Temporal and Spatial Changes in the Material Exchange Function of Coastal Intertidal Wetland—A Case Study of Yancheng Intertidal Wetland

As a transition zone between the terrestrial ecosystem and the marine ecosystem, coastal intertidal wetland provides an important place for material circulation and energy exchange, and it is nature’s most precious resource. The ecological health of intertidal wetlands is an important prerequisite f...

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Bibliographic Details
Published in:International journal of environmental research and public health 2022-08, Vol.19 (15), p.9419
Main Authors: Dai, Lingjun, Liu, Hongyu, Li, Yufeng
Format: Article
Language:English
Subjects:
Aquatic ecosystems
Aquatic plants
Beaches
Biodiversity
Carbon
Case studies
Coastal zone
Coasts
Ecosystems
Elevation
Evolution
Green development
Information technology
Intertidal zone
Introduced species
Invasive species
Marine ecosystems
Material balance
Nitrogen
Nonnative species
Remote sensing
Spartina alterniflora
Sustainable development
Topography
Transition zone
Vegetation
Wetlands
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Summary:As a transition zone between the terrestrial ecosystem and the marine ecosystem, coastal intertidal wetland provides an important place for material circulation and energy exchange, and it is nature’s most precious resource. The ecological health of intertidal wetlands is an important prerequisite for sustainable green development. The material exchange function objectively and accurately reflects the material balance and ecological health of intertidal wetlands in the coastal zone. This paper uses remote sensing, geographic information technology, and model methods to objectively and accurately assess the temporal and spatial changes in the material exchange function of intertidal wetlands, providing a feasible method for studying the material exchange function of coastal wetlands. The material exchange capacity of wetlands in intertidal zones is affected by many factors, such as vegetation, topography, and base soil. After the invasion of the alien species Spartina alterniflora Lois., the elevation of the Suaeda salsa beach increased by 0.3 m. The elevation of the Phragmites australis beach rose by 0.14 m. The average elevation of S. alterniflora increased by 1.24 m. The material exchange capacity of the intertidal zone decreased by 25%. The functioning of the material exchange between sea and land changed significantly, and the area with a high level of material exchange function capacity was reduced by 71%.
ISSN:1660-4601
1661-7827
1660-4601
DOI:10.3390/ijerph19159419