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与盐度相关的水文连接性介导湿地植被模式和河口生产力

Bo Pang¹, Chunguang Che², Changzhi Yang²

¹School of Environment, State Key Laboratory of Wetland Conservation and Restoration, Beijing Normal University, Beijing, 100875, China; Advanced Institute of Natural Science, Beijing Normal University at Zhuhai, Guangdong, 519087, China; Yellow River Estuary Wetland Ecosystem Observation and Research Station, Ministry of Education, Shandong, 257500, China.

Journal of environmental management

|November 4, 2025

概括

水-盐连接的动态显著影响河口植被. 一个新的水盐连接指数 (WSIC) 模型显示,黄河三角洲的连接性正在下降,导致植被变化和入侵物种的扩张.

科学领域:

河口生态学河口生态学
沿海湿地科学沿海湿地科学
环境建模环境建模

背景情况:

水文连接和盐度 (水盐连接) 对河口生态系统至关重要.
了解这些动态对于保护和恢复沿海湿地至关重要.

研究的目的:

开发和验证一个水盐连接指数 (WSIC) 模型.
为了研究潮间植被对黄河三角洲水盐连接动态的反应.

主要方法:

建立了一个新的水盐连接指数 (WSIC) 模型.
分析了长期数据 (自1987年以来) 关于水盐连接和潮间植被模式.
与土壤盐度和植被特征 (分布,密度,生物质) 相关联的WSIC.

主要成果:

WSIC模型准确地描述了潮间盐的运输和异质性,与土壤盐度有显著的相关性 (P=0.001).
黄河三角洲的上潮WSIC (WSIC_R) 自1987年以来下降了42%,这表明区域海水淡化.
较高的WSIC与植被简化和密度降低相关 (P<0.05),而较低的WSIC_R则促进了Spartina alterniflora入侵 (P<0.001).

结论:

通过WSIC建模的动态水盐连接,深刻影响河口植被结构和分布.
淡化趋势和改变的连接性影响了像Suaeda salsa这样的特有物种,并促进了像Spartina alterniflora这样的入侵物种.
WSIC模型为有效的湿地管理,保护和入侵物种控制提供了一个动态的框架.

关键词:

这是生物入侵.水的相互作用沿海湿地沿海湿地模拟IC模型的IC模型植物分布植物分布水 - 盐连接的连接.

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