Spatiotemporal Pattern Evolution of Food and Nutrient Production in China.

From 1995 to 2000, the vegetable production of Shandong, Henan, Hebei, and Hubei accounted for 49.32% of the increase of national vegetable production, so the gravity center of vegetable production shifted 79 km from west to north, at an angle of 89°; from 2000 to 2005, the national vegetable production showed an increasing trend, but the vegetable production of Heilongjiang, Beijing, Shanxi, and Jilin decreased by 0.03 × 10 8 tons, so the gravity center of vegetable production shifted 31 km from west to south, at an angle of 29°; from 2005 to 2010, the vegetable production of Henan, Jiangsu, Hunan, and Sichuan accounted for 108.18%, 77.37%, 63.47%, and 60.51% of the increase of national vegetable production, respectively.

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Vegetables During 2000–2020, the gravity center of vegetable production had a significant trend moving southwest, and it was always located in Henan.

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