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生态学杂志 ›› 2023, Vol. 42 ›› Issue (9): 2218-2226.doi: 10.13292/j.1000-4890.202309.02

• 研究报告 • 上一篇    下一篇

黄河口滨海湿地不同景观类型的潮沟分布特征

张馨1,李雪1,于君宝1*,栗云召1,管博1,周洁1,凌越1,马元庆2


  

  1. 1鲁东大学滨海生态高等研究院, 山东烟台 264025; 2山东省海洋资源与环境研究院, 山东烟台 264006)

  • 出版日期:2023-09-10 发布日期:2023-09-05

Distribution of tidal channels in different landscape types in coastal wetlands of the Yellow River estuary.

ZHANG Xin1, LI Xue1, YU Junbao1*, LI Yunzhao1, GUAN Bo1, ZHOU Jie1, LING Yue1, MA Yuanqing2#br#

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  1. (1Institute for Advanced Study of Coastal Ecology, Ludong University, Yantai 264025, Shandong, China; 2Institute of Shandong Provincial Marine Resource and Environment, Yantai 264006, Shandong, China).

  • Online:2023-09-10 Published:2023-09-05

摘要: 为探究滨海湿地不同景观类型内潮沟分布及其变化,选取2000—2020年黄河口5期遥感影像,结合野外观测数据,对黄河口典型景观类型及其潮沟变化进行分析。结果表明:光滩、芦苇和盐地碱蓬的面积占比都呈减小趋势,景观破碎度增加;互花米草斑块面积在2010—2020年增加38.32 km2;研究时段内潮沟年平均长度表现为光滩>互花米草>盐地碱蓬>芦苇;平均潮沟数量和密度表现为光滩>盐地碱蓬>互花米草>芦苇;2000—2020年,光滩和盐地碱蓬内潮沟长度分别减少15.28和14.35 km,互花米草内潮沟长度增加86.03 km;网络环通度、节点连接度、网络连通度总体在较低水平,光滩、盐地碱蓬、芦苇景观潮沟水系连通性变化不大,互花米草景观内潮沟网络水文连通性在2015—2020年快速增加。


关键词: 黄河口, 滨海湿地, 潮沟, 景观类型, 分布特征

Abstract: We analyzed the typical landscape types and tidal channel changes of different landscape types in the Yellow River estuary, based on five remote sensing images of Yellow River estuary from 2000 to 2020 and field observation data. The area proportions of bare mudflats, Phragmites australis, and Suaeda salsa decreased, while the landscape fragmentation increased. The area of Spartina alterniflora patches increased by 38.32 km2 from 2010 to 2020. The average annual length of tidal channels in different landscape types followed an order of bare mudflats>Spartina alterniflora>Suaeda salsa>Phragmites australis. Average number and density of tidal channels showed as: bare mudflats>Suaeda salsa>Spartina alterniflora>Phragmites australis. From 2000 to 2020, the length of tidal channels in bare mudflats and Suaeda salsa dominated landscape decreased by 15.28 and 14.35 km, respectively, while the length of tidal channels in Spartina alterniflora dominated landscape increased by 86.03 km. The network circuit connectivity, node connectivity, and network connectivity were at a low level. The hydrological connectivity in bare mudflats, Suaeda salsa, and Phragmites australis changed little. There were rapid increases of hydrological connectivity in the Spartina alterniflora dominated landscape from 2015 to 2020.


Key words: Yellow River estuary, coastal wetland, tidal channel, landscape type, distribution character.