土壤渗透特性的圆盘张力入渗法测定研究
Determination of Soil Hydraulic Conductivity Using a Disc Tension Infiltrometer
查看参考文献7篇
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文摘
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以川中丘陵区紫色土为研究对象, 采用圆盘张力入渗法, 测定坡耕地和林地土壤在5个水头下(0、-1、-3、-6、-9cm)的导水率曲线, 并对比分析野外圆盘张力入渗法和环刀土样室内降水头法测得的土壤饱和导水率的差异。结果表明, 土壤稳定入渗率和非饱和导水率随负压绝对值的增大而降低, 且坡耕地的变化幅度大于林地。野外圆盘张力入渗法测得的饱和导水率明显高于环刀土样降水头法的测定值。基于研究结果, 推荐使用圆盘张力入渗法测定导水率曲线和饱和导水率。 |
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其他语种文摘
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Using a disc tension infiltrometer,infiltration experiments were conducted to measure soil hydraulic conductivity curve under different tensions(0,-1,-3,-6,-9cm)and different land uses on purple soils of hilly southwestern Sichuan,China.The differences of saturated hydraulic conductivity determined by both disc tension infiltrometer experiment in the field and falling head method on soil ring samples in the laboratory were comtrasted and analyzed.The results showed that the soil infiltration rate decreased quickly with increasing absolute value of applied tension,which was more significant in cultivated soils than in forest soils.The observed values of Ksusing the disc tension infiltrometer were higher than those obtained using the falling head method on soil ring samples.Therefore,the use of a disc tension infiltrometer for determination of hydraulic conductivity curve at or near saturation and saturated conductivity is recommended in this study. |
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来源
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灌溉排水学报
,2013,32(1):121-123 【扩展库】
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关键词
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圆盘张力入渗仪
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土壤导水率
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降水头法
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地址
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1.
西北农林科技大学水利与建筑工程学院, 陕西, 杨凌, 712100
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中国科学院/水利部成都山地灾害与环境研究所, 成都, 610041
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1672-3317 |
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学科
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农业基础科学 |
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基金
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国家“十二五”科技支撑计划项目
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中国科学院“百人计划”项目
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国家自然科学基金项目
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文献收藏号
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CSCD:4790014
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参考文献 共
7
共1页
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1.
王秀英. 水土保持措施下的土壤入渗研究及次暴雨地表产流计算方法.
泥沙研究,1996,9(6):79-83
|
被引
5
次
|
|
|
|
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2.
Bruce R R. Surface soil degradation and soil productivity restoration and maintenance.
Journal Soil Sci Soc Am,1995,59(3):654-660
|
被引
5
次
|
|
|
|
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3.
朱波. 川中丘陵区土地利用变化的生态环境效应---以中国科学院盐亭紫色土农业生态试验站集水区为例.
山地学报,2001,19(增):14-19
|
被引
21
次
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4.
Yoon Y. Estimating soil water retention in a selected range of soil pores using tension disc infiltrometer data.
Soil and Tillage Research,2007,97(1):107-116
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被引
1
次
|
|
|
|
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5.
Gardner W R. Some steady-state solutions of the unsaturated moisture flow equation with application to evaporation from a water table.
Soil Sci,1958,85(4):228-232
|
被引
140
次
|
|
|
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6.
Wooding R A. Steady infiltration from a shallow circular pond.
Water Resources Research,1968,4(6):1259-1273
|
被引
33
次
|
|
|
|
|
7.
夏江宝. 不同外界条件下土壤入渗性能的研究.
水土保持研究,2004,11(2):115-117,191
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被引
24
次
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