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J Korean Soc Environ Eng > Volume 38(12); 2016 > Article
J Korean Soc Environ Eng 2016;38(12): 641-646. doi: https://doi.org/10.4491/KSEE.2016.38.12.641
토양측정망 확대 지점의 토양 유기물 함량 연구
이소진, 김진주, 정승우
군산대학교 환경공학과
Analysis of the Organic Matter Content for Soil Samples Taken at the New Points of Korea Soil Quality Monitoring Network
Sojin Lee, Jinjoo Kim, Seung-Woo Jeong
Department of Environmental Engineering, Kunsan National University
Corresponding author  Seung-Woo Jeong ,Tel: 063-469-4767, Fax: 063-469-4964, Email: swjeong@kunsan.ac.kr
Received: September 5, 2016;  Revised: December 5, 2016;  Accepted: December 9, 2016.  Published online: December 31, 2016.
Soil organic matter (SOM) is an important soil component releasing nutrients to the plants and reducing risks of soil contamination to the human and ecosystem. Much attention has been recently paid to SOM investigation and management because SOM holds the most of carbon in the earth and sequestrate carbon as a sink tank. The first objective of the study was to investigate SOM of 495 soil samples taken at the Korea Soil Quality Monitoring Network. Soil samples were collected from 16 regions and 8 land use types. The second objective of the study was to find a relationship between the Tyurin method and loss-on-ignition (LOI) method for SOM. The means of SOM by Tyurin and LOI methods were 1.90 and 2.92 % (w/w), respectively. Land uses such as forest, religious area and park where organic matters continuously supply to normally showed higher SOMs than residential and school areas having sandy soils. A regression equation of the relationship between Tyurin and LOI methods was y(Tyurin) = 0.6257x(LOI) + 0.0602 (P-value < 0.001). The coefficient of determination was R2 = 0.749, relatively linearly related. Although LOI may result in higher SOMs than the Tyurin method, LOI may be a preference for the SOM investigation if various kinds of land uses and many soil samples should be measured.
Key Words: Soil Organic Matter, Tyurin Method, Loss-on-ignition, Land Use
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