Data from: 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 reserves, key areas, and areas to be restored in the study
area. Among them, the areas to be restored are graded according to the
importance of ecological security, and targeted restoration strategies are
proposed. The habitat security pattern of migratory birds constructed in
this paper can provide a scientific basis for the protection of migratory
bird habitats.