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연산일반균형(CGE) 모형을 이용한 기후변화에 따른 전세계 작물 생산성 변화의 파급영향 분석
권오상 ( Oh-sang Kwon ),이한빈 ( Hanbin Lee ) 한국환경경제학회, 한국자원경제학회 ( 구 한국환경경제학회 ) 2013 한국환경경제학회 학술발표논문집 Vol.2013 No.하계
This study analyzes the economic impacts of crop productivity change that will be caused by global climate change. It is also investigated whether liberalizing crop trade will exacerbate or offset the losses from climate change. Applying the PEP-w-1 global CGE model using the GTAP 8 DB shows that most of the welfare effects are generated by the change in crop productivity, and trade liberalization plays very limited role as far as the change in world GDP is concerned. However, it is also found that trade liberalization affects welfare in several regions where their protection rates are high. Moreover, crop production and self-sufficiency in each region are substantially affected by trade liberalization even if welfare in the region is affected very little because of product substitution.
The Relationship between Farm Characteristics and Farm Productivity
김영준(Youngjune Kim),이한빈(Hanbin Lee) 한국농업경제학회 2020 農業經濟硏究 Vol.61 No.3
Farm productivity is important since it determines the quantity of food supplied and the income of farms in the economy. Using two 5-year farm-level panel dataset that is rich in farm-specific characteristics, our goal is to explore the relationship between farm characteristics and farm productivity. For this goal, first, we estimate farm-specific productivity. Given estimated productivity, second, we select characteristics that substantially explain variations of farm-specific productivity across time, using Least Absolute Shrinkage and Selection Operator (LASSO), an emerging variable selection method. The results indicate that farm types, and income and expenditure variables, such as primary farming, subsistent farming, profit margin, operator’s age, and rent are most strongly associated with farm-specific productivity.