Impact of Root Distribution Characteristics on the Overturning Resistance of Leucaena leucocephala Forest in Debris-Flow Accumulation Area, Dawazi Gully, Yunnan, China
文献类型:期刊论文
作者 | Jin, Ke1,2,3![]() ![]() ![]() ![]() |
刊名 | FORESTS
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出版日期 | 2022-11-01 |
卷号 | 13期号:11页码:20 |
关键词 | debris flow overturning model root distribution characteristic root reinforcement critical turning moment |
ISSN号 | 1999-4907 |
DOI | 10.3390/f13111862 |
英文摘要 | Tree resistance to overturning is crucial in forestry hazard applications and management. Tree anchorage varies considerably with species, tree age, and site conditions. We investigate the relationship between the root characteristics of the overturning slip surface and the role of roots (regarding different diameters in overturning). Four Leucaena leucocephala were fully excavated by a quadrate monolith to establish root distribution characteristics, and 19 L. leucocephala were uprooted until the trees completely overturned to measure the anchoring resistance to overturning. A model was developed to improve the descriptions of root characteristics in the mechanical processes for tree overturning. The results show that the distribution characteristics of the root system were well described by the model. For the root-soil plate radius, the thickest root diameter and the root biomass of different diameters at the overturning slip surface increased with the diameter at the breast height. The root biomass affected the strength of the overturning slip surface; the root density may be a key factor in identifying the location of the overturning slip surface. The model could predict the overturning moment of most overturned trees; although it overestimated the overturning moment for small diameters at breast height trees, the results will be useful for understanding the influence of root distribution characteristics in overturning. |
WOS关键词 | NORWAY SPRUCE ; MECHANICAL RESISTANCE ; TURNING MOMENT ; TREE STABILITY ; SOIL TYPE ; ANCHORAGE ; SYSTEM ; ARCHITECTURE ; REINFORCEMENT ; LANDSLIDES |
资助项目 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; [41925030] ; [XDA23090403] |
WOS研究方向 | Forestry |
语种 | 英语 |
WOS记录号 | WOS:000894884600001 |
出版者 | MDPI |
资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences |
源URL | [http://ir.imde.ac.cn/handle/131551/57022] ![]() |
专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 中国科学院水利部成都山地灾害与环境研究所 |
通讯作者 | Chen, Xiaoqing |
作者单位 | 1.Univ Chinese Acad Sci, Beijing 10049, Peoples R China 2.CAS HEC, China Pakistan Joint Res Ctr Earth Sci, Islamabad 45320, Pakistan 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China |
推荐引用方式 GB/T 7714 | Jin, Ke,Chen, Jiangang,Chen, Xiaoqing,et al. Impact of Root Distribution Characteristics on the Overturning Resistance of Leucaena leucocephala Forest in Debris-Flow Accumulation Area, Dawazi Gully, Yunnan, China[J]. FORESTS,2022,13(11):20. |
APA | Jin, Ke,Chen, Jiangang,Chen, Xiaoqing,Cui, Wenrong,Li, Xiangning,&Huang, Min.(2022).Impact of Root Distribution Characteristics on the Overturning Resistance of Leucaena leucocephala Forest in Debris-Flow Accumulation Area, Dawazi Gully, Yunnan, China.FORESTS,13(11),20. |
MLA | Jin, Ke,et al."Impact of Root Distribution Characteristics on the Overturning Resistance of Leucaena leucocephala Forest in Debris-Flow Accumulation Area, Dawazi Gully, Yunnan, China".FORESTS 13.11(2022):20. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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