Fig. 5: LISA of second-level codes (top three in frequency). The figure is based on the standard map GS (2023)2767 in the Standard Map Service website of the Ministry of Natural Resources of the People’s Republic of China, with no modifications of the boundaries in the standard map.

(The figure includes 12 subgraphs, corresponding to the top three second-level codes in frequency under Overall Strategy (OS), Planning Guarantee (PG), Policy Orientation (PO), and Support System (SS) (e.g., OS: ECO represents the ecology code under Overall Strategy). Different colors are used to distinguish High-High Cluster, Low-Low Cluster, High-Low Outlier, Low-High Outlier, and Not Significant areas, showing the local spatial autocorrelation distribution characteristics of each second-level code’s frequency in space, and marking the excluded study areas).