Fig 1.
Administrative zoning map of Shenzhen city.
Note: This map is from the standard map produced by GS(2019) No. 1822 of National Geographic Department of Surveying and Mapping of China, and the base map has not been modified.
Table 1.
Evaluation index and weight of land ecological security.
Table 2.
Land ecological security standard and safety level.
Table 3.
Grey prediction GM(1,1) model accuracy test standard.
Fig 2.
The development trend of S+ and S- land ecological security in Shenzhen from 2009 to 2025.
Fig 3.
The development trend of land ecological security in Shenzhen from 2009 to 2025.
Fig 4.
Land ecological security in Shenzhen from 2009 to 2025 subsystem S+ change trend.
Fig 5.
Land ecological security in Shenzhen from 2009 to 2025 subsystem S-change trend subsystem S-change trend.
Fig 6.
Changes in the closeness of the various subsystems of land ecological security in Shenzhen from 2009 to 2025.
Table 4.
Shenzhen city land ecological security Si+, Si- simulation accuracy value.