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Until now, the pore size distribution, PSD, of soil profile has been calculated from soil moisture characteristic data by water release method or mercury porosimetry using the capillary rise equation. But the current methods are often difficult to use and time consuming. Thus, in this work, theoretical framework for an easy and fast technique was suggested to estimate the PSD from unsaturated hydraulic conductivity data in an undisturbed field soil profile. In this study, unsaturated hydraulic conductivity data were collected and simulated by the variation of soil parameters in the given boundary conditions (Brooks and Corey soil parameters, αBC= 1 - 5 L-1, b = 1 - 10; van Genuchten soil parameters, αVG= 0.001 - 1.0 L-1, m = 0.1 - 0.9). Then, Ks(1.0 cm h-1) was used as the fixed input parameter for the simulation of each models. The PSDs were estimated from the K(h) collected data by model simulation. In the simulation of Brooks-Corey parameter, the saturated hydraulic conductivity, Ks, played a role of scaling factor for unsaturated hydraulic conductivity,

K(h). Changes of parameter b explained the shape of PSD curve of soil intimately, and a αBC affected on the sensitivity of PSD curve. In the case of van Genuchten model, Ks and αVG played the role of scaling factor for

a vertical axis and a horizontal axis, respectively. Parameter m described the shape of PSD curve and K(h) systematically. This study suggests that the new theoretical technique can be applied to the in situ prediction of PSD in undisturbed field soil.

토양의 공극 크기별 분포는 토양중 수분의 함량과 수분퍼텐셜의 관계를 나타내는 토양수분특성 자료로부터 계산된다. 그러나 기존의 토양수분특성 측정방법들은 교란된 토양을 이용하거나 코어시료를 채취한다 하여도 동역학적으로 변화하는 현장 토양 공극분포를 반영하는 데는 많은 어려움이 있었다. 또한 이러한 토양수분특성 자료를 얻기 위해서는 많은 시간과 노력이 요구되어 왔다. 따라서 본 연구에서는 교란되지 않은 현장 토양에서 측정한 불포화 수리전도도 자료로부터 토양의 공극 크기별 분포 곡선을 추정하는 이론적 체계를 제시하고자 하였다. 이를 위해 Brooks-Corey와 van Genuchten의 수리학적 모델을 이용하여 토양의 불포화 수리전도도 자료로부터 공극의 크기별 분포를 추정하는 이론적 모델을 전개하였으며, 이러한 이론적 모델에 근거하여 Brooks-Corey와 van Genuchten의 soil parameter들의 변화에 따른 불포화수리전도도와 공극 크기별 분포곡선의 모사하였다. 공극크기별 분포곡선의 모사는 토성별 불포화수리전도도 곡선의 scaling factor 역할을 하는 Ks를 1.0 cm h-1로 설정하고, 수리학적 모델별로 일정한 경계조건 (Brooks-Corey soil parameters, αBC = 1 - 5 L-1, b = 1 - 10;

van Genuchten soil parameters, αVG = 0.001 - 1.0 L-1, m = 0.1 - 0.9)에서 수행하였다. Brooks-Corey 모델을 이용한 공극 크기별 분포곡선의 모사에서는 parameter b가 공극분포곡선의 형태에 영향을 주었으며, αBC는 공극분포곡선의 민감도에 영향을 주었다. 또 van Genuchten 모델을 이용한 공극 크기별 분포곡선의 모사에서는 αVG가 scaling factor의 역할을 하였으며, parameter m은 공극분포곡선의 형태에 영향을 주었다. 따라서 경계조건 안에서 불포화 수리전도도 자료로부터 공극의 크기별 분포 모사가 가능하였으며, 토양 parameter들이 토성, 입자분포 등의 물리적 특성을 잘 반영하는 경우 이론적으로 현장 토양의 공극 크기별 분포의 추정이 가능할 것으로 판단되었다.

