“粤北山区冰雪灾害植被恢复技术集成与示范研究”(4400-208014)。 |
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| Characteristics of sprout growth of the damaged Cunninghamia lanceolata in mountainous area of northern Guangdong after Ice-Snow disaster |
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FAN Shun-Jiang,HE Qian,LI Ji-yue,SU Yan and CHEN Qian-qian
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College of Forestry,South China Agricultural University,Guangzhou,College of Forestry,South China Agricultural University,Guangzhou,College of Forestry,South China Agricultural University,Guangzhou,Academy of Forestry Survey and Planning of Guangdong Province,Guangzhou
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| Abstract: |
| The recovery and update status of the damaged Cunninghamia lanceolata in mountainous area of northern Guangdong within a year after Ice-Snow disaster In January 2008 was studied to provide support for post-disaster reconstruction of C. lanceolata plantations. By theSmethodSofSsample plot, sample trees with 4 kinds of damaged types (typeⅠ: borken stem height (BSH)/tree height (TH) <1/3; typeⅡ: 1/3 < BSH/TH < 2/3; typeⅢ: BSH/TH > 2/3; type Ⅳ:lodging) of C. lanceolata trees from C. lanceolata plantations in Tianjingshan forest farm in mountainous area of northern Guangdong were selected to measure the height (SH)and ground diameter (GD)dynamic of their sprout within a year from November 2008 to November 2009. |
| Key words: Cunninghamia lanceolata, sprout, growth regularity, site factor, Ice-Snow damage |
