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- W2980348043 abstract "This study is exploratory research on a relationship between changes in cultivated area of major crops and farm income by regions. We investigated level of income, volatility of income, and migration of suitable region by climate changes as factors influencing changes in cultivated area. Research processes are as follows. First, we classify the regions where cultivated areas are expanded or reduced through the trends of cultivated area by region and crop during recent 10 years. Second, we compare the changes in income related factors between groups during the same periods. Finally, the results from portfolio analysis show changes in stable income-based optimal crops. From these procedures, we found that the changes in cultivated area are not simply explained by income-related factors. In cases of vegetables, however, we also found that high volatility of income could contribute to reduce cultivated area of the crops. The results from portfolio analysis are not always consistent in all of cases. This means that crop selection can be decided by other factors than stable income." @default.
- W2980348043 created "2019-10-25" @default.
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- W2980348043 date "2019-08-31" @default.
- W2980348043 modified "2023-09-26" @default.
- W2980348043 title "An Exploratory Study on a Relationship between Changes in Cultivated Area of Major Crops and Farm Income by regions1 - From Comparative Analysis to Optimal Portfolio Analysis -" @default.
- W2980348043 doi "https://doi.org/10.14771/aim.11.1.2" @default.
- W2980348043 hasPublicationYear "2019" @default.
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