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

Ecological restoration of coastal wetlands in China: Current status and suggestions DOI
Ningning Liu, Zhijun Ma

Biological Conservation, Journal Year: 2024, Volume and Issue: 291, P. 110513 - 110513

Published: Feb. 29, 2024

Language: Английский

Citations

32
Global annual wetland dataset at 30 m with a fine classification system from 2000 to 2022 DOI Creative Commons
Xiao Zhang,

Liangyun Liu,

Tingting Zhao

et al.

Scientific Data, Journal Year: 2024, Volume and Issue: 11(1)

Published: March 23, 2024

Abstract Wetlands play a key role in maintaining ecological balance and climate regulation. However, due to the complex variable spectral characteristics of wetlands, there are no publicly available global 30-meter time-series wetland dynamic datasets at present. In this study, we present novel 30 m annual maps (GWL_FCS30D) using Landsat imagery on Google Earth Engine platform, covering period 2000–2022 containing eight subcategories. Specifically, make full use our prior globally distributed training sample pool, adopt local adaptive classification spatiotemporal consistency checking algorithm generate maps. The GWL_FCS30D were found achieve an overall accuracy Kappa coefficient 86.95 ± 0.44% 0.822, respectively, 2020, show great temporal variability United States European Union. We expect dataset would provide vital support for ecosystems protection sustainable development.

Language: Английский

Citations

17
Impact of Ecological Restoration on Carbon Sink Function in Coastal Wetlands: A Review DOI Open Access

Xiaoqun Guo,

Yanjin Liu, Tian Xie

et al.

Water, Journal Year: 2025, Volume and Issue: 17(4), P. 488 - 488

Published: Feb. 9, 2025

Reducing carbon emissions and increasing sinks have become the core issues of international community. Although coastal blue ecosystems (such as mangroves, seagrass beds, salt marshes large algae) account for less than 0.5% seafloor area, they contain more 50% marine reserves, occupying an important position in global cycle. However, with rapid development economy continuous expansion human activities, wetlands suffered serious damage, their sequestration capacity has been greatly limited. Ecological restoration emerged a key measure to reverse this trend. Through series measures, including restoring hydrological conditions damaged wetlands, cultivating suitable plant species, effectively managing invasive species rebuilding habitats, ecological is committed functions service value. Therefore, paper first reviews research status influencing factors wetland sinks, discusses objectives, types measures various projects, analyzes impact these projects on sink function, proposes suggestions incorporating enhancement into restoration.

Language: Английский

Citations

1
Impact of Spartina alterniflora Invasion in Coastal Wetlands of China: Boon or Bane? DOI Creative Commons
Xiaojun Zheng, Zeeshan Javed, Bing Liu

et al.

Biology, Journal Year: 2023, Volume and Issue: 12(8), P. 1057 - 1057

Published: July 27, 2023

Invasive plants, like Spartina alterniflora (SA), have a competitive advantage over native flora due to their rapid utilization of vital soil nutrients. This results in the depletion resources for plant species, significantly impacting ecosystem diversity and stability. comprehensive review addresses several key aspects related SA’s spread spatial distribution China’s wetlands. The expansion is attributed its high reproductive ability, adaptability environmental factors elevated salinity, ability disperse seeds via tides. mainly were found Zhejiang, Jiangsu, Fujian, Shanghai provinces, accounting more than 90% total area. growth displacement species loss microbial, plant, animal diversity. Some studies reported that increases carbon storage, while others argue it weakens this function. impact on organic inorganic requires further research better understanding dynamics coastal controlled can be beneficial many wetlands’ ecosystem. In China, various methods been employed control invasion SA. Physical control, such as removing plants converting them into fertilizer or bioenergy, has commonly used but limitations air pollution potential re-invasion. Chemical herbicides Imazapyr Haloxyfop-R-methyl effectively prevented re-invasion specific areas, adverse impacts are still uncertain. Wetland Park construction, aquaculture development, substituting exotic with mangroves reed communities also successful. It becomes evident long-standing Contextual approach necessary manage advantages curtail drawbacks associated S. across China.

Language: Английский

Citations

17
Exploring the long-term dynamics of detailed wetland types and their driving forces in coastal metropolitan areas from 1990 to 2020 DOI Creative Commons
Kaifeng Peng, Weiguo Jiang, Peng Hou

et al.

International Journal of Applied Earth Observation and Geoinformation, Journal Year: 2024, Volume and Issue: 132, P. 104012 - 104012

Published: July 13, 2024

The Guangxi Beibu Gulf Economic Zone (GBGEZ) and Guangdong–Hong Kong–Macao Greater Bay Area (GBA) have rich wetlands. However, long-term maps with detailed wetland types in these two regions are scarce, studies on the driving forces of changes insufficient. To this end, our study produced to explore dynamics their forces. From 1990 2020, mangrove, tidal flat, coastal shallow water reservoir had similar change trends metropolitan areas. For GBGEZ between serious degradation, slight obvious restoration areas 569.23 km2, 426.89 274.83 km2 375.78 respectively; for GBA, four 986.80 1854.63 547.34 2183.57 respectively. Overall, degradation GBA were significantly larger than that GBGEZ. Sample-based analysis indicated mainly attributed direct drivers, suffering more from influence drivers. Specifically, over 90 % degradations 89 restorations affected by drivers (e.g. aquaculture). Serious most land reclamation) 2010 indirect 2020 shrinkage). restorations, them factors expansion) while new reservoir). could offer valuable information support protection urban sustainable development.

