Evolutionary characteristics and influencing factors of non-grain of cultivated land in main grain-producing areas-A case study of Lianyungang City, China.

(2) the level of non-grain of cultivated land showed a spatial pattern of high along the north-west-south-east and decreasing to the two sides, and the pattern showed a trend of gradual weakening, with Moran’s I decreased from 0.90 to 0.42.

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Grain and greenhouse vegetable cultivation areas show a decreasing trend, and the two have a more significant inter-conversion relationship.

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The area of forest planting, aquaculture in pits and ponds, construction and development, and abandonment have all shown an increasing trend.

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The conversion of cultivated land for grain and greenhouse vegetable cultivation has been more critical, and the area of non-cultivated land has changed more drastically, with the area of greenhouse vegetable cultivation decreasing and the rest of the types increasing, indicating that the phenomenon of non-food cultivation of cultivated land has continued to deepen and that there is a clear trend towards non-food cultivation.

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