DOI: 10.5061/dryad.w9ghx3fz4
title: Data from: Ecological security patterns of migratory bird habitat from the perspective of circuit theory: A case study of Dalian

description: 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.
description: # 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 Data Cloud. Through ENVI and GIS processing, the elevation vector map, coastline data and land use type map of Dalian can be obtained, which can be used as resistance factors. 2\. NDVI2021.tif Source: Geospatial Data Cloud. This paper is used to identify resistance factors and construct resistance surfaces. 3\. Protected area data.exl;Protected area data.shp.Data source: China Nature Reserve Biological Specimen Resource Sharing Platform [http://www.papc.cn/](http://www.papc.cn/), This paper uses secondary data to assist in habitat identification. 4\. gis_osm_roads_free_1.prj Source: OSM. The distance resistance factor from the road was obtained by GIS processing. 5\. gis_osm_railways_free_1.prj The distance resistance factor from the road was obtained by GIS processing. 6\. gis_osm_waterways_free_1.prj . Data source: OSM .The distance resistance factor from the water source is obtained through GIS processing. 7\. gis_osm_water_a_free_1.prj  Data source: OSM .The distance resistance factor from the water source is obtained through GIS processing. 8\. Map data：The map of Dalian is downloaded from Amap's review number: GS Jing (2022) No. 1061 The review number of the map of China is GS (2020) No. 4619 Sixth Tone migratory bird migration [https://www.thepaper.cn,the](https://www.thepaper.cn,the) review number of the base map world map is GS (2016) No. 1562 ## Sharing/Access information Data type                         Data accuracy                   Data source Bird species in Dalian City China Bird Watching Record Center（[http://www.birdreport.cn/）](http://www.birdreport.cn/）) Dalian Nature Reserve A biological specimen resource sharing platform for nature reserves in China ([http://www.papc.cn/](http://www.papc.cn/)) Digital elevation model(DEM) 2021  30m Geospatial data cloud Normalized difference vegetation index(NDVI) 2021  30m Geospatial data cloud Current land use classification 2021  30m Geospatial data cloud for remote sensing image interpretation Dalian city coastline vector map 2021  30m Geospatial data cloud for remote sensing image interpretation River networks, road networks, building data 1km [https://www.openstreetmap.org/](https://www.openstreetmap.org/) Population density data      10km             [https://landscan.ornl.gov/](https://landscan.ornl.gov/) ## Code/Software This article is no-code to use.