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| 土壤孔隙水承压条件下4种根—土复合体抗剪特性 | |
| 引用本文： | 张欣,姚喜军,刘静,王林和,尹瑞平,邢会文,金彩霞. 土壤孔隙水承压条件下4种根—土复合体抗剪特性[J]. 水土保持通报, 2010, 30(4): 22-26 |
| 作者姓名： | 张欣 姚喜军 刘静 王林和 尹瑞平 邢会文 金彩霞 |
| 作者单位： | 1. 水利部牧区水利科学研究所,内蒙古,呼和浩特,010020 2. 内蒙古农业大学生态环境学院,内蒙古,呼和浩特,010019 3. 包头市达茂旗畜牧业局草原工作站,内蒙古,包头,014500 |
| 基金项目： | 国家自然科学基金，中国水科院科研究专项 |
| 摘 要： | 采用直剪仪对4种沙生植物重塑的根-土复合体及素土进行快剪试验,探讨了其抗剪强度以及根径和垂直压力对抗剪强度的影响.结果表明,柠条、沙柳、沙地柏、白沙蒿根-土复合体在1.5 m(25 kPa)的浅层土体范围内抗剪强度均大于素土,4种植物根-土复合体的内摩擦角与素土相比差异不明显;在根径相同(1.25 mm)的情况下,4种植物根-土复合体的黏聚力均大于素土,其黏聚力增加率的变化范围在4.60%～46.23%之间,大小顺序为:柠条＞沙地柏＞沙柳＞白沙蒿;4种植物随着根径的增加,复合体的抗剪强度均有不同程度的增大. |
| 关 键 词： | 根-土复合体 抗剪强度 黏聚力 内摩擦角 |
| 收稿时间： | 2009-10-10 |
| 修稿时间： | 2010-03-19 |
Shear Strength Characteristics of Root-Soil Composites Under Bearing Pressure Condition of Soil Pore Water |
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| ZHANG Xin,YAO Xijun,LIU Jing,WANG Linhe,YIN Ruiping,XING Huiwen and JIN Caixia. Shear Strength Characteristics of Root-Soil Composites Under Bearing Pressure Condition of Soil Pore Water[J]. Bulletin of Soil and Water Conservation, 2010, 30(4): 22-26 | |
| Authors: | ZHANG Xin YAO Xijun LIU Jing WANG Linhe YIN Ruiping XING Huiwen JIN Caixia |
| Affiliation: | Institute of Water Resources for Pasturing Area of the Ministry of Water Resources, Hohhot, Inner Mongolia 010020, China;College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010019, China;College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010019, China;College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010019, China;Institute of Water Resources for Pasturing Area of the Ministry of Water Resources, Hohhot, Inner Mongolia 010020, China;College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010019, China;Prairie Workstation of the Damaoq Livestock Bureau, Baotou, Inner Mongolia 014500, China |
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