## 1 Introduction  
Ecosystem services encompass the diverse material resources and environmental conditions that ecosystems provide to sustain global life systems. These services, categorized into provisioning, regulating, cultural, and supporting functions, constitute fundamental prerequisites for organism survival and human wellbeing enhancement [1]. Ecosystem service value (ESV), quantitatively representing the ecological benefits humans obtain from ecosystems [2], has emerged as a pivotal metric for evaluating ecosystem security and facilitating sustainable development. The methodological framework for ESV assessment has undergone substantial refinement since [PERSON] et al. (1997). [3] pioneered the economic valuation approach. Subsequent landmark work by [PERSON] et al. (2003). [4] established a China-specific terrestrial ecosystem evaluation system that has become a benchmark for domestic studies [5]. Contemporary research has expanded the methodological repertoire, investigating spatio-temporal dynamics [6; 7] and underlying drivers [8; 9] while increasingly integrating ESV with ecological risk assessment [10] and ecosystem health evaluation [11]. Landscape pattern, serving as a crucial indicator of regional ecological integrity, characterizes the spatial configuration, scale, and geometry of landscape components [12]. Its temporal evolution embodies the complex interplay between anthropogenic activities and natural systems, predominantly mediated through land use/cover changes [13]. Structural variations in landscapes directly modulate the typology, magnitude, and quality of ESV, as heterogeneous landscape units deliver differentiated ecosystem functions. Land use, being the spatial manifestation of human socioeconomic activities, has exerted progressively intensifying pressures on ecological systems amid technological progress and urban expansion [14; 15]. The accelerated urbanization process has significantly altered landscape patterns and ecosystems functionalities, thereby reshaping ESV distributions [16]. Deciphering these intricate relationships is paramount for achieving equilibrium between ecological conservation and socioeconomic advancement. The spatial heterogeneity of landscapes governs material flows and energy transfer within ecosystems, fundamentally regulating ecological processes [17; 18]. Perturbations to landscape architecture may compromise ecosystem functionality and consequently modify ESV [19; 20]. This causal linkage has stimulated growing scholarly interest in landscape-ESV interactions [21; 22], with recent investigations spanning diverse geographical contexts including urban agglomerations [23; 24; 25; 26], river basins [27; 28; 29], wetland systems [30; 31; 32], and coastal regions [33]. These studies reveal that different landscape types contribute unevenly to ESV and that landscape changes can have either positive or negative impacts on ecosystem value. Since its establishment in 2017, Xiong'an New Area assumes strategic importance in decentralizing Beijing's non-capital functions and fostering coordinated development within the Beijing-Tianjin-Hebei megalopolis [34]. Xiong'an possesses distinctive ecological assets, most notably the Baiyangdian Wetland--the largest freshwater wetland in North China. However, intensive urbanization has precipitated dramatic transformations in Xiong'an's landscape configuration, raising pertinent questions about its capacity to realize ecologically sustainable development. Current scholarship on Xiong'an has predominantly examined land use change characteristics [35], ESV assessment methodologies [36], and landscape pattern dynamics [37] as isolated phenomena, leaving significant knowledge gaps regarding their synergistic relationships and mutual feedback mechanisms.