A quantitative analysis of the impact of reclamation on the stability of coastal wetlands DOI Creative Commons
Yanhui Chen, Linlin Cui, Guosheng Li

et al.

Ocean & Coastal Management, Journal Year: 2023, Volume and Issue: 244, P. 106823 - 106823

Published: Aug. 25, 2023

The ecological stability of coastal areas is seriously affected by tidal flat reclamation. Understanding the spatial characteristics impact reclamation on stability, as well contribution different use types to change, important for mitigating negative effects In this study, multi-source and multi-temporal remote sensing images were combined quantitatively analyze relationship between in regions area Jiangsu Province, relative change. results showed that: Different forms statistical relationships existed reclaimed non-reclaimed area, respectively, while a significant quadratic function whole index decreased first then increased with increase amount, threshold 1243 km2; buffer zones within intensity decay characteristics; type that has greatest aquaculture land, it arable land. addition, land hydraulic engineering have salt industry positive effects.

Language: Английский

Improving spatial and temporal accuracy in coastal reclamation mapping using satellite image time series DOI

Runjie Huang,

Li Zhuo, Jie Na

et al.

International Journal of Applied Earth Observation and Geoinformation, Journal Year: 2025, Volume and Issue: 139, P. 104499 - 104499

Published: March 31, 2025

Citations

0
Influence of Organic Amendments Based on Garden Waste for Microbial Community Growth in Coastal Saline Soil DOI Open Access
Jingnan Li, Haiyang Zhang, Zheng Li

et al.

Sustainability, Journal Year: 2023, Volume and Issue: 15(6), P. 5038 - 5038

Published: March 12, 2023

Garden waste compost (GWC) has been applied as an amendment to improve the desalination efficiency, nutrient availability and diversity of microbial community in coastal saline soil. Understanding response garden application is great significance ecological restoration. Four treatments were established: CK, nonamended control; T1, 68 kg·m−3 compost; T2, 15 bentonite; T3, a mixture bentonite. In addition, soil physicochemical properties, enzymes, biomass carbon measured. The results show that T3 had more significant effect on increasing well nitrogen, urease, sucrase dehydrogenase activities. Based relative abundance, linear discriminant size (LEfSe) analyses, amendments can be seen have increased abundance alpha bacterial structure also altered structure. RDA Pearson correlation analysis at phylum level indicated available total porosity, hydraulic conductivity, bulk density EC primary determinants communities associated with this amendment. conclusion, enables microorganisms participate material cycle, indicating composting beneficial restoration soils.

Language: Английский

Citations

8
Using benthic macroinvertebrates as bioindicators to evaluate the impact of anthropogenic stressors on water quality and sediment properties of a West African lagoon DOI Creative Commons
Taiwo Adekanmi Adesakin,

Ehikhamele Isaac Erhomosele,

Oluwaseun F. Ogunrinola

et al.

Heliyon, Journal Year: 2023, Volume and Issue: 9(9), P. e19508 - e19508

Published: Sept. 1, 2023

This study aimed to investigate the impact of anthropogenic stressors (landfilling, navigation for transport goods, cooling in fossil fuel, urbanization, industrial expansion, agriculture activities, and recreational activities) on environmental variables, microbiological quality, sediment properties using benthic macroinvertebrates as a bioindicator within Lagos Lagoon, Nigeria. Four (4) sampling stations were established with respect their importance/anthropogenic activities Lagoon. Surface water, bottom substrates, macroinvertebrate fauna samples collected bimonthly from each station year analyzed appropriate standard methods procedures. The highest pH range 7.96-8.01 (7.98 ± 2.35) was recorded at Site IV, while lowest 6.41-7.01 (6.15 1.14) observed II, there significant difference (p < 0.05) among mean values across sites. High salinity, chloride, sodium, COD, BOD, manganese, nickel, cadmium, nitrate surface water physicochemical parameters, which above WHO (2011) permissible limits, high concentrations toxic metals (Pb, Cr, Zn, Cd) sediment. A total 26 species during this study, belongs eight (8) classes. Gastropoda percentage contribution 39.12%, followed by polychaeta accounting 30.34%, malacostraca contributed 2.63%. abundance I (256 Indiv/m2), IV (252 least II (195 Indiv/m2). Based results physico-chemical, heavy metals, microbial assemblage obtained revealed adverse effect quality degradation. It plays role distribution diversity an aquatic environment.

Language: Английский

Citations

8
Estimating GDP by Fusing Nighttime Light and Land Cover Data DOI Creative Commons
Nan Xu, Shiyi Zhang, Jiang Shuai

et al.

