| 大明山云贵山茉莉种群的冰冻灾害与测树因子的关系（摘要） |
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| 引用本文： | 朱宏光,孙冬婧,赵金龙,李燕群,韦洁,林建勇,王磊,郑羡,阳永泉,温远光.大明山云贵山茉莉种群的冰冻灾害与测树因子的关系（摘要）[J].农业科学与技术,2010,11(7):113-116. |
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| 作者姓名： | 朱宏光 孙冬婧 赵金龙 李燕群 韦洁 林建勇 王磊 郑羡 阳永泉 温远光 |
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| 作者单位： | 广西大学林学院,广西南宁,530004 |
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| 基金项目： | Support by National Natural Science Foundation of China(30860059).国家自然科学基金项目 |
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| 摘 要： | 目的]为研究亚热带森林对冰冻灾害的抵御能力、监测灾后云贵山茉莉种群的恢复和演替提供理论依据。方法]从种群生态学角度评估了2008年初的冰冻灾害对大明山中山区常绿阔叶林优势树种云贵山茉莉种群的影响。结果]样地内胸径≥1cm的云贵山茉莉植株共1090株,其中697株受灾,占总株数的63.9%;受灾植株中以冠损的数量最多,占37.6%,被压弯株数次之,占13.0%,折干占10.2%,掘根的个体数最少,仅占3.1%。统计检验结果显示,林木受灾类型和程度存在显著的径级、树高级、冠幅和尖削度差异;冠损率和受灾率随着林木胸径的增大而增大,压弯率则随胸径的增大而减小;受灾率、压弯率和折干率随着高度级的增加而缓慢下降,冠损率则表现为正态分布;林木冠幅级越高受灾率和冠损率越高,折干率随着冠幅级的增大而减少;尖削度大的植株更易发生冠损、压弯、折干和掘根。结论]云贵山茉莉种群对冰冻灾害的抵御能力受到多种因素如胸径、树高、冠幅、尖削度等的影响。在这些因素的作用下,大明山云贵山茉莉种群表现出以机械损害为主的各种受灾类型,直接被冻死的植株极少。
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| 关 键 词： | 冰冻灾害 大明山 云贵山茉莉 |
Relationships between Froze Damaged and Tree-measuring Factors of Huodendron biaristatum Species in Damingshan |
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| ZHU Hong-guang,SUN Dong-jing,ZHAO Jin-Iong,LI Yan-qun,WEI Jie,LIN Jian-yong,WANG Lei,ZHENG Xian,YANG Yong-quan,WEN Yuan-guang.Relationships between Froze Damaged and Tree-measuring Factors of Huodendron biaristatum Species in Damingshan[J].Agricultural Science ＆ Technology,2010,11(7):113-116. |
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| Authors: | ZHU Hong-guang SUN Dong-jing ZHAO Jin-Iong LI Yan-qun WEI Jie LIN Jian-yong WANG Lei ZHENG Xian YANG Yong-quan WEN Yuan-guang |
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| Institution: | (College of Forestry,Guangxi University,Nanning 530004 ) |
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| Abstract: | Objective] The aim was to provide a reference for studying the resistant ability of subtropical forest to freeze disaster and detecting the recovery and evolution of Huodendron biaristatum species after freeze disaster.Method] Effects of the damage caused by the southern ice storm in early 2008 on Huodendron biaristatum,dominant species of evergreen broad-leaved forest on the Damingshan,were studied in the aspect of population ecology.Result] Among the 1 090 Huodendron biaristatum individuals （DBH ≥ 1 cm）,697 individuals were victims,accounting for 63.9%.The largest part of the victims was crown breakdown,which took up 37.6%.13.0% of the victims were bent,and 10.2% of the victims were trunk broken.The least part of the victims were uprooted,accounting for only 3.1%.Different types and extent of forestry damage had remarkable differences in diameter class,tree height,crown and taper.Rates of damage and crown breakdown increased with the increase of DBH,while bent rate decreased.Rates of damage,bent and trunk broken declined slowly with the increase of tree height,while crown breakdown rate followed the normal distribution.As the crown level increased,rates of damage and crown breakdown increased,while the rate of trunk broken decreased.Individuals with high taper were more susceptible to crown damage,bending,breaking and uprooted.Conclusion] The resistant ability of Huodendron biaristatum species to freeze disaster is affected by many factors like DBH,tree height,crown,taper,etc..Huodendron biaristatum species in Damingshan affected by those factors show various kinds of damaged types dominant by mechanical damage,but there is few individual to die. |
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| Keywords: | Froze damaged Damingshan Huodendron biaristatum |
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