권호기사

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기사명 저자명 페이지 원문 목차
(The)Simulation of pore size distribution from unsaturated hydraulic conductivity data using the hydraulic functions Young-Man Yoon ;Jeong-Gyu Kim ;Kook-Sik Shin pp.407-414

Three dimensional measurements of pore morphological and hydraulic properties Hyen-Chung Chun ;Daniel Gimenez ;Sung-Won Yoon ;Richard Heck ;Tom Elliot ;Laise Ziska ;Kate Geaorge pp.415-423

Effect of the application of sucrose on rapid decrease of soil inorganic nitrogen Hyun-Hwoi Ku ;Woo-Jin Lim ;Sang-Eun Lee pp.424-429

Prediction of nitrogen loading from forest stands in eutrophication of lake Doug-Young Chung ;Young-Han Lee ;Jin-Ho Lee ;Mi-suk Park pp.430-437

Impacts of oyster shell and peat treatments on soil properties in continuous watermelon cropping greenhouse plots Byung-Koo Ahn ;Jin-Ho Lee ;Young-Han Lee pp.438-445

Impact of continuous application of swine slurry on changes in soil properties and yields of tomatoes and cucumbers in a greenhouse Young-Ho Seo ;Byoung-Ouk Cho ;Jun-Keun Choi ;An-Seok Kang ;Byeong-Chan Jeong ;Yeong-Sang Jung pp.446-452

Nitrogen isotope compositions of synthetic fertilizer, raw livestock manure slurry, and composted livestock manure Sang-Sun Lim ;Sang-Mo Lee ;Seung-Heon Lee ;Woo-Jung Choi pp.453-457

Dry matter yield and nutrients uptake of sorghum×sudangrass hybrid grown with different rates of livestock manure compost Sang-Sun Lim ;Sang-Mo Lee ;Seung-Heon Lee ;Woo-Jung Choi pp.458-465

Antibiotic uptake by plants from soil applied with antibiotic-treated animal manure Young-Ho Seo ;Byoung-Ouk Cho ;An-Seok Kang ;Byeong-Chan Jeong ;Yeong-Sang Jung pp.466-470

Influence of calcium supply on the growth, calcium and oxalate contents, mineral nutrients and Ca-oxalate crystal formation of cucumber Jwa-Kyung Sung ;Su-Yeon Lee ;Ye-Jin Lee ;Rog-Young Kim ;Ju-Young Lee ;Jong-Sik Lee ;Byoung-Choon Jan pp.471-477

Characteristics of Schizandra chinensis baillon orchard soils located in Jangsu-gun, Jeollabuk-do Jae-Young Cho pp.478-483

Effects of green manure and carbonized rice Husk on soil properties and rice growth Weon-Tai Jeon ;Ki-Yeong Seong ;Jong-Ki Lee ;In-Seok Oh ;Young-Han Lee ;Yong-Sik Ok pp.484-489

Biocontrol of pepper diseases by Lysobacter enzymogenes LE429 and neem oil Thazin Han ;Min-Young Cho ;Yong-Seong Lee ;Yun-Seok Park ;Ro-Dong Park ;Yi Nam ;Kil-Yong Kim pp.490-497

(The)Effectiveness of arbuscular mycorrhizal fungi(AMF) inoculation on the growth of lettuce Chi-Do Wee ;Jun-Xi Li ;Hong-Lim Kim ;Bo-Kyoon Sohn pp.498-505

Effect of inoculation of Methylobacterium oryzae on the growth of red pepper at different organic fertilizer levels Puneet Singh Chauhan ;Gil-Seung Lee ;Min-Kyoung Lee ;Woo-Jong Yim ;Gyeong-Ja Lee ;Young-Sang Kim ;Jo pp.506-513

Effect of methylobacterium oryzae CBMB20 inoculation and methanol spray on growth of red pepper (Capsicum annuum L.) at different fertilizer levels Puneet Singh Chauhan ;Gil-Seung Lee ;Min-Kyoung Lee ;Woo-Jong Yim ;Gyeong-Ja Lee ;Young-Sang Kim ;Jo pp.514-521

Optimization of gibberellic acid production by Methylobacterium oryzae CBMB20 Md. Ashaduzzaman Siddikee ;Muhammad Hamayun ;Gwang-Hyun Han ;Tong-min Sa pp.522-527

참고문헌 (31건) : 자료제공( 네이버학술정보 )

