Yancheng coastal wetland, as an important part of the East Asian–Australasian Flyway, provided habitat for more than 200 migratory waterbirds by rest and over-winter. After it was listed as a “World Heritage List” in 2019, the protection of waterfowl habitat in Yancheng coastal wetland has attracted extensive attention from the international community. As an indicator species of Yancheng coastal wetland ecosystem health, waterbirds have practical significance for the protection of Yancheng coastal wetlands. Due to the long-term impact of human activities, the waterbird habitats are facing the threat of habitat fragmentation and lose, posing a serious challenge to its survival and diversity. Based on the survey data obtained , , and waterbirds during the whole years from 2017 to 2021, this paper used the Maxent software for modeling species niches and distributions, a comprehensive evaluation method based on fuzzy mathematics, and Linkage Mapper model to assess the habitat suitability distribution of waterbirds, identify protection gaps and potential biological corridors for waterbirds in Yancheng coastal wetland. The results showed that habitat suitability and anthropogenic disturbance were the decisive factors affecting habitat selection of waterbirds. The suitable habitats for , , and waterbirds were 23868, 22670, and 24870 ha, respectively. The suitable habitat area of waterbirds was 121,930 ha, concentrated on the study area's central and southern coast. Sheyang estuary was identified as a vital conservation gap in the study area. Meanwhile, biological corridors of a total of 33 waterbirds were identified in the study area. The longest biological corridor was 18.78 km, and the shortest was 0.09 km. Our research can provide scientific support for Yancheng coastal wetland protection and the improvement of waterbird diversity, together with the achievements of an ecological and sustainable situation between environmental conservation and economic development.

中文翻译：

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盐城滨海湿地水鸟栖息地适宜性及潜在生物廊道

盐城滨海湿地作为东亚—澳大拉西亚迁徙路线的重要组成部分，为200余只候鸟水鸟提供了休息和越冬的栖息地。2019年被列入《世界遗产名录》后，盐城滨海湿地水禽栖息地的保护引起了国际社会的广泛关注。水鸟作为盐城滨海湿地生态系统健康的指示物种，对于盐城滨海湿地的保护具有现实意义。由于人类活动的长期影响，水鸟栖息地正面临栖息地破碎化和丧失的威胁，对其生存和多样性构成严重挑战。基于2017年至2021年全年的水鸟调查数据，利用Maxent软件对物种生态位和分布进行建模，基于模糊数学的综合评价方法和Linkage Mapper模型对栖息地适宜性进行评估水鸟分布，识别盐城滨海湿地水鸟保护差距和潜在的生物廊道。结果表明，生境适宜性和人为干扰是影响水鸟生境选择的决定性因素。、 、 、 水鸟适宜栖息地面积分别为23868公顷、22670公顷和24870公顷。水鸟适宜栖息面积为121930公顷，主要集中在研究区中部和南部海岸。射阳河口被确定为研究区重要的保护缺口。同时，研究区内共发现了33种水鸟的生物廊道。最长的生物廊道为18.78公里，最短的为0.09公里。我们的研究可为盐城滨海湿地保护、水鸟多样性改善提供科学支撑，实现环境保护与经济发展之间的生态可持续发展。