## 1 Introduction  
In the process of accelerating urbanization, due to human interference with nature, ecosystems are facing degeneration in terms of structure and function [1]. The serious problems of habitat fragmentation and isolation have thus become major threats to biodiversity [2]. How to achieve coordination between ecological environment and urban development has become a world concern in the process of urbanization. Urban ecological networks, which are composed of an ecological source area and corridors, represent one of the most important methods for integrating landscape structure with ecological functions and processes [3]. The establishment of ecological networks is indispensable for overcoming the fragmentation of habitats, protecting biodiversity, and achieving sustainable development, which will lay a good foundation for establishing a harmonious relationship between mankind and nature [4]. Ecological networks find a wide number of applications in ecology and urban planning owing to their good connectivity [5, 6]. The connections between various animal habitats help promote individual movement and dispersal, maintain population dynamics, and enhance genetic diversity [7]. Indeed, recent studies have shown that ecological fragmentation of landscapes disrupts the continuity of ecological corridors and diminishes the survival of plant and animal species [8, 9]. In Jiangsu Province, China, wetland development has caused fragmentation of habitats for waterbirds, hence dramatically reducing the population of the endangered red-crowned crane from over 1200 individuals in 2002 to about 400 in recent years [10]. In the 1990s, [PERSON] introduced the concept of the patch-corridor-substrate model, suggesting that ecological corridors serve as a crucial measure for ecological spatial planning. This model plays a very important role in urban planning because planners use it to demarcate and protect key ecological areas as \"patches\" while enhancing ecological urban connectivity through \"corridors\" like greenways. The diversity and resistance of urban ecosystems increase, while the matrix concept balances urban development with ecological protection and promotes sustainable development [11]. [PERSON]'s 2008 research on the Green River Basin corridor in the Netherlands, and the results showed that the ecological corridor not only maintained the development of natural ecology but also promoted the relationship between ecology and politics [12]. In recent studies, for example, [PERSON] (2023) used a combination of ecological sensitivity and ecosystem service value to determine habitat sources, avoiding the interference of a single method in the judgment [13]. Certain academics employ the MCR model to develop patterns of ecological security through the creation of an ecological network system, aiming to harmonize the safeguarding of natural ecosystems with sustainable urban growth [14; 15]. The construction of an urban ecological network is of great significance to urban development. First, the urban fabric disrupts the connections between ecological patches, hindering ecological flows across the region. Thus, constructing an ecological network ensures the normal migration of species and facilitates species exchange between ecological patches [16; 17]. Second, the Baiyang Lake wetland, along with other connected water systems within the Xiongan New Area, contributes to environmental improvements in high-density urban areas, helps regulate the microclimate, and provides recreational opportunities for residents visiting the wetlands [18]. Moreover, the Baiyang Lake wetland has sencic beauty and offers significant aesthetic value, which can foster tourism, attract talent, and promote further industrial development, all of which are beneficial to the future growth of the Xiongan New Area [19]. Despite this, existing research often places greater emphasis on the identification of ecological source areas and corridors, while the focus on the hierarchical management of ecological networks is insufficient [20].