토양 특성을 이용한 토양유기탄소저장량 산정 모형 개발

초록

Carbon dioxide is one of the major driving forces causing climate changes, and many countries have been trying to reduce carbon dioxide emissionsfrom various sources. Soil stores more carbon dioxide(two to three times) amounts than atmosphere indicating that soil organic carbon emissionmanagement are a pivotal issue. In this study, we developed a Soil Organic Carbon(SOC) storage estimation model to predict SOC storage amountsin soils. Also, SOC storage values were assessed based on the carbon emission price provided from Republic Of Korea(ROK). Here, the SOC modelcalculated the soil hydraulic properties based on the soil physical and chemical information. Base on the calculated the soil hydraulic properties andthe soil physical⋅chemical information, SOC storage amounts were estimated. In validation, the estimated SOC storage amounts were 486,696tons(3.526 kg/m2) in Jindo-gun and shown similarly compared to the previous literature review. These results supported the robustness of our SOCmodel in estimating SOC storage amounts. The total SOC storage amount in ROK was 305 Mt, and the SOC amount at Gyeongsangbuk-do wererelatively higher than other regions. But the SOC storage amount(per unit) was highest in Jeju island indicating that volcanic ashes might influenceon the relatively higher SOC amount. Based on these results, the SOC storage value was shown as 8.4 trillion won in ROK. Even though our SOCmodel was not fully validated due to lacks of measured SOC data, our approach can be useful for policy-makers in reducing soil organic carbonemission from soils against climate changes.

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