Revealing the long-term impacts of plant invasion and reclamation on native saltmarsh vegetation in the Yangtze River estuary using multi-source time series remote sensing data DOI Creative Commons
Jinquan Ai, Lijuan Chen, Haiqing He

et al.

Ecological Engineering, Journal Year: 2024, Volume and Issue: 208, P. 107362 - 107362

Published: Aug. 22, 2024

Understanding the long-term dynamics of saltmarsh vegetation and their driving factors is crucial for restoration degraded coastal wetlands. Reclamation plant invasion, identified as two most significant environmental contributors to degradation, profoundly influence evolution vegetation. However, impacts reclamation invasion on native remain unclear. This study utilized multi-source time series remote sensing data quantify Spartina alterniflora in Yangtze River estuary from 1985 2020. Unlike other studies, this generated annual cover using image composite, zoning classification, object-based phenology algorithm, random forest which largely addressed problem that existing studies could not capture transient change gradual because insufficient observation frequency. Results showed that: (1) had resulted a loss 503.93 km2 2020, including 286.16 Phragmites australis community 217.77 Scirpus spp. community; 78.96 12.48 66.48 (2) Significant differences spatial-temporal patterns were observed under different degrees reclamation, irrecoverable scenario severe excessive recoverable moderate degree competitive without reclamation.; (3) From perspective, spread limitation determined by intensity was decisive factor area, while interspecific competition between invasive community. provides theoretical basis baseline protection strategies area.

Language: Английский

Blue carbon storage of tidal flats and salt marshes: A comparative assessment in two Chinese coastal areas DOI
Jinge Zhou, Lulu Zhang, Jingfan Zhang

et al.

Palaeogeography Palaeoclimatology Palaeoecology, Journal Year: 2024, Volume and Issue: unknown, P. 112509 - 112509

Published: Sept. 1, 2024

Language: Английский

Citations

3
Assessing the impacts of reclamation and invasion on ecological dynamics of coastal wetland vegetation in the Yangtze Estuary from 1985 to 2019:A case study of Chongming Island, China DOI Creative Commons
Zhuo Wei, Nan Wu, Runhe Shi

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 376, P. 124505 - 124505

Published: Feb. 15, 2025

The distribution of coastal wetland vegetation is influenced by biological invasions, human reclamations and climate changes, which continually reshape structures. However, limited attention has been given to the impact invasion on native tidal wetlands. This study focuses wetlands Chongming Island, employing a multi-feature dataset combining spectral, phenological, temporal information Google Earth Engine (GEE) platform. Using Random Forest (RF) classification method, we analyzed annual changes examined distinct effects natural anthropogenic factors. research results indicate that: (1) From 1985 2019, total area Island expanded, while decreased due embankment construction island connection projects. (2) dropped its lowest point in 2002 (3812.76 ha), then gradually recovered. (3) Human reclamation was primary driver from 1995. (4) Vegetation Dongtan both factors, whereas Beiliuyao affected expansion S. alterniflor. These findings provide valuable insights into drivers long-term offering essential data theoretical support for sustainable development management Island's ecosystems.

Language: Английский

Citations

0
Spatiotemporal Dynamics and Potential Distribution Prediction of Spartina alterniflora Invasion in Bohai Bay Based on Sentinel Time-Series Data and MaxEnt Modeling DOI Creative Commons
Qi Wang, Guangxu Cui, Haojie Liu

et al.

Remote Sensing, Journal Year: 2025, Volume and Issue: 17(6), P. 975 - 975

Published: March 10, 2025

The northward expansion of Spartina alterniflora (S. alterniflora) poses a profound ecological threat to coastal ecosystems and biodiversity along China’s coastline. This invasive species exhibits strong adaptability colder climates, facilitating its potential spread into northern regions underscoring the urgent need for nuanced understanding spatial distribution invasion risks inform evidence-based ecosystem management strategies. study employed multi-temporal Sentinel-1/2 imagery (2016–2022) map predict S. in Bohai Bay. An object-based random forest classification achieved an overall accuracy above 92% (κ = 0.978). Over six-year period, decreased from 46.60 km2 2016 12.56 2022, reflecting annual reduction approximately 5.67 km2. decline primarily resulted targeted eradication efforts, including physical removal, chemical treatments, biological competition Despite this local reduction, MaxEnt modeling suggests that climate trends habitat suitability continue support expansion, particularly high-risk areas such as Binhai New District, Shandong Yellow River Delta, Laizhou Bay tributary estuary. Key environmental drivers include maximum temperature warmest month, mean wettest quarter, isothermality, sea surface temperature, soil type. High-risk zones, covering about 95.65 These findings illuminate dynamics offer scientific guidance restoration strategies, ensuring protection fostering sustainable development.

