온실가스 배출량을 고려한 송어 양식업의 양식방법별 경제성 비교 분석

Abstract

Global warming caused by greenhouse gas (GHG) emissions is accelerating worldwide and the importance of responsible responses is being raised. As a part of reducing GHG emissions in the fisheries sector, this study conducted an economic analysis with consideration of GHG emissions on rainbow trout aquaculture. In particular, targeting rainbow trout aquaculture, this study estimated GHG emissions and conducted an economic evaluation including GHG emissions from its aquaculture. The environmental and economic data necessary for the analysis were obtained from field surveys. As a result of estimating GHG emissions, the average GHG emission from trout aquaculture was 7.14 kg CO2 eq/kg and the GHG emission from recirculating aquaculture system (RAS) was estimated to be lower than that from flow through system (FTS). The major GHG emission sources were electricity and feed. Results of economic analysis showed that the average NPV and IRR would be 1.3 billion won and 18%, respectively. The economic feasibility of RAS was evaluated higher than that from FTS. Sensitivity analysis assuming the carbon pricing system also showed that economic feasibility would exist, however, it was analyzed that the NPV with carbon tax would be decreased by approximately 24%.