In this study, a digital terrain analysis had been performed for a mountainous watershed having wetlands. In order to consider the impact for wetland in the flow determination algorithm, the Laplace equation is implemented into the upslope accounting algorithm of wetness computation scheme. The computational algorithm of wetland to spatial contribution of downslope area and wetness was also developed to evaluate spatially distributed runoff due to the presence of wetland. Developed schemes were applied to Wangpichun watershed located Chuncuk mountain at Ulzingun, South Korea. Both spatial distribution of wetness and its histogram indicate that the developed scheme provides feasible consideration of wetland impact in spatial hydrologic analysis. The impact of wetland to downslope propagation pattern is also useful to evaluate spatially distributed runoff distribution.

Abstract
 1. 서 론
 2. 연구지역 및 수치지형자료
  2.1. 연구지역
  2.2. 수치지형자료
  2.3. 습지자료의 공간분포
 3. 방법론
  3.1. 수문 습윤 지수(Hydrologic Wetness Index)
  3.2. 습윤지수의 계산
  3.3. 습지처리 알고리즘
  3.4. 산지 습지의 유출기여산정
 4. 결과
  4.1. 수치지형분석
  4.2. 습지별 히스토그램 분석
 5. 결론
 REFERENCE

• 장은세(부산대학교 환경공학과) | Eun-Se Jang (Dept. of Environmental Engineering, Pusan National University)
• 이은형(부산대학교 환경공학과) | Eun-Hyung Lee (Dept. of Environmental Engineering, Pusan National University)
• 김상현(부산대학교 환경공학과) | Sang-Hyun Kim (Dept. of Environmental Engineering, Pusan National University) Corresponding author