A simple waterline approach for tidelands using multi-temporal satellite images: A case study in the Yangtze Delta

Zhao, Bin; Guo, Haiqiang; Yan, Yaner; Wang, Qing; Li, Bo

doi:10.1016/j.ecss.2007.09.022

Cited by 122 publications

(66 citation statements)

References 25 publications

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“…Parameter of damage in this research is coastline shell and TSS concentration of coastal waters of Bengkalis Island. These parameters were obtained by remote sensing method-as favorite and efficient method (Siahaya et al, 2015;Zhao et al, 2008;Guariglia et al, 2006;Sesli et al, 2009) -using Landsat data. We also serve direct measurement of the parameters for verifying and comparing with satellite imagery.…”

Section: Introductionmentioning

confidence: 99%

Coastline changes in North Bengkalis Island, Indonesia: satellite imagery analysis and observation

Mubarak

2018

J.Degrade.Min.Land Manage.

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:Coastal area activity on human exploitation greatly affected aquatic ecosystems. Land changes disturbed the level of soil stability, soil will be easily eroded by the flow of water, the surface tide ran off to the sea. North waters of the island of Bengkalis is a place boiling down to several rivers, including the river Jangkang and river Liung. The rivers have affected the concentration of total suspended solid (TSS) in the strait waters of North Bengkalis Island. This research demonstrated water sampling by using sampling point determined by purposive sampling method mixing the layer of water depth ratio. The results based on satellite imagery data showed that TSS was quite high in the West season period until the transition period I (West to East) with a large concentration value of 200 mg / L. For the lowest TSS concentration occurred in the East season i.e., between 0 -200 mg/L. TSS concentrations that dominated in the East season ranged from 51 to 75 mg/L This value was higher than the TSS concentration of field data analysis, i.e., between 23 -39 mg/L. Changes of coastal coastline of North Bengkalis during the last 20 years continue to change the size of the land area, with a land area of 131 ha lost.

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Section: Introductionmentioning

confidence: 99%

Coastline changes in North Bengkalis Island, Indonesia: satellite imagery analysis and observation

Mubarak

2018

J.Degrade.Min.Land Manage.

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“…The reasons for such high levels of accuracy include the following: 1) only two mapping classifications exist in the accuracy assessment [28]; 2) the high resolution of the available imagery allowed for the estimation of many waterlines at fine spatial scales; 3) all of the waterlines that were extracted automatically were manually corrected to ensure accuracy [15], [22]; and 4) HJ-1A/B images were used for validation [11]. Misclassified sample points were mainly located in the landward region of tidal flats.…”

Section: Resultsmentioning

confidence: 99%

“…Current studies for mapping tidal flats, both when analyzing waterlines related to the low (high) tide time [8], [11]- [13] and when choosing the outmost boundary of multitemporal waterlines [10], [15]- [17], do not identify the supratidal zone, the intertidal zone and the subtidal zone, as was successfully done here. We used DSAS software and Jenks Natural Breaks to achieve zoning of tidal flats, which is meaningful for government planners, ecologists and geographers.…”

Section: Discussionmentioning

confidence: 99%

“…Currently, many methods have been developed to delineate the waterline, including manual digitization [14], [15], edge detection [21], and threshold segmentation [22], [23]. Manual digitization is a straightforward and effective procedure that can assure reliability and accuracy [14], but it is very time consuming.…”

Section: Waterline Extractionmentioning

confidence: 99%

“…Although the second method uses multitemporal remote-sensing images, they have limited precision due to the resolution of the available data. For example, high-spatial resolution imagery, such as SPOT [14] and the Landsat Archive (MSS, TM, ETM+, or Landsat8) [15], [16], have a low temporal resolution, while images with a higher temporal resolution, such as those derived from the MODIS, have a coarse spatial resolution (250 m) [16]. More importantly, these methods can only extract the extent of tidal flats but cannot determine the three functionally different zones within tidal flats.…”

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confidence: 99%

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An Improved Method for Mapping Tidal Flats Based on Remote Sensing Waterlines: A Case Study in the Bohai Rim, China

Gao

Ning

et al. 2016

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Abstract-Tidal flats form boundaries between marine and terrestrial environments, and reported rapid decreases in their extent require improved measures of their status. Current methods for delineating tidal flats have low accuracy because of the limited precision of available imagery, and they cannot identify zones within tidal flats. Three zones within tidal flats are ecologically distinct due to their varied inundation. These include the supratidal, intertidal, and subtidal zones. In this study, we present a more precise method for mapping tidal flats. We used Chinese HJ-1A/B satellite images with a semiautomatic extraction method to generate a sufficient number of waterline estimates taken at various tide heights to delineate the full extent of tidal flats. Then, the full set of waterline estimates is analyzed with the Digital Shoreline Analysis System (DSAS) using Jenks Natural Breaks to identify three zones within tidal flats. We demonstrated the utility of this approach by mapping tidal flats of the Bohai Rim, China. In 2014, the estimate of available tidal flats in the region was 3093 km 2 , among which the area of supratidal, intertidal, and subtidal zones accounted for 5.0%, 84.3%, and 10.7%, respectively. A confusion matrix for accuracy assessment revealed a 93.8% overall accuracy for the resulting tidal flat map. Our method enables tidal flats to be mapped and monitored precisely and comprehensively, providing baseline data on the extent of this disappearing ecosystem that can be used to inform coastal planning and sustainable development.

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Retraction of invasiveSpartina alternifloraand its effect on the habitat loss of endangered migratory bird species and their decline in YNNR using remote sensing technology

Okoye

Gong

2020

Ecology and Evolution

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Wetlands are the primary role player in the sustenance of our fragile and delicate ecosystems, marine habitats, estuaries, and ground and surface water resources. However, wetlands are quite sensitive to loss, degradation, and erosion, depending on the activities and exploitation done on it. Wetland types include marshes, peat, fen, and water bodies like swamp, saltwater, freshwater, and brackish water. Varieties of plants and animal species live, breed, and forage in the wetlands. Spartina alterniflora is simply an invasive perennial rhizomatous deep-rooted salt marsh grass, which plays an essential role in ecological function in its native ecosystems (Xiao et al., 2010). Spartina alterniflora is native to the eastern coast of North America. Invasive plants are plants that are deliberately or inadvertently introduced into any habitat where they have not evolved. Invasive species can spread into various habitat and beyond their native range (Zheng et al., 2016). They are believed to cause havoc to the environment and human welfare after being introduced (Ehrenfeld, 2010).

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A simple waterline approach for tidelands using multi-temporal satellite images: A case study in the Yangtze Delta

Cited by 122 publications

References 25 publications

Coastline changes in North Bengkalis Island, Indonesia: satellite imagery analysis and observation

Coastline changes in North Bengkalis Island, Indonesia: satellite imagery analysis and observation

An Improved Method for Mapping Tidal Flats Based on Remote Sensing Waterlines: A Case Study in the Bohai Rim, China

Retraction of invasiveSpartina alternifloraand its effect on the habitat loss of endangered migratory bird species and their decline in YNNR using remote sensing technology

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