| 2008年初特大冰雪灾害对粤北地区杉木人工林树木损害的类型及程度 |
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| 引用本文： | 何茜,李吉跃,陈晓阳,陈红跃,彭华贵,樊顺江.2008年初特大冰雪灾害对粤北地区杉木人工林树木损害的类型及程度[J].植物生态学报,2010,34(2):195-203. |
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| 作者姓名： | 何茜 李吉跃 陈晓阳 陈红跃 彭华贵 樊顺江 |
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| 作者单位： | 1华南农业大学林学院, 广州 510642; 2广东省天井山林场, 广东韶关 512726 |
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| 基金项目： | 广东省部产学研合作专项，华南农业大学校长人才引进项目 |
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| 摘 要： | 2008年8月,采用典型取样法,设置20m×30m(或15m×30m)的方形样地13个,对广东省天井山林场杉木(Cunninghamia lanceolata)人工林冰雪灾害进行调查。结果表明:1)粤北地区杉木人工林受损严重,样地内受害杉木比例高于80%,主要集中在海拔500-900m的地区;2)杉木人工林受损类型主要划分为3种,以折断类型为主(65.09%),其次为倒伏(或翻蔸,18.37%)和弯曲(3.20%)。其中,根据不同程度将折断划分为5个级别:轻微受损,即断稍(占折断总数的12.28%);轻度受损,即树冠顶端至中部断裂(38.49%);中度受损,即树冠中部至下部断裂,受到较严重损伤(31.15%);严重受损,即树冠全部受损(15.97%);极严重受损,即树冠近根部断裂或折断后枯死(2.11%),树冠受损为杉木受灾的主要特征;3)林分密度过高(3500株·hm-2)或过低(1500株·hm-2)都易造成杉木折断,坡向与坡位对其影响较小,合理的密度调控至关重要;4)杉木胸径对受损类型及程度的敏感性较高,表现为粗壮杉木易发生断稍和较轻微的树冠受损,细弱杉木虽不易折断,但一经折断则受损严重。适宜的尖削度对有效预防和减轻杉木受损十分重要。
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| 关 键 词： | 杉木 受损类型 粤北地区 人工林 冰雪灾害 |
Types and extent of damage to Cunninghamia lanceolata plantations due to unusually heavy snow and ice in southern China |
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| HE Qian,LI Ji-Yue,CHEN Xiao-Yang,CHEN Hong-Yue,PENG Hua-Gui,FAN Shun-Jiang.Types and extent of damage to Cunninghamia lanceolata plantations due to unusually heavy snow and ice in southern China[J].Acta Phytoecologica Sinica,2010,34(2):195-203. |
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| Authors: | HE Qian LI Ji-Yue CHEN Xiao-Yang CHEN Hong-Yue PENG Hua-Gui FAN Shun-Jiang |
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| Affiliation: | 1College of Forestry, South China Agricultural University, Guangzhou 510642, China; and 2Tianjingshan Forest Farm of Guangdong, Shaoguan, Guangdong 512726, China |
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| Abstract: | Aims Forest ecosystems were seriously damaged by unusually heavy snow and ice in early 2008 in southern China. Chinese fir(Cunninghamia lanceolata) ,the main timber tree in southern China,was one of the most severely affected species. Our objective was to investigate and assess types and extent of damage to this tree species in plantation stands in northern Guangdong,analyze relationships among site condition,forest structure and damage,and provide a theoretical basis and technical guidance for protecting e... |
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| Keywords: | Cunninghamia lanceolata damage type northern Guangdong plantation snow and ice disaster |
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