한국농림기상학회지, 제 7권 제1호(2005) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 7, No. 1, (2005), pp. 51~56
ⓒ Author(s) 2014. CC Attribution 3.0 License.


산립유역내 강우 발생시 계류수질변화와 지중유출수의 기여도

김수진(1), 정용호(2), 김경하(2), 유재윤 (2), 정창기(2), 전재홍(2)
(1)연세대학교 대기과학과/지구환경 연구소
(2)국립산렴과학원 임지보전과

(2005년 01월 24일 접수; 2005년 03월 29일 수락)

Change of Stream water Chemistry and Contribution of
Subsurface Discharge in Forest Catchment during Storm Events

Su-Jin Kim(1), Yongho Jeong(2), Kyongha Kim(2), Jaeyun Yoo(2), Changgi Jeong(2), Jaehong Jun(2)
(1)Department of Atmospheric Sciences, Global Environment Laboratory,
College of Natural Sciences, Yonsei University, Seoul, Korea
(2)Forest Water Resources Lab. Korea Forest Research Institute, Seoul, Korea

(Received January 24, 2005; Accepted March 29, 2005)

ABSTRACT
To understand the chemical changes in the streamwater and contribution of subsurface discharge during the storm event, we analyzed electric conductivity (EC), anions, and cations in Gwangneung deciduous and coniferous forest catchment. The stream water samples were collected three times in 2004 by using an auto-sampler: September 7-9 (E040907-D and -C; where D and C indicate deciduous and coniferous forest catchment, respectively), September 11-13 (E040911-D and -C), and September 16-18 (E040916-D and -C). We found a negative relationship between discharge intensity and EC in streamwater. The E040911 and E040916 showed slack change of stream discharge in comparison to E040907 due to contribution of base flow recharged by much precipitation. Moreover, NO3- concentrations in E040911-C were highest, which may have resulted from forest management such as thinning in 2004. The relationship between pH and alkalinity in stream water showed that much of stream water have been recharged through subsurface. We conclude that subsurface discharge highly influences streamwater quality in a forested catchment, and the seperation of stream water discharge is therefore necessary to sustainable water management.

Keyword: Forest catchment, Streamwater, Storm event, pH and alkalinity, Subsurface discharge

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