《环境昆虫学报》

近年来，因人类生产生活及城市建设等多种因素，生物栖息地受到严重破坏，萤火虫数量急剧下降，三叶虫萤Emeiapseudosauteri等物种生存受到严重威胁。三叶虫萤是中国特有的萤火虫物种，对生境条件要求较高，主要分布于湿地、溪流沿岸等水陆交错区域，对环境变化高度敏感。它不仅是典型的生态环境指示物种，还能反映生物多样性状况及生态系统健康水平。本研究以浙江省丽水市大溪流域为研究区，基于MaxEnt模型预测三叶虫萤的生境适宜性，确定生态源地，并结合电路理论和最小成本路径方法，提取生态廊道、生态夹点和生态障碍点，以识别适宜三叶虫萤扩散的生态通道和潜在阻碍区域。在此基础上，构建“生态源地—综合阻力面—生态廊道—生态夹点及障碍点”相结合的生态网络，并提出针对性的栖息地保护与修复策略。研究共识别36个生态源地、57条关键生态廊道、28条潜在生态廊道、37个生态夹点和55个生态障碍点，形成以湿地与河流为核心、结构相对完整的生态网络。研究结果表明，大溪流域整体生态连通性较好，但仍存在部分阻力值较高的区域，需通过生态修复和景观优化措施提升整体连通性，促进三叶虫萤的扩散与栖息地稳定。研究成果为三叶虫萤栖息地保护提供理论支持，有助于提升改善生态环境质量，同时，也为湿地和水域生物栖息地修复提供了方法和实践经验，对丽水及浙江省的生态保护与可持续发展具有重要参考价值。

英文摘要:

In recent years, due to human activities such as urban development and land use, natural habitats have been severely degraded, leading to a rapid decline in firefly populations, including the endemic species Emeiapseudosauteri, which now faces serious survival threats. As a firefly species unique to China, E. pseudosauteri has strict habitat requirements and is mainly distributed in wetland and streamside ecotones, making it highly sensitive to environmental changes. It serves as a typical indicator species of ecological health and biodiversity. This study focuses on the Daxi River Basin in Lishui City, Zhejiang Province. Using the MaxEnt model, suitable habitats for E. pseudosauteri were predicted, and ecological source areas were identified. Based on circuit theory and the minimum cost path method, ecological corridors, pinch points, and barriers were extracted to identify suitable diffusion pathways and potential impediments. An integrated ecological network was then constructed by combining ecological sources, resistance surfaces, corridors, pinch points, and barriers, followed by the development of targeted habitat protection and restoration strategies. A total of 36 ecological sources, 57 key corridors, 28 potential corridors, 37 pinch points, and 55 barrier points were identified, forming a relatively intact network centered on wetlands and rivers. The results indicate that the overall ecological connectivity in the Daxi River Basin is relatively good, but certain areas still exhibit high resistance, which should be mitigated through ecological restoration and landscape optimization to enhance connectivity and support the stable distribution of E. pseudosauteri. The findings provide theoretical support for the conservation of firefly habitats and contribute practical methods and experience for wetland and aquatic ecosystem restoration, offering valuable references for ecological protection and sustainable development in Lishui and Zhejiang Province.

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