摘要
【目的】受胁水鸟是湿地生境质量的关键指示物种。构建受胁水鸟生境网络,有助于保护区域水鸟多样性,提升湿地生态系统功能。【方法】以苏州市域为研究区,选取2022年受胁水鸟分布点及相关环境变量数据,运用MaxEnt模型评价受胁水鸟生境适宜性,在此基础上结合斑块重要性指数识别生境源地,利用电路理论确定廊道并判定生境夹点和生境障碍点,构建苏州市受胁水鸟生境网络。【结果】①2022年苏州市受胁水鸟生境适宜性良好,其中高适宜生境呈显著破碎化。②受胁水鸟生境源地31处,总面积为196.55km^(2),空间分布呈现组团特征,分别聚集在长江、阳澄湖、澄湖和太湖沿岸。③受胁水鸟生境廊道62条,总长为705.55km,其中高阻力廊道9条,低阻力廊道53条,廊道适宜宽度为600m。④50处生境夹点和28处生境障碍点对受胁水鸟的迁移扩散产生重要影响。【结论】研究期间苏州市受胁水鸟生境适宜性良好。探索了生境网络定量构建方法,提出了生境网络优化建议,为地区生物多样性保护及应对地区生境变化提供科学参考。
[Objective]Threatened waterbirds are key indicator species of wetland habitat quality.Constructing a habitat network of threatened waterbirds is conducive to protecting regional waterbird diversity and enhancing the function of wetland ecosystem.[Method]Taking Suzhou municipal area as the study area,the distribution points and related environmental variable data of threatened waterbirds in 2022 were selected,and habitat suitability of threatened waterbirds was evaluated by MaxEnt model.On this basis,combined with the patch importance index,habitat source areas were identified and corridors were determined by using circuit theory,and habitat pinch points and barrier points were identified to construct a habitat network of threatened waterbirds in Suzhou.[Result](1)The habitat suitability of threatened waterbirds in Suzhou in 2022 was good,and the highly suitable habitats were significantly fragmented.(2)There were 31 habitat source areas,with a total area of 196.55 km^(2),and their spatial distribution presented a cluster feature,gathering along the Yangtze River,Yangcheng Lake,Cheng Lake and Taihu Lake,respectively.(3)There were 62 habitat corridors with a total length of 705.55 km,including 9 high-resistance corridors and 53 low-resistance corridors.The appropriate width of the corridors was 600 m.(4)50 habitat pinch points and 28 habitat barrier points were found to have significant impacts on the migration and dispersal of threatened waterbirds in the region.[Conclusion]During the study period,the habitat suitability of threatened waterbirds in Suzhou is good.The quantitative construction method of habitat network is explored,and suggestions for the optimization of habitat network are put forward.This study provides scientific reference for regional biodiversity conservation and response to regional habitat changes.
作者
朱颖
马奥
冯育青
李欣
吴燕飞
ZHU Ying;MA Ao;FENG Yuqing;LI Xin;WU Yanfei(School of Architecture and Urban Planning,Suzhou University of Science and Technology,Suzhou 215011,Jiangsu,China;National Positioning Observation and Research Station of Taihu Wetland Ecosystem,Suzhou 215000,Jiangsu,China;Suzhou Wetland Conservation and Management Station,Suzhou 215100,Jiangsu,China)
出处
《浙江农林大学学报》
北大核心
2025年第4期802-812,共11页
Journal of Zhejiang A&F University
基金
教育部人文社会科学研究项目(23YJAZH231)
江苏省研究生实践创新计划项目(SJCX23_1757)
苏州科技大学风景园林学学科建设项目
江苏省企业研究生工作站项目
江苏太湖湿地生态系统国家定位观测研究站资助项目
