Study onthe Hydraulic Conductivity Properties of Unsaturated Forest Soilin Lienhwachi Area

碩士 === 國立臺灣大學 === 森林學研究所 === 92 === This study applied on the hydraulic conductivity of the unsaturated forest soil in the Lien-Hwa-Chi area, and compared the deviation in hydraulic conductivity among different locations and depths. It’s helpful to understand the effective of water contain, soil...

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Main Authors: Juhui Huang, 黃襦慧
Other Authors: Ming-chieh Chen
Format: Others
Language:zh-TW
Published: 2004
Online Access:http://ndltd.ncl.edu.tw/handle/87520684977187308395
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spelling ndltd-TW-092NTU053600492016-06-10T04:16:00Z http://ndltd.ncl.edu.tw/handle/87520684977187308395 Study onthe Hydraulic Conductivity Properties of Unsaturated Forest Soilin Lienhwachi Area 蓮華池林地未飽和土壤水力傳導度特性之研究 Juhui Huang 黃襦慧 碩士 國立臺灣大學 森林學研究所 92 This study applied on the hydraulic conductivity of the unsaturated forest soil in the Lien-Hwa-Chi area, and compared the deviation in hydraulic conductivity among different locations and depths. It’s helpful to understand the effective of water contain, soil pores, rough pores and roots of plants. The study area was located on the eastern slope in Lienhwachi watershed No.5. Measure the forest soil saturated hydraulic conductivity in different gradient, and choose 4 points, 3 depths on ridge, hillslope and valley. The study used the Tension Infiltrometer to measure the hydraulic conductivity and excavated undisturbed soil for physical test. It could tell the effectives of hydraulic conductivity by compared both of the results. These results show that there was no deviation in hydraulic conductivity among different locations but depths. The surface soil is loose and the pores are less in deeper soil, so the hydraulic conductivity becomes smaller within the increasing of depth. The hydraulic conductivity decrease if part of soil pores filled with air, and the gradient become smaller. This situation usually happened in the surface soil. There was no significant difference in deeper soil because the water movement here depended on micro pores. Ming-chieh Chen 陳明杰 2004 學位論文 ; thesis 70 zh-TW
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language zh-TW
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description 碩士 === 國立臺灣大學 === 森林學研究所 === 92 === This study applied on the hydraulic conductivity of the unsaturated forest soil in the Lien-Hwa-Chi area, and compared the deviation in hydraulic conductivity among different locations and depths. It’s helpful to understand the effective of water contain, soil pores, rough pores and roots of plants. The study area was located on the eastern slope in Lienhwachi watershed No.5. Measure the forest soil saturated hydraulic conductivity in different gradient, and choose 4 points, 3 depths on ridge, hillslope and valley. The study used the Tension Infiltrometer to measure the hydraulic conductivity and excavated undisturbed soil for physical test. It could tell the effectives of hydraulic conductivity by compared both of the results. These results show that there was no deviation in hydraulic conductivity among different locations but depths. The surface soil is loose and the pores are less in deeper soil, so the hydraulic conductivity becomes smaller within the increasing of depth. The hydraulic conductivity decrease if part of soil pores filled with air, and the gradient become smaller. This situation usually happened in the surface soil. There was no significant difference in deeper soil because the water movement here depended on micro pores.
author2 Ming-chieh Chen
author_facet Ming-chieh Chen
Juhui Huang
黃襦慧
author Juhui Huang
黃襦慧
spellingShingle Juhui Huang
黃襦慧
Study onthe Hydraulic Conductivity Properties of Unsaturated Forest Soilin Lienhwachi Area
author_sort Juhui Huang
title Study onthe Hydraulic Conductivity Properties of Unsaturated Forest Soilin Lienhwachi Area
title_short Study onthe Hydraulic Conductivity Properties of Unsaturated Forest Soilin Lienhwachi Area
title_full Study onthe Hydraulic Conductivity Properties of Unsaturated Forest Soilin Lienhwachi Area
title_fullStr Study onthe Hydraulic Conductivity Properties of Unsaturated Forest Soilin Lienhwachi Area
title_full_unstemmed Study onthe Hydraulic Conductivity Properties of Unsaturated Forest Soilin Lienhwachi Area
title_sort study onthe hydraulic conductivity properties of unsaturated forest soilin lienhwachi area
publishDate 2004
url http://ndltd.ncl.edu.tw/handle/87520684977187308395
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