[Construction of Ecological Security Pattern Based on Landscape Ecological Risk Assessment: A Case Study of Beijing Ecological Conservation Area].

Establishing ecological security patterns (ESP) is crucial for enhancing ecological conservation capacity in urban ecosystems and advancing sustainable ecological development in peri-urban regions. Based on the optimal landscape scale determination, this study conducted a landscape ecological risk assessment in the Beijing's ecological conservation zone and integrated results with InVEST, morphological spatial pattern analysis (MSPA), and circuit theory to construct an ESP centered on three core components: ecological sources, ecological corridors, and ecological pinch points. The main conclusions are as follows: ① There were 63 ecological sources with a total area of 1 923.83 km2 (17% of the total area). These sources exhibited a clustered distribution in the northeast and fragmented patterns in west and south. ② There were 152 ecological corridors (including 11 identified as important) with a total length of 2 042.02 km, demonstrating hierarchical spatial configurations. There were 35 ecological pinch points concentrated in central-western transitional zones. In contrast, 59 barrier points were predominantly located in human-impacted peripheries. ③ This study proposes an ESP framework characterized as "one core, two axes, four belts, and multiple points" based on the identified pattern elements. Targeted ecological restoration strategies accompany this framework to enhance ecological stewardship and promote green development within the capital's conservation areas.