한국농림기상학회지, 제 15권 제3호(2013) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 15, No. 3, (2013), pp. 161~170
DOI: 10.5532/KJAFM.2013.15.3.161
ⓒ Author(s) 2014. CC Attribution 3.0 License.


사면에서 지형분석을 통한 토양수분 시공간 회귀분석

송태복(1), 김상현(1), 이연길(2), 정성원(2)
(1)부산대학교 공과대학 사회환경시스템공학부, (2)유량조사사업단

(2013년 08월 19일 접수; 2013년 09월 15일 수정; 2013년 09월 17일 수락)

Spatio-temporal Regression Analysis between Soil Moisture
Measurements and Terrain Attributes at Hillslope Scale

Tae-Bok Song(1), Sang-Hyun Kim(1), Yunghil Lee(2), Sungwon Jung(2)
(1)Department of Civil and Environmental Engineering, Pusan National University, Busan
(2)Hydrologic Survey Center, Ilsan, Kyongido

(Received August 19, 2013; Revised September 15, 2013; Accepted September 17, 2013)

ABSTRACT
Spatio-temporal distribution of soil moisture was studied to improve understanding of hydrological processes at hillslope scale. Using field measurements for three designated periods during the spring, summer and autumn seasons in 2010 obtained from Beomryunsa hillslope located at the Sulmachun watershed, correlation analysis was performed between soil moisture measurements and 18 different terrain attributes (e.g., curvatures and topographic index). The results of correlation analysis demonstrated distinct seasonal variation features of soil moisture in different depths with different terrain attributes and rainfall amount. The relationship between predicted flow lines and distribution of the soil moisture provided appropriate model structures and terrain indices.

Keyword: Soil moisture . Hillslope hydrology . Correlation analysis . Topographic analysis . Spatio-temporal distribution

MAIN

적요

이 논문에서는 산지사면에서 나타나는 수문과정의 이해를 증진하기 위해서 관측된 토양수분의 분포와 거동을 수치지형분석을 통한 지형요소와의 상관관계를 연구하였다. 계절에 따른 강우 및 토양구조의 차이가 영향을 주는 사면 깊이 별 토양수분의 변동을 상관성분석을 통해 도출하였다. 경기도 파주시 설마천 유역에 위치하고 있는 사면에서 봄, 여름, 가을 등 각 3계절을 대상으로 4월, 7월, 10월 기간의 토양수분 시 계열 관측 자료를 사용하여, 지표면과 기반암의 표고모형을 사용하여 다방향 흐름 알고리즘과 경사도, 곡률 등 18개 요소와의 상관관계를 분석하였다. 도출된 지형과 토양수분의 상관관계는 계절별로 강우의 양상과 토양 깊이에 따라 상이한 양상을 보여 주고 있다. 이러한 상관관계를 통해 사면에서 토양수분의 분포 및 흐름선을 예측하여 공간적인 분석을 도모하고, 토양수분의 거동을 가장 적합하게 모사하는 모형과 지형요소를 평가하고 도출할 수 있을 것이다.

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