Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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Calculation of Soil Carbon Changes by Administrative District with Regard to Land Cover Changes

토지피복변화에 따른 행정구역별 토양 탄소 변화량 산정

  • Choo, Innkyo (Department of Advanced Science and Technology Convergence, Kyungpook National University) ;
  • Seong, Yeonjeong (Department of Advanced Science and Technology Convergence, Kyungpook National University) ;
  • Shiksha, Bastola (Department of Advanced Science and Technology Convergence, Kyungpook National University) ;
  • Jung, Younghun (Department of Disaster Prevention and Environmental Engineering, Kyungpook National University)
  • Received : 2021.02.08
  • Accepted : 2021.02.25
  • Published : 2021.03.01
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Abstract

This study aimed to calculate the amount of change in soil carbon due to changes in land cover. Among the various soil carbon models, the InVEST Carbon Storage and Sequestration module was used. LULC is one of the leading factors affecting soil carbon. Therefore, this study compared the total amount of soil carbon due to changes in LULC in 2000 and 2010 across the Republic of Korea, and calculated the changes in each administrative district (city). Changes in LULC in Korea were mainly due to the increase in developed and dry areas and the decrease in grassland, indicating changes in soil carbon. The total amount of soil carbon changes in South Korea has been reduced by 11.48 (millions) in 10 years. The amount of soil carbon by administrative region decreased in most cities and provinces, but Jeju Island, in exception, showed an increase in soil carbon. Among the cities and provinces except Jeju Island, Seoul showed the smallest decrease, with a decrease of 0.033 (million t). On the contrary, the largest number of attempts to decrease was to Gyeongsangbuk-do, which saw a total decrease of 2.893 (million t). Jeju Island is the only soil carbon-increasing area with an increase of 0.547 (millions) and the agricultural area has increased 2.1 times in 10 years. In the case of soil carbon, the construction of ground observation data at the national unit is insufficient, and verification will need to be carried out through linked analysis using multiple models in the future.

본 연구는 토지피복의 변화에 따른 토양 탄소의 변화량을 산정하고자 하였다. 다양한 토양탄소 모형가운데 InVEST Carbon Storage and Sequestration 모듈을 사용하였다. 토지피복은 토양 탄소에 영향을 주는 대표적인 인자 중 하나이다. 따라서 본 연구에서는 대한민국 전역을 대상으로 2000년과 2010년의 토지피복 변화에 따른 토양 탄소의 총량을 비교하였으며, 각 행정구역별(시도)의 변화량을 산정하였다. 대한민국의 토지피복 변화는 주로 시가 및 건조지역의 증가와 초지의 감소 등으로 나타났으며, 이로 인한 토양 탄소의 변화를 나타냈다. 대한민국의 총 토양 탄소 변화량은 10년 사이 11.48(million t) 감소한 것으로 나타났다. 행정구역별 토양탄소량은 대부분의 시도에서 감소를 나타냈으나, 예외적으로 제주도는 토양탄소량이 증가한 것으로 나타났다. 제주도를 제외한 시도 중 감소량이 제일 적은 시도는 서울로 나타났으며, 감소량은 0.033(million t)으로 나타났다. 반대로 가장 많은 감소량을 보인 시도는 경북으로 총 2.893(million t)이 감소하였다. 제주도는 유일한 총 토양 탄소 증가 지역으로 0.547(million t)이 증가하였으며, 10년 사이 농업지역이 2.1배 증가함을 보였다. 토양탄소의 경우 전국단위의 실측 자료 구축이 부족함을 보이며, 추후 다중 모형을 이용하여 연계분석을 통해 검증을 진행해야 할 것이다.

Keywords

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