As a whole, the food security level of China shows a decreasing trend from east to west, in which the provinces and regions with high food security in 2010 include Heilongjiang Province and Henan Province, etc.
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Research on the spatio-temporal coupling relationship between agricultural green development efficiency and food security system in China.
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6 , the coupling coordination degree of the two systems in 2010 showed an overall trend of decreasing from east to west.
The results show that from 2010 to 2021, China's agricultural green development efficiency showed a trend of continuous improvement, with the eastern region maintaining a high level and the western region improving significantly.