Ecological security patterns of migratory bird habitat from the perspective of circuit theory: A case study of Dalian

Dalian is an important \"transit station\" for migratory birds in the East Asian-Australasian flyway,located at the throat of the habitat of migratory birds in the Yellow (Bohai) Sea, and is an important stop,foraging and breeding place for migratory birds in the long-distance migration process.Based on the idea of Land-sea integration, this study aims to promote the improvement of the ecological environment of migratory bird habitats, enhance species diversity, and strengthen population exchange, identify the habitat security pattern in the \"transit station\" area, and put forward restoration suggestions. By selecting important habitat patches from the MSPA model, landscape connectivity analysis, and important bird habitats in Dalian, the random movement of birds was simulated through circuit theory, and the ecological corridors and important corridor nodes of migratory birds were identified to construct a habitat security pattern. The results of the study identified the ecological reserv..., , , # Data from: Ecological security patterns of migratory bird habitat from the perspective of circuit theory: A case study of Dalian [https://doi.org/10.5061/dryad.w9ghx3fz4](https://doi.org/10.5061/dryad.w9ghx3fz4) In this paper, DEM data were used to identify land use types, and some habitats were identified through MSPA and landscape connectivity analysis, which were supplemented with protected area data. The resistance surface was constructed using DEM, land use type, NDVI, river network, road network, coastline data, and population density data. Ecological corridors and nodes are identified through circuit theory, and the ecological security pattern is constructed. ## Description of the data and file structure 1.DEM:ASTGTM2_N38E120_num.tif(2021);ASTGTM2_N38E121_num.tif(2021);ASTGTM2_N39E121_num.tif(2021);ASTGTM2_N39E122_num.tif(2021);ASTGTM2_N39E123_num.tif(2021);ASTGTM2_N40E121_num.tif(2021);ASTGTM2_N40E122_num.tif(2021);ASTGTM2_N40E123_num.tif(2021).1. Data source: Geospatial...