2012, 0(6) 4-7 DOI:     ISSN: 1007-2284 CN: 42-1419/TV

Current Issue | Archive | Search                                                            [Print]   [Close]
Information and Service
This Article
Supporting info
PDF(0KB)
[HTML]
Reference
Service and feedback
Email this article to a colleague
Add to Bookshelf
Add to Citation Manager
Cite This Article
Email Alert
Keywords
HYPROP System, Unsaturated Hydraulic Conductivity, Soil Water Characteristic Curve
Authors
YU Xiao-Lei
HUANG Shuang
PENG Zi-Bin
HUANG Jie-Sheng
PubMed
Article by Yu,X.L
Article by Huang,s
Article by Peng,Z.B
Article by Huang,J.S

Using HYPROP System to Measure Hydraulic Conductivity and Soil Water Characteristic Curve

Abstract

HYPROP System can continuously measure both soil water characteristic curve and unsaturated hydraulic conductivity(K(h)) at same tine within low water tension area. But HYPROP System fail to work within high pressure range. Therefore, it is unreliable to extrapolate the soil water characteristic curve within high water tension area. Contraposing this shortage , the soil water cotent at high pressure(15×103hPa) were measured using Centrifugal Method. Based on Van GenuchtenMualem model, the soil water characteristic curve were evaluated using the data from HYPROP System and one control points from Centrifugal Method. Three test soil sanples were tested in this paper. The results showed:1) adding a control points at high water tension made the extrapolation of Soil Water Characteristic Curve more reliable;2) the pressure range that HYPROP System can measure K(h) of soil is narrow. Also, to better evaluate the parameters , saturated hydraulic conductivity(Ks ) should be provided.

Keywords HYPROP System, Unsaturated Hydraulic Conductivity, Soil Water Characteristic Curve  
Received 2012-01-31 Revised 2012-03-12 Online: 2012-11-15 
DOI:
Fund:
Corresponding Authors:
Email:
About author:

References:

[1]尚熳廷,冯杰,刘佩贵,等. SWCC测定时吸力计算公式与最佳离心时间的探讨[J].河海大学学报(自然科学版), 2009(1): 12-15.
[2]潘宗俊,刘庆成.基于离心机法研究变重度压实黄土土-水特征曲线[J].公路,2009(8): 270-274.
[3]雷志栋,杨诗秀,谢森传.土壤水动力学[M].北京:清华大学出版社,1988.
[4]黄爽,蔡树英,王富庆.应用时域反射仪测定非饱和土壤水力传导度[J].中国农村水利水电,1999,(3),15~17.
[5] Schindler U, Mueller L. Simplifying the evaporation method for quantifying soil hydraulic properties[J]. Journal of Plant Nutrition and Soil, 2006.
[6] Peters A, Durner W. Simplified evaporation method for determining soil hydraulic properties [J]. Journal of Hydrology, 2008,356:147-162.
[7]Schindler U, Durner W,von Unold G, et al. The evaporation method: Extending the measurement range of soil hydraulic properties using the air-entry pressure of the ceramic cup [J]. Journal of Plant Nutrition and Soil Science,2010,173(4):563~572.
[8] Schindler U, von Unold G, Mueller L. Evaporation method for measuring unsaturated hydraulic properties of soils: extending the range[J]. Soil Science Society of America Journal, 2009.
[9]HYPROP User Manual[M], UMS GmbH Muchen Germany,2010.
[10]秦耀东.土壤物理学[M].北京:高等教育出版社,2003.

Similar articles
1..[J]. , 2006,0(12): 30-32

Copyright by