| 秋季油松雪倒原因分析及其推论 |
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| 引用本文： | 马和,张晓明,王俊杰.秋季油松雪倒原因分析及其推论[J].甘肃林业科技,2014,39(4):76-80. |
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| 作者姓名： | 马和 张晓明 王俊杰 |
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| 作者单位： | 1. 甘肃省林业科学研究院,甘肃兰州,730020
2. 甘肃省国家级兴隆山自然保护区管理局,甘肃榆中,730117 |
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| 基金项目： | 国家科技支撑计划项目“2011BAK12B08”资助 |
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| 摘 要： | 利用静力学模型建立树体力矩平衡方程,分析甘肃省兴隆山自然保护区麻家寺秋季油松雪倒现象,提出雪倒三大成因为土体抗剪强度、根系生长分布特征和偏冠,郁闭林分中他感作用则是导致偏冠的主要因素,并分析指出他感作用还会导致根系呈偏态分布,进一步加重雪倒危险。进而推论分析了树木抗雪倒、风倒的形态特征,以及坡面泥石流起动机制。
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| 关 键 词： | 秋季 油松 偏冠 力矩平衡方程 他感作用 |
Corollaries and Analysis of Pinus tabuliformis Fell Down Caused by Snow on Autumn |
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| MA He,ZHANG Xiao-ming,WANG Jun-jie.Corollaries and Analysis of Pinus tabuliformis Fell Down Caused by Snow on Autumn[J].Journal of Gansu Forestry Science and Technology,2014,39(4):76-80. |
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| Authors: | MA He ZHANG Xiao-ming WANG Jun-jie |
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| Institution: | MA He, ZHANG Xiao-ming, WANG Jun-jie(1. Gansu Academy of Foresty, Lanzhou 730020, China; 2. Gansu Xinglongshan National Nature Reserve Administration Bureau, Yuzhong Gansu 730117, China) |
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| Abstract: | The article analysis of Pinus tabuliformis fell down caused by snow on autumn in Majiasi of Xinglongshan national nature reserve based on tree torque balance equation which established by static＇ s model. Put forward the reason are shear strength of soil, root growth distribution and partial crown. Further pointed out that allelopathy is the main factor that leads to partial crown in closed forests which can leads to the asymmetrical distribution of root, thus further danger. The last, the authors analyzed the morphological characteristics of snow-resistant and the starting mechanism of slope debris flow. |
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| Keywords: | autumn Pinus tabuliformis asymmetrical canopy torque balance equation allelopathy |
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