| 蒋家沟泥石流区新银合欢细根固土效应 | |
| Alternative Title | Effect of Leucaena Leucocephala Fine Root on Soil Fixation inDebris Flow Area of Jiangjia Gully |
郭灵辉1,2,3; 王道杰1,2 ; 陈东1,2,3; 陈晓艳1,2,3
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| 2011 | |
| Source Publication | 水土保持通报
 |
| ISSN | 1000-288X |
| Volume | 7Issue:3Pages:85-89+214 |
| Subtype | Article |
| Contribution Rank | 1 |
| Abstract | 以蒋家沟泥石流区不同龄级新银合欢根系为研究对象，在分析其垂直分布与构成特征的基础上，运用加筋原理研究其固土效应。结果显示，不同龄级新银合欢根系表聚现象明显，随土层深度的增加呈减少趋势，约80%集中在0-120cm土层范围内；细根(D≤1mm)在整个细根根系中所占比例较大，决定着整个细根的分布趋势；10年生新银合欢D≤1mm细根较5年生增幅明显，15年生1mm |
| Other Abstract | Variously aged Leucaena leucocephalain debris flow area of Jiangjia gully were chosen and the fine root systems were dug out from the surface to the bottom layers at different distances from the stem in three directions.Basing on the analysis of fine root vertical distributions and composition, the effect of fine roots on the soil shear strength were estimated according to reinforcement theory.The result show that fine roots exhibited an obvious accumulation trait in the topsoil layer, which reduced with depth.Approximately 80% of the fine root materials were found in the layer between 0-120cm depths.Fine roots were mainly composed of smaller ones(D≤1mm)and determined the development of root distribution.The 10-year stands had more fine roots(D≤1mm)than 5-year ones, and the 15-year stands had obviously more intermediate roots(1mm≤D≤2mm)comparing to the 10-year stands.Root tensile strength decreased significantly with increasing diameter, following apower law function.The soil shear strength enhanced by fine roots was highly variable among depths and ages, largely depended on the smaller roots(D≤1mm). |
| Keyword | 蒋家沟 新银合欢 细根分布 固土效应 |
| DOI | 10.13961/j.cnki.stbctb.2011.05.038 |
| Indexed By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:4346657 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/26025 |
| Collection | 山地灾害与地表过程重点实验室 |
| Corresponding Author | 王道杰 |
| Affiliation | 1.中国科学院山地灾害与地表过程重点实验室; 2.中国科学院水利部成都山地灾害与环境研究所; 3.中国科学院研究生院 |
| First Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Corresponding Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Recommended Citation GB/T 7714 | 郭灵辉,王道杰,陈东,等. 蒋家沟泥石流区新银合欢细根固土效应[J]. 水土保持通报,2011,7(3):85-89+214. |
| APA | 郭灵辉,王道杰,陈东,&陈晓艳.(2011).蒋家沟泥石流区新银合欢细根固土效应.水土保持通报,7(3),85-89+214. |
| MLA | 郭灵辉,et al."蒋家沟泥石流区新银合欢细根固土效应".水土保持通报 7.3(2011):85-89+214. |
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| 蒋家沟泥石流区新银合欢细根固土效应_郭灵（532KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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