Language: Английский

Citations

8
Expedited loss of soil biodiversity in blue carbon ecosystems caused by rising sea levels DOI
Gui‐Feng Gao,

Luyao Song,

Yihui Zhang

et al.

Soil Biology and Biochemistry, Journal Year: 2024, Volume and Issue: 191, P. 109348 - 109348

Published: Feb. 2, 2024

Language: Английский

Citations

6
Annual mapping of Spartina alterniflora with deep learning and spectral-phenological features from 2017 to 2021 in the mainland of China DOI
X J Li,

Jinyan Tian,

Xiaojuan Li

et al.

International Journal of Remote Sensing, Journal Year: 2024, Volume and Issue: 45(9), P. 3172 - 3199

Published: April 29, 2024

Language: Английский

Citations

6
Advances in Remote Sensing and Machine Learning Methods for Invasive Plants Study: A Comprehensive Review DOI Creative Commons

Muhammad Murtaza Zaka,

Alim Samat

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(20), P. 3781 - 3781

Published: Oct. 11, 2024

This paper provides a comprehensive review of advancements in the detection; evaluation; and management invasive plant species (IPS) using diverse remote sensing (RS) techniques machine learning (ML) methods. Analyzing high-resolution datasets received from drones, satellites, aerial photography enables perfect cartography technique analysis spread various impacts ecology on IPS. The majority current research hyperspectral imaging with unmanned vehicle (UAV) enhanced by ML has significantly improved accuracy efficiency identifying mapping IPS, it also serves as powerful instrument for ecological management. integrative association is essential to manage alien better, researchers multiple other fields participate modeling innovative methods structures. Incorporating advanced technologies like light detection ranging (LiDAR) shows potential improving spatial spectral approaches utilizing such support vector (SVM), random forest (RF), artificial neural network (ANN), convolutional (CNN), deep (DCNN) detecting complex significant results indicate that methods, most importantly SVM RF, are victorious recognizing via analyzing RS data. report emphasizes importance continuous efforts improve predictive models, fill gaps our understanding connections between climate, urbanization invasion dynamics, expands conservation initiatives techniques. study highlights data refine plans, enabling implementation more efficient strategies controlling IPS preserving ecosystems.

Language: Английский

Citations

4
Macrofaunal biodiversity and trophic structure varied in response to changing environmental properties along the Spartina alterniflora invasion stages DOI

Li Yang,

Rui Pan, Shuang Wang

et al.

Marine Pollution Bulletin, Journal Year: 2025, Volume and Issue: 214, P. 117756 - 117756

Published: Feb. 27, 2025

Language: Английский

Citations

0
Tracking the Dynamics of Spartina alterniflora with WorldView-2/3 and Sentinel-1/2 Imagery in Zhangjiang Estuary, China DOI Open Access
Di Dong,

Huamei Huang,

Qing Gao

et al.

Water, Journal Year: 2024, Volume and Issue: 16(13), P. 1780 - 1780

Published: June 23, 2024

The invasion of Spartina alterniflora (S. alterniflora) has posed serious threats to the sustainability, quality and biodiversity coastal wetlands. To safeguard ecosystems, China enacted large-scale S. removal projects, which set goal effectively controlling throughout by 2025. accurate monitoring with remote sensing is urgent requisite for scientific eradication, control management this invasive plant. In study, we combined multi-temporal WorldView-2/3 (WV-2/3) Sentinel-1/2 imagery monitor dynamics before after projects in Zhangjiang Estuary. We put forward a new method detection eight-band WV-2/3 imagery. proposed first used NDVI discriminate from water, mud flats mangroves based on Ostu thresholding then red-edge, NIR1 NIR2 bands support vector machine (SVM) classifier distinguish algae. Due contamination frequent cloud cover tidal inundation, long revisit time high-resolution satellite sensors short-term Sentinel-1 SAR series Sentinel-2 optical project status 2023. overall accuracies results here are above 90%. Compared traditional SVM method, achieved significantly higher identification accuracy. area was 115.19 hm2 2015, 152.40 2017 15.29 2023, respectively. generated maps clearly show clonal growth Estuary 2015 2017, eradication remarkable rate about 90% study area. With continuous implementation “Special Action Plan Prevention Control (2022–2025)” aims eliminate more than all provinces 2025, continual high-spatial resolution crucial secondary restore

Language: Английский

Citations

3