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2022 Vol.32, Issue 4 Preview Page

Research Article

Comparison of Soil Permeability and Time-Series Variation of Soil Moisture in Areas with Different Land Use in an Agricultural Region of Gangwon Province, Korea

강원도 농촌지역에서 토지이용에 따른 토양수분의 시계열적 변동 특성 및 토양 투수성 비교

Minwook Lee1
,
Sungbeen Lee1
,
Jin-Yong Lee2*
이 민욱1
,
이 성빈1
,
이 진용2*
1Master Student, Department of Geology, Kangwon National University
2Professor, Department of Geology, Kangwon National University
1강원대학교 지질학과 석사과정
2강원대학교 지질학과 교수
*Corresponding Author
31 December 2022. pp. 483-498
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Abstract

토양수분은 불포화대의 공극 내에 존재하는 물로 정의되며, 다양한 수문학적 과정과 밀접하게 연관되어 있다. 본 연구에서는 지하수에 대한 의존도가 높은 농촌지역인 연구지역을 덮고 있는 6가지의 토지이용에 따른 토양수분 함량 및 토양 투수성 비교를 통해 토양수분에 영향을 미치는 요인을 파악하여 향후 연구에 유용한 자료를 제공하는 것을 목적으로 한다. 시계열 자료를 이용하여 자기상관분석, 스펙트럼 밀도분석 및 교차상관분석을 수행하였다. 토양수분 함량은 약한 자기상관성 및 기억효과를 가지며, 강수량이 토양수분 함량에 상당한 영향을 미치는 것으로 사료된다. 토지이용 변화에 따라 포화 수리전도도는 크게 변화하지 않으며, 대신 불균질한 토양의 구조에 의하여 영향을 받는 것으로 보인다.

키워드
토지이용
토양수분
시계열분석
토양 투수성
해안면

Soil moisture is defined as water in the pores of the soil’s unsaturated zone, and it is closely related to various hydrological processes. This study aims to provide meaningful data by identifying factors affecting soil moisture through comparing soil moisture content and soil permeability in a study area covering six different land use types in an agricultural region that is highly dependent on groundwater. We conduct auto-correlation analysis, spectral density analysis, and cross-correlation analysis using time-series data. Soil moisture content shows to have weak auto-correlation and memory effects, and precipitation appears to have a substantial influence on soil moisture content. Saturation hydraulic conductivity does not vary markedly with changing land use, and instead appears to be affected by the inhomogenous soil structure.

Keywords
land use
soil moisture
time-series analysis
soil permeability
Haean-myeon
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Information
  • Publisher :Korean Society of Engineering Geology
  • Publisher(Ko) :대한지질공학회
  • Journal Title :The Journal of Engineering Geology
  • Journal Title(Ko) :지질공학
  • Volume : 32
  • No :4
  • Pages :483-498
  • Received Date :2022. 09. 30
  • Revised Date :2022. 11. 11
  • Accepted Date : 2022. 11. 17
  • DOI :https://doi.org/10.9720/kseg.2022.4.483
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