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2025 Vol.58, Issue 11S-2

Research Article

Assessment of environmental stability in waterfront spaces based on water quality and vegetation under hydrological condition

수문조건에 따른 친수공간의 수질-식생 기반의 환경적 안정성 평가

Sangung Leea
,
Jongmin Kimb
,
Hong Koo Yeoc
,
Young Do Kimd*
이 상웅a
,
김 종민b
,
여 홍구c
,
김 영도d*
aPh.D Student, Department of Civil and Environmental Engineering, Myongji University, Yongin, Korea
bPh.D Student, Department of Civil and Environmental Engineering, Myongji University, Yongin, Korea
cSeinor Research Fellow, Department of Hydro Science and Engineering Research, Korea Institute of Civil Engineering and Building Technology, Goyang, Korea
dProfessor, Division of smart Infrastructure Engineering, Myongji University, Yongin, Korea
a명지대학교 토목환경공학과 박사과정
b명지대학교 토목환경공학과 박사과정
c한국건설기술연구원 수자원하천연구본부 선임연구위원
d명지대학교 스마트인프라공학부 교수
*Corresponding Author
30 November 2025. pp. 1217-1227
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Abstract

Recent changes in rainfall patterns due to climate change and alterations in land cover caused by urbanization have exerted complex impacts on the environmental conditions of waterfront spaces. Waterfront areas are highly sensitive to hydrological and water quality changes such as floods, droughts, and nonpoint source pollution; therefore, it is essential to assess the effects of rainfall and water level fluctuations on vegetation and water quality. In this study, the variability of suspended solids and vegetation indices was analyzed under different hydrological conditions. SS concentrations showed a sharp increase in exceedance rate compared to normal conditions when the water level change exceeded 0.5 m and rainfall intensity was high, whereas SS concentrations decreased under conditions of both low rainfall and low water level change. The relationship between NDVI change rates and land cover types was evaluated for various rainfall conditions, and SS exceedance rates were calculated relative to normal conditions to compare pollution levels. Under low-rainfall conditions, grassland and water areas exhibited substantial declines in NDVI, which were attributed to soil moisture deficits and the influence of nonpoint source pollution. As rainfall amounts increased, NDVI values recovered and the rate of decline was mitigated.

Keywords
NDVI
Suspended solids
Hydrological factors
Waterfront

최근 기후변화로 인한 강우 패턴의 변동성과 도시화로 인한 토지피복 변화는 친수공간의 환경에도 복합적인 영향을 미치고 있다. 친수공간은 홍수, 가뭄, 비점오염 등 수문·수질 변화에 민감하게 반응하므로, 강우와 수위 변동이 식생과 수질에 미치는 영향을 파악하는 것이 필요하다. 본 연구에서는 수문인자의 조건별 부유물질과 식생지수 변동성을 분석하였다. SS는 수위 변화량이 0.5 m 이상이고 강우강도가 높은 조건에서 SS 변화율이 정상상태 대비 급격하게 증가하였으며, 강수와 수위 변화가 모두 낮은 조건에서는 SS 농도가 감소하였다. 강우 조건별 NDVI 변화율과 토지피복 유형 간의 관계를 평가하고, SS 변화율을 정상상태 대비 산정하여 오염도 변화를 비교하였다. 저강수 조건에서 초지와 수역의 NDVI 감소율이 크게 나타났으며, 이는 토양 수분 부족과 비점오염 유입 영향으로 판단된다. 강우량이 증가할수록 NDVI가 회복되고 감소율이 완화되었다.

키워드
NDVI
부유물질
수문인자
친수공간
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Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 58
  • No :11
  • Pages :1217-1227
  • Received Date : 2025-08-11
  • Revised Date : 2025-10-13
  • Accepted Date : 2025-10-13
  • DOI :https://doi.org/10.3741/JKWRA.2025.58.S-2.1217
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