Study on the effect of habitat function change on waterbird diversity and guilds in Yancheng coastal wetlands based on structure-function coupling
Study on the effect of habitat function change on waterbird diversity and guilds in Yancheng coastal wetlands based on structure-function coupling
复制标题
基于结构-功能耦合的盐城滨海湿地栖息地功能变化对水鸟多样性及类群的影响研究
DOI：
10.1016/j.ecolind.2020.107223
复制
发表时间：
2021-03-01
影响因子：
6.9
通讯作者：
Zhang, Yanan
中科院分区：
文献类型：
--
作者：
Wang, Cheng;Wang, Gang;Zhang, Yanan
近年来，由于人类活动和全球气候变化，新设立的世界自然遗产地盐城滨海湿地水鸟栖息地数量和面积不断萎缩，水鸟栖息地功能不同程度退化，水鸟种群和栖息地安全受到威胁。因此，本研究利用空间主成分分析（SPCA）对区域尺度的水鸟栖息地功能进行了评估。根据主成分载荷矩阵和冗余分析（RDA）方法，揭示了栖息地功能变化的驱动力及其对水鸟群落和多样性的影响机制。结果表明，1987年至2019年生境功能最高和高等级面积持续下降，生境功能最低和低等级面积持续增加。水鸟分布区总体栖息地功能较高，但不同栖息地内的功能等级明显下降。 1987—2019年影响盐城滨海湿地生境功能变化的主要驱动因素为生境类型、生境面积、生境多样性、生境破碎化、居住区数量和围垦强度。这些驱动因素对水鸟行业种群多样性和分布的影响是不同的。最后提出了盐城滨海湿地水鸟栖息地功能维护和关键节点恢复的对策建议。
In recent years, due to human activities and global climate change, the number and area of waterbird habitats in Yancheng coastal wetlands, a newly established world natural heritage site, have been shrinking, the function of the waterbird habitats has been degraded to varying degrees, and the safety of waterbird populations and habitats has been threatened. Therefore, in this study, waterbird habitat functions at the regional scale were assessed by using spatial principal component analysis (SPCA). According to the load matrix of principal components and the Redundancy analysis (RDA) method, the driving force of habitat function change and the mechanisms of their effects on waterbird guilds and diversity were revealed. The results showed that the areas of the highest and high habitat function grades continued to decline from 1987 to 2019, and the areas of the lowest and low grades of habitat function continued to increase. The overall habitat functions in the waterbird distribution areas were high, but the functional grades within different habitat sites were obviously decreasing. The main driving factors affecting habitat function change in Yancheng coastal wetlands from 1987 to 2019 were habitat types, habitat area, habitat diversity, habitat fragmentation, number of residential areas and reclamation intensity. The effects of these driving factors on the population diversity and distribution of waterbird guilds were different. Finally, countermeasures and suggestions for the functional maintenance and key node restoration of waterbird habitats in Yancheng coastal wetlands were proposed.