| 初始含水量对盐碱土饱和导水能力和盐分淋洗的影响 |
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| 引用本文： | 尹勤瑞,张兴昌,王丹丹.初始含水量对盐碱土饱和导水能力和盐分淋洗的影响[J].水土保持通报,2011,31(3):71-74. |
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| 作者姓名： | 尹勤瑞 张兴昌 王丹丹 |
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| 作者单位： | 1. 西北农林科技大学资源环境学院,陕西杨凌,712100
2. 西北农林科技大学资源环境学院,陕西杨凌712100 西北农林科技大学水土保持研究所,陕西杨凌712100 中国科学院水利部水土保持研究所,陕西杨凌712100 |
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| 基金项目： | “973”国家重点基础研究发展规划项目“生源要素的生物地球化学过程及其区域响应”(2007CB106803); 西北农林科技大学科研创新团队支持计划项目; “十一五”科技支撑计划“黄土高原水土流失综合治理工程关键支撑技术研究”(2006BAD09B06) |
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| 摘 要： | 为了探究初始含水量对盐碱土饱和导水能力和盐分淋洗的影响,采用室内模拟试验,进行了6个不同初始含水量的定水头饱和导水能力试验。结果表明,盐碱土饱和导水率随初始含水量的增加而减小,二者呈显著的线性负相关;随初始含水量的增加,淋洗液pH值降低,电导率升高;随盐碱土饱和导水率的增大,淋洗液pH值升高,电导率降低,二者均与饱和导水率间呈对数关系。长期淹水状态下,盐碱土饱和导水能力平稳降低,盐分淋洗效果也变差。
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| 关 键 词： | 初始含水量 饱和导水率 淋洗液 pH值 电导率 |
| 收稿时间： | 2010/9/27 0:00:00 |
| 修稿时间： | 2010/11/8 0:00:00 |
Effect of Initial Water Content on Saturated Hydraulic Conductivity and Salt Leaching of Alkaline Soil |
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| YIN Qin-rui,ZHANG Xing-chang and WANG Dan-dan.Effect of Initial Water Content on Saturated Hydraulic Conductivity and Salt Leaching of Alkaline Soil[J].Bulletin of Soil and Water Conservation,2011,31(3):71-74. |
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| Authors: | YIN Qin-rui ZHANG Xing-chang and WANG Dan-dan |
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| Institution: | YIN Qin-rui1,ZHANG Xing-chang1,2,3,WANG Dan-dan1(1.College of Resources and Environment,Northwest A & F University,Yangling,Shaanxi 712100,China,2.Institute of Soil and Water Conservation,3.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,China) |
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| Abstract: | The effect of initial water content on saturated hydraulic conductivity(KS10) and salt leaching of alkaline soil was researched using column leaching experiments in laboratory.Saturated hydraulic conductivity was measured at six different initial water contents.The results indicated that saturated hydraulic conductivity decreased with an increase in initial water content,showing a significant negative linear correlation.With an increase in initial water contents,the pH value decreased while electrical condu... |
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| Keywords: | initial water content saturated conductivity salt leachate pH value electrical conductivity |
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