Water-Land-Food Nexus for Sustainable Agricultural Development in Main Grain-Producing Areas of North China Plain.

In central Anhui Province, the water–land–food matching degree in 2020 is clearly on a positive trend, mainly influenced by the increase in precipitation in that year.

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The overall situation of water–land–food matching degree is characterized by “worse in the north and better in the south”, and generally, the imbalance in the water–land–food nexus between regions and provinces in the main grain-producing areas of North China is extremely significant. 4.

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The results show the following: (1) The Gini coefficient presents an increasing trend in the NCP, indicating an increasing imbalance in the water–land matching degree among inter-regions.

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who found that the coupling degree of water–energy–land–food (WELF) in most provinces in China is at a barely coordinated stage and in a decreasing trend [ 31 ].

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