黄河三角洲互花米草种群时空动态变化分析  

Analysis of the Spatiotemporal Dynamics of the Spartina alterniflora Population in the Yellow River Delta

作　　者：曹竞丹 代文章 夏露 张天歌 冯虹毓 安树青[1] 刘常宏[1] 冷欣[1] CAO Jing-dan;DAI Wen-zhang;XIA Lu;ZHANG Tian-ge;FENG Hong-yu;AN Shu-qing;LIU Chang-hong;LENG Xin(School of Life Science,Nanjing University,Nanjing 210023,Jiangsu,China)

机构地区：[1]南京大学生命科学学院,江苏南京210023

出　　处：《湿地科学与管理》2025年第2期31-37,52,共8页Wetland Science & Management

基　　金：国家重点研发计划项目(2022YFC3204304);苏州市科技局社会发展科技创新面上项目(2022SS36)。

摘　　要：互花米草(Spartina alterniflora)作为入侵物种对生态系统造成了极大的影响,遥感作为植被监测的有效工具可监测互花米草扩散过程。本文基于黄河三角洲Landsat遥感影像数据集,分析河口湿地中互花米草种群扩张的动态变化。结果表明:研究区内互花米草入侵面积不断增大,由2009年的0.07 km^(2)增至2018年的33.79 km^(2)。其种群质心整体向东南方向迁移,并呈现出向海洋和陆地的双向扩张趋势。通过转移桑基图发现,互花米草2010—2015年的快速扩张时期主要占据了研究区光滩和水体,2015—2018年侵占碱蓬种群实现进一步扩张,并存在与芦苇种群相互转化的情况。互花米草在黄河三角洲地区的种群时空动态分析,为后续制定其管控策略提供理论依据。The invasive species Spartina alterniflora has had a profound impact on the ecosystem of the Yellow River Delta.Remote sensing,as an important method for vegetation monitoring,was used to track the diffusion of Spartina alterniflora.Using a Landsat remote sensing image dataset,we comprehensively analyzed the dynamic changes in Spartina alterniflora's expansion in estuarine wetlands.The results indicated that the invasion area of Spartina alterniflora has steadily increased,expanding into the low-tide zones along the northern and southern banks of the current Yellow River estuary,with a predicted distribution area reaching 4118.15 hm^(2) by 2020.ding from 0.07 km^(2) in 2009 to 33.79 km^(2) in 2018.The centroid of the population generally shifted southeastward,exhibiting a bidirectional expansion trend toward both the sea and the land.Through the analysis of the Sankey flow diagram,it is observed that during the rapid expansion period of Spartina alterniflora from 2010 to 2015,it primarily colonized the mudflats and water bodies within the study area.From 2015 to 2018,further expansion occurred,invading Suaeda salsa populations,with notable transformations are also occurring between Spartina alterniflora and Phragmites australis populations.The spatiotemporal changes in the Spartina alterniflora population within the Yellow River Delta area offer a foundational theory for the subsequent development of management and control measures.

关 键 词：互花米草 遥感 黄河三角洲 河口湿地 植被更替 

分 类 号：Q948[生物学—植物学]