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| Temporal and spatial changes of five major oil crops in China from 1979 to 2019 |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.230525 |
| KeyWord:oil crops temporal and spatial changes peanut rapeseed sunflower seed sesame flaxseed |
| FundProject:河南省科技攻关项目（232102110205） |
| Author Name | Affiliation | | LI Zhongfeng, ZHAO Kai, GONG Fangping, ZHANG Xingguo,
MA Xingli, REN Rui, QIU Ding, ZHANG Lin, YIN Dongmei | LI Zhongfeng, ZHAO Kai, GONG Fangping, ZHANG Xingguo,
MA Xingli, REN Rui, QIU Ding, ZHANG Lin, YIN Dongmei |
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| Abstract: |
| To provide reference for exploring the potential for increasing oil crops yield, improving oil production, and ensuring the safety of domestic food and vegetable oil supply, the temporal and spatial changes of five major oil crops (peanut, rape, sunflower, sesame and flax) from 1979 to 2019 were studied through analysis of distribution concentration and comparative advantage. The results showed that from 1979 to 2019, the distribution concentration had a decreasing trend in peanut production, but an increase trend in rape and flax, while for sunflower and sesame the distribution concentration firstly decreased and then increased. In 2019, the comprehensive advantage indexes of peanut in Henan, Shandong, Guangdong, Liaoning, Hebei exceeded 1. Among them, Henan Province was the first producer of peanut in China, with the gradually increasing comprehensive advantage indexes from 0.80 to 193. Hunan, Sichuan, Hubei, Guizhou and Anhui had stable comprehensive advantages in rape production, and of them the Sichuan-Chongqing region, Hubei and Hunan ranked in the top three in rapeseed production. In 1979-2019, Inner Mongolia and Xinjiang displayed the comprehensive advantage in sunflower production with the index of 2.14-3.38 and 1.64-3.06, respectively. In 2019, they were the first and the second major sunflower seed production regions. Henan and Hubei were the two core regions of sesame production in China, with comprehensive advantage indexes ranging from 1.50 to 2.13 and 2.17 to 239, respectively. Gansu, Ningxia, Shanxi and Inner Mongolia showed comprehensive advantages in flax production, among which Gansu, Inner Mongolia and Ningxia ranked in the top three in flaxseed production in 2019. In summary, Henan, Sichuan-Chongqing, Inner Mongolia, and Gansu are currently the core oilseed production areas for peanut (and sesame seed), rapeseed, sunflower seed and flaxseed, respectively in China. |
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