Van Genuchten 모델을 활용한 간척지의 토양수분변화 분석
Analysis of Soil Moisture Changes in Reclaimed Tideland Using Van Genuchten Model
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초록
The laboratory model test was conducted by dividing domestic reclaimed tideland into Sandy Loam (SL) and Silt Clay Loam (SiCL) to estimate soilmoisture change and water supply according to soil characteristic when establishing irrigation plan for reclaimed tideland upland crop. In addition, theapplicability of each scenario was verified using Van Genuchten model, which is the most widely used mathematical model for analyzing soil moisturecharacteristics of reclaimed tideland uplands crops. The required water supply according to the target soil moisture tension by reclaimed tideland is asfollow. In the case of SL, soil depths of 0∼10 cm, 10∼20 cm were analyzed as 19 mm, 35 mm to reach the field capacity, and SiCL, 33 mm, 63mm. The required water supply of SiCL was higher than that of SL. The study compared the simulation results from the scenarios of Van Genuchenmodel and the measured results from the laboratory model test based on according to the reclaimed tidelands. In the case of parameter, θs, θr, α, ηwere analyzed 0.55, 0.18, 0.064, 1.74 in SL and 0.46, 0.22, 0.105, 1.92 in SiCL. In terms of soil characteristics, SL with better water permeabilitywas found to have higher applicability than SiCL. By Soil depth, applicability was found in 0∼10 cm directly affected by water supply.
Abstract
The laboratory model test was conducted by dividing domestic reclaimed tideland into Sandy Loam (SL) and Silt Clay Loam (SiCL) to estimate soilmoisture change and water supply according to soil characteristic when establishing irrigation plan for reclaimed tideland upland crop. In addition, theapplicability of each scenario was verified using Van Genuchten model, which is the most widely used mathematical model for analyzing soil moisturecharacteristics of reclaimed tideland uplands crops. The required water supply according to the target soil moisture tension by reclaimed tideland is asfollow. In the case of SL, soil depths of 0∼10 cm, 10∼20 cm were analyzed as 19 mm, 35 mm to reach the field capacity, and SiCL, 33 mm, 63mm. The required water supply of SiCL was higher than that of SL. The study compared the simulation results from the scenarios of Van Genuchenmodel and the measured results from the laboratory model test based on according to the reclaimed tidelands. In the case of parameter, θs, θr, α, ηwere analyzed 0.55, 0.18, 0.064, 1.74 in SL and 0.46, 0.22, 0.105, 1.92 in SiCL. In terms of soil characteristics, SL with better water permeabilitywas found to have higher applicability than SiCL. By Soil depth, applicability was found in 0∼10 cm directly affected by water supply.
참고문헌 (26)
- Multimodeling with Pedotransfer Functions. Documentation and User Manual for PTF Calculator (CalcPTF) ver. 3.0, "Andrey, K. G.", Environmental Microbial and Food Safety Laboratory Beltsville Agricultural Research Center, ~ (2010)
- Hydraulic properties of porous media, "Brooks, R. H.", Colorado State University, ~, pp.Hydrology Paper No. 3 (1964)
- Eom, K. C., "Model equations to estimate the soil water characteristics curve using scaling factor", Korean Journal of Soil Science and Fertilizer, 28, pp.227~232 (1995)
- 허승오, "난지권 화산회토양의 토색별 토양수분 특성곡선 및 단일화 추정모형", 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer), 39(6), pp.329~333 (2006), 한국토양비료학회
- 허승오, "인위적으로 변경된 토양에서의 수분보유특성 해석 모형의 적용", 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer), 43(6), pp.823~827 (2010), 한국토양비료학회
- 강종범, "부분포화토의 함수특성", 대한토목학회 논문집C, 22(5-C), pp.535~543 (2002), 대한토목학회
- 김선학, "강우제현 모형실험과 SWCC Cell 실험에 의한 화강암질 풍화토의 함수특성곡선", 지질공학, 18(4), pp.523~535 (2008), 대한지질공학회
- Kim, S. N., "Analysis of influence by soil watercharacteristic curve and permeability-suction relationship for the water flow in unsaturated soil", Korean Society of Hazard Mitigation, 3(2), pp.119~125 (2003)
- Koo, J. W., "Determining irrigation requirements and water management practices for normal growth of dry field crops in reclaimed tidelands", Journal of Korean Society of Agricultural Engineers, 34(4), pp.80~96 (1992)
- KRC, "A Study on the Desalination and Artificial Vegetation for Reclaimed Land by Soil Conditioner", ~ (2016)
- 이혜지, "흙의 구조적 특성을 고려한 화강풍화토의 함수특성곡선 산정에 관한 연구", 대한토목학회 논문집C, 25(4C), pp.249~258 (2005), 대한토목학회
- 2014 Performance Evaluation of Agriculture, Food and Rural Affairs Projects (I) In-depth Evaluation of Farm Competitiveness in the Field, "MAFRA", ~ (2014)
- Mualem, Y., "A new model for predicting the hydraulic conductivity of unsaturated porous media", Water Resources Research, 12(3), pp.513~522 (1976)[DOI]
- Nash, J. E., "River flow forecasting through conceptual models Part 1-A discussion of principles", Journal of Hydrology, 10(3), pp.282~290 (1970)[DOI]
- NGII, "The National Atlas of Korea", ~ (2017)
- Nyle, C. B., "Elements of the Nature and Properties of Soils" (2009), Prentice Hall
- Kim, S. J., "Elements of Nature and Properties of Soils" (2015), Kyobobook
- RDA, "A Look into Recalimed Land Soil", ~ (2013)
- Seo, D. W., "Salt Transport Model of Unsaturated Soil in Reclaimed Land", pp.2011
- 서미진, "Interpreting in situ Soil Water Characteristics Curve under Different Paddy Soil Types Using Undisturbed Lysimeter with Soil Sensor", 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer), 50(5), pp.336~344 (2017), 한국토양비료학회[DOI]
- Son, J. G., "Soil salt prediction modeling for the estimation of irrigation water requirem ents f or d ry f ield c rops i n r eclaim ed t idelands", Journal of Korean Society of Agricultural Engineers, 36(2), pp.96~110 (1994)
- 신은철, "불포화 준설매립 지반의 흙-수분 특성곡선 및 불포화 투수계수 예측", 한국지반공학회논문집, 20(1), pp.109~120 (2004), 한국지반공학회
- Statistics Korea (KOSTAT), "Annual Grain Consumption Per Capita Survey", ~ (2018)
- Too, V. K., "Review of soil water retention characteristic (SWRC) models between saturation and oven dryness", Open Journal of Modern Hydrology, 4(4), pp.173~182 (2014)[DOI]
- United States Department of Agriculture (USDA), "Soil mechanics level 1, Module 3. USDA Textural Classification Study Guide", National Employee Development Staff, Soil Conservation Service, U. S. Department of Agriculture, ~ (1987)
- Van Genuchten, M. T., "A closed-form equation for predicting the hydraulic conductivity of unsaturated soils", Soil Science Society of America Jouranl, 44(5), pp.892~898 (1980)[DOI]