蒋家沟泥石流区新银合欢细根固土效应
Effect of Leucaena Leucocephala Fine Root on Soil Fixation inDebris Flow Area of Jiangjia Gully
查看参考文献16篇
|
文摘
|
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
|
|
其他语种文摘
|
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). |
|
来源
|
水土保持通报
,2011,31(5):85-89,214 【核心库】
|
|
关键词
|
蒋家沟
;
新银合欢
;
细根分布
;
固土效应
|
|
地址
|
中国科学院水利部成都山地灾害与环境研究所, 中国科学院山地灾害与地表过程重点实验室, 四川, 成都, 610041
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1000-288X |
|
学科
|
灾害及其防治 |
|
基金
|
国家自然科学基金
;
中国科学院知识创新工程重要方向项目
|
|
文献收藏号
|
CSCD:4346657
|
参考文献 共
16
共1页
|
|
1.
Simon A. Quantifying the mechanical and hydrologic effects of riparian vegetation on streambank stability.
Earth Surface Processes and Landforms,2002,24:527-546
|
被引
47
次
|
|
|
|
|
2.
Waldron L J. The shear resistance of root-permeated homogenous and stratified soil.
Journal of the Soil Science Society of America,1977,41:843-849
|
被引
100
次
|
|
|
|
|
3.
Wu T H. Strength of tree roots and landslides on Prince of Wales Island, Alaska.
Canadian Geotechnical Journal,1979,35:579-590
|
被引
1
次
|
|
|
|
|
4.
Abernethy B. The distribution and strength of riparian tree roots in relation to riverbank reinforcement.
Hydrol. Proc,2001,15:63-79
|
被引
32
次
|
|
|
|
|
5.
Mattia C. Biotechnical Characteristics of Root Systems of Typical Mediterranean Species.
Plant and Soil,2005,278:23-32
|
被引
53
次
|
|
|
|
|
6.
Schmid I. The influence of soil type and interspecific competition on the fine root system of Norway spruce and European beech.
Basic. Appl. Ecol,2002,3(339/346)
|
被引
1
次
|
|
|
|
|
7.
Genet M. Root reinforcement in plantations of Cryptomeria japonica D. Don: Effect of tree age and stand structure on slope stability.
Forest Ecology and Management,2008(256):1517-1526
|
被引
1
次
|
|
|
|
|
8.
崔鹏. 干热河谷生态修复模式及其效应: 以中国科学院东川泥石流观测研究站为例.
中国水土保持科学,2005,3(3):60-64
|
被引
29
次
|
|
|
|
|
9.
张有富. 蒋家沟流域的森林植被与泥石流.
山地研究,1987,5(4):213-217
|
被引
3
次
|
|
|
|
|
10.
Hudeka C. Root system traits of Mahonia aquifolium and its potential use in soil reinforcement in mountain horticultural practices.
Scientia Horticulturae,2010,125(3):504-511
|
被引
1
次
|
|
|
|
|
11.
Genet M. The influence of cellulose content on tensile strength in tree roots.
Plant and Soil,2005,278:1-9
|
被引
88
次
|
|
|
|
|
12.
Bischetti G B. Root strength and root area ratio of forest species in lombardy (Northern Italy).
Plant and Soil,2005,278:11-22
|
被引
67
次
|
|
|
|
|
13.
Genet M. Root reinforcement in plantations of Cryptomeria japonica D. Don effect of tree age and stand structure on slope stability.
Forest Ecology and Management,2008,256:1517-1526
|
被引
24
次
|
|
|
|
|
14.
Claus A G E. Effect of stand age on fine-root biomass and biomass distribution in three European forest chronosequences.
Can. J. For. Res,2005(35):1617-1625
|
被引
1
次
|
|
|
|
|
15.
De Baets S. Root tensile strength and root distribution of typical Mediterranean plant species and their contribution to soil shear strength.
Plant Soil,2008,305:207-226
|
被引
74
次
|
|
|
|
|
16.
Pollen N. Temporal and spatial variability in root reinforcement of streambanks accounting for soil shear strength and moisture.
Catena,2007,69:197-205
|
被引
43
次
|
|
|
|
|
了解气象卫星更多信息，请访问