中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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; Chen, Jiangang2,3; Chen, Xiaoqing1,2,3; Cui, Wenrong1,3; Li, Xiangning1,3; Huang, Min1,3
刊名FORESTS
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
DOI10.3390/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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