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2022 Vol.55, Issue 10 Preview Page

Research Article

A study on the selection of priority management watershed for the restoration of water cycle

물순환 회복을 위한 우선관리유역 선정 방안에 대한 연구

Jaemoon Kima
,
Jongseok Baekb
,
Jaerock Parkc
,
Byungwoo Parkd
,
Hyunsuk Shine*
김 재문a
,
백 종석b
,
박 재록c
,
박 병우d
,
신 현석e*
aAssociate Research, Green Land and Water Management Research Institute, Pusan National University, Busan, Korea
bAssociate Research, Advanced Infrastructure Department, Korea Institute of Hydrological Survey, Goyang, Korea
cAssociate Research, Green Land and Water Management Research Institute, Pusan National University, Busan, Korea
dGeneral Manager, K-water Education Dispatch, Busan, Korea
eProfessor, School of Urban, Architecture and Civil Engineering, Pusan National University, Busan, Korea
a부산대학교 녹색국토물관리연구소 전임연구원
b한국수자원조사기술원 첨단인프라실 전임연구원
c부산대학교 녹색국토물관리연구소 전임연구원
d한국수자원공사 인재개발원 부장
e부산대학교 건설융합부 토목공학과 교수
*Corresponding Author
31 October 2022. pp. 749-759
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Abstract

The paradigm of water cycle management in the watershed is changing due to the increase in abnormal climate phenomena caused by climate change and the increase in impervious area due to urbanization. Research is continuously underway based on Low Impact Development technology that can suppress water cycle distortion. In this study, factors that can reflect water cycle distortion were selected before applying LID, and the PSR index for each 148 watershed was calculated for the the Nakdonggang River basin. As of 1975, the PSR index is calculated by calculating the pressure index P, which represents the rate of change in impervious surface area to 2019, the phenomenon index S, which represents the rate of change in water cycle for each subwatershed, and the Low Impact Development area countermeasure index R. The lower PSR index value, the higher the priority management watershed, and the water cycle recovery priority management watershed was calculated in the order of 1, 2, 87, 90, 91, and 147. It is expected that the efficient application of low-impact development factors in accordance with the order of priority management of water cycle by subwatershed in the large area will contribute to the recovery of water cycle distortion.

Keywords
Water cycle
Water cycle restoration
PSR framework
HSPF

기후변화로 인한 이상기후 현상 증가와 도시화로 인한 불투수면의 증가로 인해 유역 물순환 관리 패러다임이 변화하고 있는 실정이다. 국내외에서는 물순환 왜곡현상을 억제해 줄 수 있는 저영향개발기술을 기반으로 연구가 지속적으로 진행중이다. 본 연구에서는 저영향개발 적용을 하기에 앞서 물순환 왜곡현상을 반영할 수 있는 요소 P, S, R값을 산정하여, 낙동강 유역을 대상으로 148 소유역별 PSR 지수를 산정하였다. PSR지수는 토지피복도 1975년을 기준으로 2019년 현재까지의 불투수면 변화율을 나타내는 압력지수 P, 기준에서 현재까지 각 소유역별 물순환 변화율을 나타내는 현상지수 S, 현시점에서 저영향개발 적용가능 면적 대책지수 R을 산정하여, 표준거리 d값 산정을 통해 PSR지수를 산정한다. PSR 지수값이 낮을수록 우선관리 유역에 해당하며, 물순환 회복 우선 관리 유역으로는 1(서낙동강A), 2(낙동강하구언), 87(신천하류), 90(금호강하류), 91(진천천), 147(서낙동강B) 등 순으로 산정되었다. 대권역내 소유역별 물순환 우선관리 순서에 따라 효율적으로 저영향개발요소를 적용하면 물순환 왜곡현상 회복에 기여할 것으로 사료된다.

키워드
물순환
물순환회복
PSR framework
HSPF
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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 : 55
  • No :10
  • Pages :749-759
  • Received Date : 2022-04-27
  • Revised Date : 2022-09-15
  • Accepted Date : 2022-09-15
  • DOI :https://doi.org/10.3741/JKWRA.2022.55.10.749
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