Language: Английский

Citations

0
Photosynthetic carbon allocation in native and invasive salt marshes undergoing hydrological change: A mesocosm experiment DOI
Ya‐Lei Li,

Li‐Na Xie,

Shihua Li

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 935, P. 173232 - 173232

Published: May 17, 2024

Language: Английский

Citations

2
Ecological Effects of the Huge Invasive Species Removal Project in Coastal China DOI
Guanpu Qi,

L H Li,

Haiyang Li

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Saltmarsh wetlands are recognized as some of the most ecologically valuable yet vulnerable ecosystems globally. However, since 1970s, saltmarsh in coastal China have been seriously threatened by invasive

Language: Английский

Citations

2
Can We Protect China's Northern Coast Wetlands From Tidal Dynamics by Restoring Native Species After Spartina alterniflora Is Eradicated? A Model‐Based Analysis DOI Open Access
Jiakai Liu,

Jingwen Wang,

Shiqiang Zhao

et al.

Land Degradation and Development, Journal Year: 2024, Volume and Issue: 35(17), P. 5439 - 5451

Published: Oct. 8, 2024

ABSTRACT In recent years, the Chinese government has implemented a series of initiatives with objective eradicating invasive Spartina alterniflora along entire coastline. This given rise to concerns about potential for subsequent coastal erosion and salt marsh shrinkage. study introduces novel contribution in form model‐based analysis, grounded fieldwork from Yellow River Delta, which assesses native Suaeda salsa as an alternative protection. Our approach is distinctive that it not only compares flow velocity reduction effects S. , but also evaluates efficacy three distinct planting patterns managing tidal dynamics. this study, we present significant finding: while both species can mitigate velocity, shows superior performance, represents point discussion field wetland management. Furthermore, our research indicates dense aggregated are particularly effective during storm surges, offering strategic insight future ecological engineering. However, recognize limitations approach, including need continuous management control spread necessity further optimize restoration under varying conditions. findings highlight importance balanced suggesting retention portion emphasizing high‐density configurations enhance resilience.

Language: Английский

Citations

2
Distribution of mudsnail Bullacta caurina along smooth cordgrass Spartina alterniflora invasion stages on a coast of the Yellow Sea, China DOI
Yang Li, Jingyi Shi, Rui Pan

et al.

Marine Environmental Research, Journal Year: 2023, Volume and Issue: 192, P. 106248 - 106248

Published: Oct. 29, 2023

Language: Английский

Citations

4
Is Spartina alterniflora eradication project in Chongming Island a nature-based solution? DOI Creative Commons

Dong-Fan Xu,

Qi Yuan,

Ling-Wen Lu

et al.

Nature-Based Solutions, Journal Year: 2024, Volume and Issue: 6, P. 100178 - 100178

Published: Aug. 30, 2024

Language: Английский

Citations

1
Long-term alien marsh grass in China brings high carbon uptake capacity but cannot sustain high-temperature weather DOI
Qi Yuan,

Haiqiang Guo,

Dong-Fan Xu

et al.

Estuarine Coastal and Shelf Science, Journal Year: 2024, Volume and Issue: 309, P. 108979 - 108979

Published: Oct. 9, 2024

Language: Английский

Citations

1
Impact of Coastal Squeeze Induced by Erosion and Land Reclamation on Salt Marsh Wetlands DOI Creative Commons

Guangzhi Zhang,

Jiali Gu, Hao Hu

et al.

Journal of Marine Science and Engineering, Journal Year: 2024, Volume and Issue: 13(1), P. 17 - 17

Published: Dec. 27, 2024

Salt marshes are declining due to the dual pressures of coastal erosion and land reclamation. However, there remains a lack quantitative analysis regarding this reduction process its driving mechanisms. This study examines dynamics influencing factors salt marsh vegetation along eroding coastline Sheyang County, Jiangsu Province, China, between 1985 2020, using remote sensing analyze changes in artificial coastlines, water boundaries, front edge, topography. Our results showed an extensive seaward movement coastlines reclamation, coupled with severe reductions area width. Coastal further caused 10.5% decline elevation 46.7% increase slope steepness, amplifying vulnerability wave action. Native species were largely replaced by Spartina alterniflora, reducing ecological diversity. Currently, human pressure on landward side has been alleviated; thus, addressing is vital preventing loss marshes. Sediment retention engineering native restoration efforts can gradually facilitate recovery provided critical insights for sustainable management under bidirectional pressures.

Language: Английский

Citations

1