【摘要】 在全球气候变化与生态危机加剧的背景下，辽河口国家公园作为我国最典型、最完整的滨海湿地生态系统，正面临城市扩张、农业开发和人类活动干扰的多重压力。文章以1980—2020年多期土地利用数据为基础，结合In VEST（生境质量模型）和MSPA（形态学空间格局分析），识别辽河口区域关键生态源地，并在生态安全屏障理论框架下，提出因地制宜的多元防护体系策略。结果表明：（1）40年来，辽河口湿地面积减少约47%，滩涂河滩减少约88%，生态空间受到显著挤压；（2）高生境质量的生态源地主要分布于公园核心区及外围湿地斑块。基于以上分析和结果，本文构建了三种以改善湿地连通性和生态完整性为目的的屏障体系，以此为滨海湿地生态安全格局优化及未来国家公园生态修复提供了科学支撑和理论依据。更多还原

【Abstract】 Against the backdrop of intensifying global climate change and escalating ecological crises, Liaohekou National Park, as one of China’s most representative and intact coastal wetland ecosystems, is facing multiple pressures from urban expansion, agricultural development, and human activities. Based on multi-temporal land use data from 1980 to 2020, this study employs the InVEST(Habitat Quality Model) and MSPA(Morphological Spatial Pattern Analysis) to identify key ecological source areas in the Liaohekou region. Within the framework of ecological security barriers, site-specific and multi-layered protection strategies are proposed. The results indicate that:(1) Over the past 40 years, the wetland area of the Liaohekou Estuary has decreased by approximately 47%, and tidal flats and riverine beaches by about 88%, resulting in significant compression of ecological space;(2) Ecological source areas with high habitat quality are mainly distributed in the park’s core zone and peripheral wetland patches. Based on these findings, the study establishes three types of barrier systems aimed at improving wetland connectivity and ecological integrity, which provides scientific support and a theoretical foundation for optimizing the ecological security pattern of coastal wetlands and guiding future ecological restoration in the national park.更多还原