한국농림기상학회지, 제 5권 제2호(2003) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 5, No. 2, (2003), pp. 110~115
ⓒ Author(s) 2014. CC Attribution 3.0 License.


검단산 한계농지에서의 토양발생 CO2 및 질소 유효도

손요환(1), 반지연(1), 김래현(1), 김준(2)
(1)고려대학교 환경생태공학부
(2)연세대학교 대기과학과

Soil CO2 Evolution and Nitrogen Availability on Abandoned
Agricultural Fields at Mt. Kumdan

Yowhan Son(1), Jiyeon Ban(1), Rae-Hyun Kim(1), Joon Kim(2)
(1)Division of Environmental Science and Ecological Engineering, Korea University, Seoul 136-701, Korea
(2)Department of Atmospheric Sciences, Yonsei University, Seoul 120-749, Korea

ABSTRACT
The iufluence of abandonment of agricultural fields on soil carbon and nitrogen dynamics is rarely addressed due to lack of appropriately paired sites. In this study, we identified three sites that have native forest and abandoned rice and crop fields at Mt. Kumdan near Seoul. Currently the vegetation of indigenous forest and the abandoned rice field is deciduous hardwood forest, while that of the abandoned crop field is deciduous shrub. We measured soil $CO_2$ 수식 이미지 evolution and inorganic N availability for the three sites from 25 July 2002 through 24 January 2003. Soil $CO_2$ 수식 이미지 evolution tracked seasonal soil temperature. Mean soil $CO_2$ 수식 이미지 evolution (g $CO_2$ 수식 이미지/$m^2$ 수식 이미지/hr) for the study period was 0.42 for the rice field to forest, 0.50 for the crop field to shrub, and 0.41 for the indigenous forest, respectively. Soil $CO_2$ 수식 이미지 evolution and soil temperature were not different among the sites; however, soil water content was significantly different. Soil water content had a very weak influence on soil $CO_2$ 수식 이미지 evolution. Inorganic resin N availability differed among the three sites and seemed to be related to soil moisture.

Keyword: abandoned agricultural fields, nitrogen availability, soil CO2

MAIN

적요

한계농지 토양 내의 탄소와 질소의 동태에 관한 연구는 적절한 연구 대상지의 부족으로 지금까지 폭 넓게 이루어지지 못했다. 본 연구에서는 서울 근처의 검단산 일대에서 지속적으로 산림이었던 지역, 과거 논으로 이용되었던 지역, 과거 밭으로 이용되었던 지역 등 세 곳의 연구 대상지를 선정하고 여기에서 2002년 7월 25일부터 2003년 1월 24일까지 토양 발생 $CO_2$ 수식 이미지와 무기태 질소의 유효도를 측정하였다. 현재 지속적으로 산림이었던 지역과 과거 논으로 이용되었던 지역은 낙엽활엽수림이고, 과거 밭으로 이용되었던 지역은 낙엽성 관목이 주 식생을 이루고 있다. 토양 발생 $CO_2$ 수식 이미지는 토양 온도의 계절적 변화에 따라 차이를 보였다. 본 연구 기간동안 토양 발생 $CO_2$ 수식 이미지량 (g $CO_2$ 수식 이미지/$m^2$ 수식 이미지/hr)의 평균은 각각 과거 논으로 이용되다. 산림으로 변한 지역이 0.42, 과거 밭으로 이용되다 관목으로 변한 지역이 0.50, 지속적으로 산림이었던 지역이 0.41로 나타났다. 토양 발생 $CO_2$ 수식 이미지와 토양 온도는 연구 지역간에 차이가 나타나지 않았으나 토양 습도는 주목할 만한 차이를 보였고, 토양 발생 $CO_2$ 수식 이미지에 대해 토양 습도는 매우 약한 상관관계를 나타냈다. 무기태 질소의 유효도는 세 곳의 연구 대상지에 따라 차이를 나타냈으며 이는 토양 수분과 관련이 있는 것으로 보인다.

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