Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of Runoff Impact by Land Use Change - Using Grid Based Kinematic Wave Storm Runoff Model (KIMSTORM) -

토지이용의 변화가 홍수유출에 미치는 영향분석

  • 김성준 (건국대학교 사회환경시스템공학과) ;
  • 박근애 (건국대학교 대학원 지역건설환경공학과) ;
  • 전무갑 (농업기반공사)
  • Published : 2005.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study is to assess the quantitative effect of stream discharge due to land use changes. The upstream watershed of Pyeongtaek gauging station of Anseong-cheon ($592.6\;km^2$) was adopted. To accomplish the purpose, firstly, trace land use changes for the selected watershed which have some changes of land use by using Landsat images of 1986 and 1999 of the watershed and secondly, analyse the quantitative effect of stream discharge due to land use changes by applying GIS- based distributed hydrologic model KIMSTORM. The model was calibrated and verified at 2 locations (Pyeongtaek and Gongdo) by comparing observed with simulated discharge results for 7 storm events from 1998 to 2003. Model output was designed to provide information of land use impact on runoff components in the watershed and the sensitivity of impact level of each land use category on storm runoff. Land use impact was evaluated with the land use data sets for 1986 and 1999 for the same rainfall condition (160.5 mm). Area decrease of 4.8 percent of forest and 4.0 percent of paddy field during 13 years (1986 - 1999) within the watershed caused a 30.3 percent increase of peak runoff and a 9.3 percent increase of runoff volume.

본 연구는 안성천의 평택수위관측소 상류유역을 대상으로 점진적인 도시화로 인한 토지피복변화가 수문변화에 미치는 영향을 분석하고자 하였다. 이를 위해 1986년과 1999년 Landsat TM 영상을 사용하여 최우도법에 의해 토지피복도를 작성하였으며, 토지이용의 변화에 따른 하천유출량의 정량적 변화를 모의하기 위해서는 격자기반의 분포형 강우유출모형인 KIMSTORM모형(김성준 등, 1998)을 사용하였다. 1998년에서 2003년까지 총 7개의 강우사상을 선정하여 평택과 공도 두 지점에 대하여 모형을 보정 및 검정하였다. 1986년을 기준으로 1999년에 대한 하천유출량 변화는 유역내 $4.8\%$의 산림면적과 $4.0\%$의 논면적이 감소한 상태에서, 160.5mm의 강우조건에서 평택수위관측소 지점의 첨듀유출량이 $30.3\%$, 총유출량은 $9.3\%$ 증가한 것으로 나타났다.

Keywords

References

  1. 김성준 (1998). '격자기반의 운동파 강우유출모형 개발(I)-이론 및 모형-', 한국수자원학회논문집, 제31권, 제3호, pp.303-308
  2. 김성준, 채효석, 신사철 (1998). '격자기반의 운동파 강우유출모형 개발(II)-적용예-', 한국수자원학회논문집, 제31권, 제3호, pp.309-315
  3. 안성시 (1987, 2000). 안성시 통계연보
  4. Beven, K. J. (1982). 'On subsurface stormflow: Predictions with simple kinematic theory for saturated and unsaturated flows.' Water Resources Research, Vol. 18, No. 6, pp. 1627-1633 https://doi.org/10.1029/WR018i006p01627
  5. Moore, I. D. and Burch, G. J. (1986). 'Sediment transport capacity of sheet and rill flow: Application of unit stream power theory.' Water Resources Research, Vol. 22, No. 8, pp. 1350-1360 https://doi.org/10.1029/WR022i008p01350
  6. Moore, I. D. and Foster, G. R. (1990). 'Hydraulics and overland flow.' In Process Studies in Hillslope Hydrology, Anderson, M. G. and Burt, T. P., eds. New York, N.Y.: John Wiley, pp. 215-254
  7. Nash, J. E. and Sutcliffe, J. V. (1970). 'River flow forecasting through conceptual models, Party I- A discussion of principles.' Journal of Hydrology, Vol. 10, pp. 283-290 https://doi.org/10.1016/0022-1694(70)90255-6
  8. Rawls, W. J., Brakensiek, D. L. and Saxton, K. E. (1982). 'Estimation of soil water properties.' Trans, of ASAE. Vol. 25, pp. 1316-1320, 1328 https://doi.org/10.13031/2013.33720
  9. Sloan, P. G. and Moore, I. D. (1984). 'Modeling subsurface stormflow on steeply sloping forested watersheds.' Water Resources Research, Vol. 20, pp. 1815-1822 https://doi.org/10.1029/WR020i012p01815

Cited by

  1. Analysing the effect of impervious cover management techniques on the reduction of runoff and pollutant loads vol.24, pp.1, 2015, https://doi.org/10.14249/eia.2015.24.1.16