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2020 Vol.62, Issue 4 Preview Page
Analysis of Soil Moisture Changes in Reclaimed Tideland Using Van Genuchten Model

Van Genuchten 모델을 활용한 간척지의 토양수분변화 분석

Dae-Hee Koa
,
Jae-Gwon Sonb
,
Gi-Sung Leec
,
Jeong-Kyun Kimd
,
Jae-Do Songe†
,
Young-Jun Parkf
고 대희a
,
손 재권b
,
이 기성c
,
김 정균d
,
송 재도e†
,
박 영준f
aResearcher, Graduate School of Agricultural Engineering, Chonbuk National University
bProfessor, Dept. of Agricultural and Rural Engineering, Chonbuk National University
cResearcher, Graduate School of Agricultural Engineering, Chonbuk National University
dResearcher, Graduate School of Agricultural Engineering, Chonbuk National University
eLecturing Professor, Dept. of Agricultural and Rural Engineering, Chonbuk National University
fResearcher, Rural Research Institute, Korea Rural Community Corpoeration (KRC)
a전북 대학교 농업 공학 대학원 연구원
b전북 대학교 농업 농촌 공학과 교수
c전북 대학교 농업 공학 대학원 연구원
d전북 대학교 농업 공학 대학원 연구원
e전북 대학교 농업 농촌 공학과 강의 교수
f한국 농어촌 공사 (KRC) 농촌 연구소 연구원
† Corresponding author Tel.: +82-10-7438-0692 Fax: +82-63-270-2517 E-mail: song352@naver.com
2020. pp. 53-61
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Abstract

The laboratory model test was conducted by dividing domestic reclaimed tideland into Sandy Loam (SL) and Silt Clay Loam (SiCL) to estimate soil moisture change and water supply according to soil characteristic when establishing irrigation plan for reclaimed tideland upland crop. In addition, the applicability of each scenario was verified using Van Genuchten model, which is the most widely used mathematical model for analyzing soil moisture characteristics of reclaimed tideland uplands crops. The required water supply according to the target soil moisture tension by reclaimed tideland is as follow. 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, 63 mm. The required water supply of SiCL was higher than that of SL. The study compared the simulation results from the scenarios of Van Genuchen model and the measured results from the laboratory model test based on according to the reclaimed tidelands. In the case of parameter, θs, θr, α, η were 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 permeability was found to have higher applicability than SiCL. By Soil depth, applicability was found in 0~10 cm directly affected by water supply.

Keywords
Van Genuchten model
laboratory model test
soil moisture changes
reclaimed tideland
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Information
  • Publisher :The Korean Society of Agricultural Engineers
  • Publisher(Ko) :한국농공학회
  • Journal Title :Journal of Korean Society of Agricultural Engineers
  • Journal Title(Ko) :한국농공학회논문집
  • Volume : 62
  • No :4
  • Pages :53-61
  • Received Date : 2019-12-26
  • Revised Date : 2020-07-06
  • Accepted Date : 2020-07-13
  • DOI :https://doi.org/10.5389/KSAE.2020.62.4.053
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