An exploratory analysis of vegetation strategies to reduce shallow landslide activity on loess hillslopes, Northeast Qinghai-Tibet Plateau, China
文献类型：期刊论文
| 作者 | Hu Xia-song1,2; Brierley, Gary3; Zhu Hai-li1; Li Guo-rong1; Fu Jiang-tao2; Mao Xiao-qing1; Yu Qin-qin1; Qiao Na1 |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2013-08-01 |
| 卷号 | 10期号:4页码:668-686 |
| 关键词 | Arid Environments Shallow Landslide Vegetative Hillslope Protection Root-soil Composite Systems Tensile Strength Root Reinforcement |
| 文献子类 | Article |
| 英文摘要 | Heavy summer rainfall induces significant soil erosion and shallow landslide activity on the loess hillslopes of the Xining Basin at the northeast margin of the Qinghai-Tibet Plateau. This study examines the mechanical effects of five native shrubs that can be used to reduce shallow landslide activity. We measured single root tensile resistance and shear resistance, root anatomical structure and direct shear and triaxial shear for soil without roots and five rootsoil composite systems. Results show that Atriplex canescens (Pursh) Nutt. possessed the strongest roots, followed by Caragana korshinskii Kom., Zygophyllum xanthoxylon (Bunge) Maxim., Nitraria tangutorum Bobr. and Lycium chinense Mill. Single root strength and shear resistance relationships with root diameter are characterized by power or exponential relations, consistent with the Mohr-Coulomb law. Root mechanical strength reflects their anatomical structure, especially the percentage of phloem and xylem cells, and the degree and speed of periderm lignifications. The cohesion force of root-soil composite systems is notably higher than that of soil without roots, with increasing amplitudes of cohesion force for A. canescens, C. korshinskii, Z. xanthoxylon, N. tangutorum and L. chinense of 75.9%, 75.1%, 36.2%, 24.6% and 17.0 % respectively. When subjected to shear forces, the soil without root samples show much greater lateral deformation than the root-soil composite systems, reflecting the restraining effects of roots. Findings from this paper indicate that efforts to reduce shallow landslides in this region by enhancing root reinforcement will be achieved most effectively using A. canescens and C. korshinskii. |
| WOS关键词 | MODEL ROOT SYSTEMS ; TENSILE-STRENGTH ; SLOPE STABILITY ; SOIL REINFORCEMENT ; SHEAR RESISTANCE ; TREE ROOTS ; ARCHITECTURE |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000322392800016 |
| 源URL | [http://ir.isl.ac.cn/handle/363002/4473]  |
| 专题 | 青海盐湖研究所_青海盐湖研究所知识仓储 中国科学院青海盐湖研究所 |
| 作者单位 | 1.Qinghai Univ, Dept Geol Engn, Xining 810016, Qinghai, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China 3.Univ Auckland, Sch Environm, Auckland 1142, New Zealand |
| 推荐引用方式 GB/T 7714 | Hu Xia-song,Brierley, Gary,Zhu Hai-li,et al. An exploratory analysis of vegetation strategies to reduce shallow landslide activity on loess hillslopes, Northeast Qinghai-Tibet Plateau, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2013,10(4):668-686. |
| APA | Hu Xia-song.,Brierley, Gary.,Zhu Hai-li.,Li Guo-rong.,Fu Jiang-tao.,...&Qiao Na.(2013).An exploratory analysis of vegetation strategies to reduce shallow landslide activity on loess hillslopes, Northeast Qinghai-Tibet Plateau, China.JOURNAL OF MOUNTAIN SCIENCE,10(4),668-686. |
| MLA | Hu Xia-song,et al."An exploratory analysis of vegetation strategies to reduce shallow landslide activity on loess hillslopes, Northeast Qinghai-Tibet Plateau, China".JOURNAL OF MOUNTAIN SCIENCE 10.4(2013):668-686. |
入库方式： OAI收割
来源：青海盐湖研究所
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