Ecological security pattern construction of Fuzhou based on source-resistance-corridor

In the report, based on the remote sensing ecological index, the landscape ecological characteristics of Fuzhou during the past 20 years were investigated, and the ecological sources with different levels were identified using an ecological sensitivity evaluation index system. Five resistance factors which are derived from natural and social dimensions were selected to construct a comprehensive resistance surface. The critical ecological components which include circuit theory model identifying ecological corridors were used to construct the Fuzhou's ecological security framework. The results indicated that the identified ecological source areas in Fuzhou covered approximately 2992.38 km², accounting for 25.97% of the total area, and which display a spatial distribution characterized by higher density in the west and lower density in the east. A total of 78 ecological corridors were identified, with a spatial pattern of dense distribution in the central and western regions and sparse distribution in the southeast. The ecological pinch points covered an area of 12.83 km², which are concentrated in the northern and northwestern regions with higher ecological quality, while the ecological obstacle points covered 31.68 km², and which are primarily located in the main urban area of Fuzhou.