Canadian Journal of Remote Sensing, Journal Year: 2024, Volume and Issue: 50(1)

Published: July 31, 2024

Accurate information on gross domestic product (GDP) is essential for better understanding the dynamics of regional economies and urbanization processes. Satellite based nighttime light datasets can well track GDP in urban areas, however, they are difficult to be used suburban, rural sparsely populated areas. Thus, this study explored potential GlobeLand30 relief degree improving ability VIIRS Nighttime Light data estimation. Firstly, we calculated Moran's Index (Moran's I) measure spatial auto-correlation GDP. At provincial level, I 0.14, Z value 2.29. While at prefecture city it 0.11 14.54, respectively. Then, compared results derived from geographically weighted regression (GWR) OLS models (i.e., R2, root mean square error, corrected Akaike criteria residuals). Both suggest that land cover significantly improve estimation performance, total (TNL) most important economic indicator estimating The coefficients GWR model TNL levels 1.75 1.19, respectively, which larger than other factors such as terrain undulation. In addition, performed both levels, prefecture-level depict variation detail. provincial-level models, could account 93% development, while only reflect 82%. Likewise, R2 improved almost 50% with model.

Language: Английский

Citations

3
Global mapping of human-transformed dike-pond systems DOI
Yang Xu, Lian Feng, Hongwei Fang

et al.

Remote Sensing of Environment, Journal Year: 2024, Volume and Issue: 313, P. 114354 - 114354

Published: Aug. 15, 2024

Language: Английский

Citations

3
Physicochemical properties and salinization characteristics of soils in coastal land reclamation areas: A case study of China-Singapore Tianjin Eco-City DOI Creative Commons

Haixia Zhao,

Binjie Gu, Dechao Chen

et al.

Heliyon, Journal Year: 2022, Volume and Issue: 8(12), P. e12629 - e12629

Published: Dec. 1, 2022

Land salinization is a global environmental problem, and how to manage saline soils promote healthy ecosystems has become major challenge. China-Singapore Tianjin Eco-City located in coastal land reclamation areas, so severe this region. In study, geostatistical methods, the ordinary kriging method, principal component analysis were used. Vertical sampling was performed over three layers (0-20 cm, 20-40 40-60 cm) at 184 locations within study area produce total of 542 soil samples. It found that areas with soluble salt contents greater than 3000 mg/kg account for 90% area, high content surface layer dominant factor salinization. Na+, Cl-, SO42- are primary control factors determine coefficient variation soils' content. Total salinity SO42-, K+, Mg2+ reflect on soils, while effective phosphorus, available potassium, organic carbon state nutrition. Based our results, we proposed site-specific scientific remediation greening measures.

Language: Английский

Citations

13
Simulation of mangrove suitable habitat in the Guangdong-Hong Kong-Macao Area under the background of climate change DOI

Jiali Zeng,

Bin Ai,

Zhuokai Jian

et al.

Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 351, P. 119678 - 119678

Published: Dec. 2, 2023

Language: Английский

Citations

7
Spatio-temporal changes and driving forces of reclamation based on remote sensing: A case study of the Guangxi Beibu Gulf DOI Creative Commons

Jingfang Lu,

Yibo Zhang,

Honghua Shi

et al.

Frontiers in Marine Science, Journal Year: 2023, Volume and Issue: 10

Published: Feb. 10, 2023

Since 2000, coastal reclamation projects have been implemented in the Guangxi Beibu Gulf to alleviate shortage of land resources. As a result, area has increased significantly. In this study, based on Landsat program, we tracked waters 21st century. An indicator system was proposed assess driving forces synthetically. Our results showed that 98.6 km 2 reclaimed from 1997 2017, which three regions underwent great changes: Fangcheng Bay, Tieshan and Qiznhou Bay. Furthermore, spatio-temporal changes were affected by combination population growth, economic development, marine industry development cities. These provide an important historical reference for tracking human processes Gulf, also offer some suggestions rational allocation

Language: Английский

Citations

7
Inferring coastal slope of sandy beaches from remote sensing imagery and tidal level data DOI Creative Commons
Nan Xu, Chenglin Zhou, Shiyi Zhang

et al.

Geocarto International, Journal Year: 2024, Volume and Issue: 39(1)

Published: Jan. 1, 2024

Language: Английский

Citations

2
Land Subsidence Monitoring and Dynamic Prediction of Reclaimed Islands with Multi-Temporal InSAR Techniques in Xiamen and Zhangzhou Cities, China DOI Creative Commons
Guang-Rong Li, Chaoying Zhao, Baohang Wang

et al.

Remote Sensing, Journal Year: 2022, Volume and Issue: 14(12), P. 2930 - 2930

Published: June 19, 2022

Artificial islands and land reclamation are one of the most important ways to expand urban space in coastal cities. Long-term consolidation reclaimed material compaction marine sediments can cause ground subsidence, which may threaten buildings infrastructure on lands. Therefore, it is crucial monitor subsidence predict future deformation trend mitigate damage take measures for any infrastructure. In this paper, a total 125 SAR images acquired by C-band Sentinel-1A satellite between June 2017 September 2021 collected. The small baseline subsets (SBAS) interferometry (InSAR) method first conducted detect Xiamen Zhangzhou cities Fujian Province, China, distributed scatterers (DS)-InSAR used recover complete history some typical areas including Airport Dadeng Island Shuangyu Island. Then, sequential estimation geotechnical model jointly applied demonstrate current evolution constructed roads results show that maximum cumulative reaches 425 mm Xiang’an 626 Island, predicted be as large 1.1 m 2026 This research will provide guidelines design construction prevent control subsidence.

Language: Английский

Citations

11