참고문헌 목록에 대한 테이블로 번호, 참고문헌, 국회도서관 소장유무로 구성되어 있습니다.
번호 참고문헌 국회도서관 소장유무
1 EVALUATION OF SPATIAL DISTRIBUTION OF HYDRAULIC CONDUCTIVITY USING EFFECTIVE POROSITY DATA 네이버 미소장
2 Simple Field Method for Determining Unsaturated Hydraulic Conductivity 네이버 미소장
3 Design for an Automated Tension Infiltrometer 네이버 미소장
4 Brooks, R.H. and A.T. Corey. 1964. Hydraulic properties of porous media. Hydrology Paper no. 3, Civil Engineering Dep., Colorado State Univ., Fort Collins, CO, USA. 미소장
5 Brooks, R.H. and A.T. Corey. 1966. Properties of porous media affecting fluid flow. J. Irrig. Drain. Dic. Am. Soc. Civ. Eng. 92:61-88. 미소장
6 Burdine, N.T. 1953. Relative permeability calculations from PSD data. Trans. AIME 198:71-77. 미소장
7 A SIMPLE METHOD FOR DETERMINING UNSATURATED CONDUCTIVITY FROM MOISTURE RETENTION DATA 네이버 미소장
8 Childs, E.C. 1969. An introduction to the physical basis of soil water phenomena. London: Willey-Interscience. 미소장
9 Durner, W. 1992. Predicting the unsaturated hydraulic conductivity using multi-porosity water retention curves. pp.185-202. In van Genuchten, M.Th. et al. (ed.) Indirect methods for estimating the hydraulic properties of unsaturated soils. Univ. of California, Riverside. 미소장
10 Everts, C.J. and R.S Kanwar. 1993. Interpreting tensioninfiltrometer data for quantifying soil macropores: Some particle considerations. Trans. ASAE 36(2):423-428. 미소장
11 Macropore Characterization by Indirect Methods 네이버 미소장
12 Luckner, L., M.Th. van Genuchten, and D.R. Nielsen. 1989. A consistent set of parametric models for the two-phase flow of immiscible fluids in the subsurface. Water Resour. Res. 25:2187-2193. 미소장
13 Mualem, Y. 1976. A new model predicting the hydraulic conductivity of unsaturated porous media. Water Resour. Res. 12:513-522. 미소장
14 Macroscopic Capillary Length, Sorptivity, and Shape Factor in Modeling the Infiltration Rate 네이버 미소장
15 BIMODAL POROSITY AND UNSATURATED HYDRAULIC CONDUCTIVITY 네이버 미소장
16 Designs for Disc Permeameters 네이버 미소장
17 Rawls, W.J. and D.L. Brakensiek. 1985. Prediction of soil water properties for hydrologic modeling. p.293-299. In Jones, E.B. and T.J. Ward. (ed.) Watershed management in the eighties. Proc. Irrig. Drain. div., ASCE, Denver, CO. 30 April-1 May 1985. Am. Soc. Civil Eng., New York, NY, USA. 미소장
18 Determination of Hydraulic Conductivity Using a Tension Infiltrometer 네이버 미소장
19 Describing Soil Hydraulic Properties with Sums of Simple Functions 네이버 미소장
20 Estimating Generalized Soil‐water Characteristics from Texture 네이버 미소장
21 Improved Prediction of Unsaturated Hydraulic Conductivity with the Mualem-van Genuchten Model 네이버 미소장
22 Measuring the hydraulic properties of a stable aggregated soil 네이버 미소장
23 Comparison of Three Field Methods to Characterize Apparent Macropore Conductivity 네이버 미소장
24 A Closed‐form Equation for Predicting the Hydraulic Conductivity of Unsaturated Soils 네이버 미소장
25 van Genuchten, M.Th. and D.R. Nielsen. 1985. On describing and predicting the hydraulic properties of unsaturated soils. Ann. Geophysicae 3:615-628. 미소장
26 Characterizing Water and Solute Movement by Time Domain Reflectometry and Disk Permeametry 네이버 미소장
27 Estimation of Unsaturated Hydraulic Conductivity from Field Sorptivity Measurements 네이버 미소장
28 White, I. and M.J. Sully. 1987. Macroscopic and microscopic capillary length and time scales from field infiltration. Water Resour. Res. 23:1514-1522. 미소장
29 White, I., M.J. Sully, and K.M. Perroux. 1992. Measurement of surface soil hydraulic properties: Disk permeameters, tension infiltrometers, and other techniques. p.69-103. In Topp et al.(ed.) Advances in measurement of soil physical properties: Bringing theory into practice. SSSA Spec. Publ. 30. SSSA, Madison, WI. 미소장
30 Wooding, R.A. 1968. Steady infiltration from a shallow circular pond. Water Resour. Res. 4:1259-1273. 미소장
31 Yoon, Y., J.G. Kim, and S. Hyun. 2007. Estimating soil water retention in a selected range of soil pores using tension disc infiltrometer. Soil Till. Res. 97:107-116. 미소장