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| Evolution trend on concentration of oil-bearing crops production region in China from 1991 to 2022 |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.240409 |
| KeyWord:oil-bearing crops oil-bearing crops industry concentration index production layout grain and oil security |
| FundProject:2022年度贵州省哲学社会科学规划项目(22GZYB20) |
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| Abstract: |
| Timely understanding the evolution trend on concentration of oil-bearing crops production region in China, it is of significance to optimize the oil-bearing crops production layout and ensure the stabilization of oil-bearing crops products supply as well as national food security. Basing on the provincial date of oil-bearing crops production from 1991 to 2022 and using the concentration index of Lorenz curve, the dynamic evolution trend of oil-bearing crops production layout from the perspective of oil-bearing crops industry and variety was quantitatively analyzed. The results showed that from the perspective of oil-bearing crops industry,the centralization degree of oil-bearing crops production region showed an upward trend obviously from 1991 to 2022, and the trend of spatial agglomeration of oil-bearing crops production region strengthened. There were significant differences toward impact on the dynamic evolution of oil-bearing crops industry layout in different provinces, and Henan, Hubei, Sichuan, Hunan and Shandong played a leading role in spatial agglomeration of oil-bearing crops industry. From the perspective of variety, the concentration level of peanut production showed a downward trend, presenting a "falling-rising-falling-rising-falling" evolutionary process, the concentration level of rapeseed production showed a rising trend, presenting a "wave rising-smoothly rising" evolutionary process. Producing areas of peanut and rapeseed both showed a certain degree of location migration, peanut was gradually concentrated to Henan, Shandong, Guangdong and Liaoning, and rapeseed was gradually concentrated to Sichuan, Hubei and Hunan. It is recommended to stabilize and enrich the supply of oilseed raw materials and their sources, steadily grasp and optimize the production capacity and production layout of the main oilseed producing areas, such as peanut and rapeseed, so as to safeguard the security of China′s oil-bearing crops industry and the security of grain and oil. |
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