Ecological spatial management is the core content of national spatial management. Taking Putian urban area as an example, with the help of GIS spatial analysis technology, ecological sources were identified from ecosystem comprehensive service value and the assessment of soil erosion-water conservation sensitivity. On the basis of the types of ground objects, the ecological resistance surface was modified and using the minimum cumulative resistance model, potential ecological corridors were identified. The ecological sources with corridors constituted a regional ecological network. Based on soil, geomorphology, and land use type, we qualitatively identified the regional landscape character types and units and took the cognitive results as prototypes and foundations to propose optimization strategies for ecological space structure and elements type and combinations. The research results show that: (1) The area of extremely important and important ecological importance was 907 km2, accounting for 40.53%, and 10 primary ecological sources and 5 secondary ecological sources were identified; (2) C-shaped primary ecological corridor and reticulated secondary corridor were constructed; (3) Ten landscape characteristic types were identified, and the key landscape elements and spatial combination characteristics were summarized; (4) Specific strategies are proposed from the aspects of ecological spatial structure optimization, ecological patch construction and ecological corridor construction The method of constructing and optimizing the ecological space network based on the evaluation of ecosystem service value, ecological sensitivity, and landscape characteristics assessment not only helps to enhance regional ecological security but also can strengthen regional characteristics.