Coastline movement and change along the Bohai Sea from 1987 to 2012

Zhu, Longhai; Wu, Jianglai; Xu, Zuyan; Xu, Yun; Lin, Jingyu; Hu, Rijun

doi:10.1117/1.jrs.8.083585

Cited by 19 publications

(13 citation statements)

References 31 publications

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“…The decreased sediment load and the coarser sediment size may reduce the SSC in the Bohai Sea. Third, the Bohai Sea experienced massive reclamation, with the reclamation area extended to 1593 km 2 from 1987 to 2012, which weakened the tidal and wave energy and consequently led to decreased SSC in the Bohai Sea (Zhu et al, ).…”

Section: Resultsmentioning

confidence: 97%

Quantitative Assessment on Multiple Timescale Features and Dynamics of Sea Surface Suspended Sediment Concentration Using Remote Sensing Data

et al. 2017

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Wind‐waves, tidal currents, and some other dynamic factors dominate the suspended sediment concentration (SSC) variations in shallow seas and it is difficult to quantitatively evaluate the effects of individual dynamic factors on SSC modulation. This work used the long‐term Moderate Resolution Imaging Spectroradiometer (MODIS) and the high temporal‐resolution Geostationary Ocean Color Imager (GOCI) remote sensing data to quantify the sea surface SSC variations on multiple timescales (intratidal, spring‐neap, seasonal, and long‐term timescales) in the Bohai Sea, and further quantitatively evaluated the effects of corresponding dynamic factors on the SSC modulation. The results indicated that the monsoon associated wind‐waves and stratification played the most important role in modulating SSC, with seasonal SSC variation of 8.1 mg/L in the Bohai Sea. The intratidal current variations played the secondary important role, causing SSC variation of 5.8 mg/L. The spring‐neap tidal current variations led to SSC variation of 3.1 mg/L in the Bohai Sea. In the long run (2003–2014), the SSC of the Bohai Sea decreased slightly with SSC variation of 2.8 mg/L (decline rate: 0.23 mg/L/year), which may be caused by the weakening wind, decreasing sediment load from the Yellow River or the massive reclamation in recent decades. Probably due to the topography, sea bed sediment grain size and river plume, SSC variations in the southern Bohai Sea were more pronounced than those in the northern Bohai Sea.

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Section: Resultsmentioning

confidence: 97%

Quantitative Assessment on Multiple Timescale Features and Dynamics of Sea Surface Suspended Sediment Concentration Using Remote Sensing Data

et al. 2017

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“…However, it rapidly increased to 96.96 km 2 /a after 2004 (Zhu et al, 2016). During 2002-2012, the coastline increased by 311 km, and the sea area decreased by 586.8 km 2 (Zhu et al, 2014). An increase of~0.05 m in M2 tidal amplitude was obtained by both numerical models (Pelling et al, 2013) and the observation data of the Tianjin tidal gauge (Liu et al, 2017).…”

Section: Introductionmentioning

confidence: 98%

Temporal and spatial variations and impact factors of nutrients in Bohai Bay, China

Liu

Wang

et al. 2019

Marine Pollution Bulletin

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“…Qinhuangdao is a famous port city, an important energy export port, and coastal tourist spot on the northwest coast of the Bohai Sea in North China with an area of approximately 7812 km 2 and a population of 2.9 × 10 6 ( Gu et al, 2016 ). The Bohai Sea coastline experiences the strong influence of riverine systems, aquaculture, municipal sewage, industrial wastewaters, and agricultural runoffs ( Zhu et al, 2014 ). Land-use surrounding the Qinhuangdao coastal area shifted drastically from agriculture to industrialization in the last 30 years ( Xu et al, 2010 ).…”

Section: Introductionmentioning

confidence: 99%

“…Land-use surrounding the Qinhuangdao coastal area shifted drastically from agriculture to industrialization in the last 30 years ( Xu et al, 2010 ). The area has undergone development of several petrochemical, steel, and other projects, besides land reclamation and construction of embankments ( Zhu et al, 2014 ). The resulting land-use change has overall influenced the coastal seawater nutrients cycling and associated bacterioplankton, phytoplankton, and other biotic factors ( Xu et al, 2010 ; Liu et al, 2011 ).…”

Section: Introductionmentioning

confidence: 99%

Distinct Seasonal Patterns of Bacterioplankton Abundance and Dominance of Phyla α-Proteobacteria and Cyanobacteria in Qinhuangdao Coastal Waters Off the Bohai Sea

Sen

Zhou

et al. 2017

Front. Microbiol.

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Qinhuangdao coastal waters in northern China are heavily impacted by anthropogenic and natural activities, and we anticipate a direct influence of the impact on the bacterioplankton abundance and diversity inhabiting the adjacent coastal areas. To ascertain the anthropogenic influences, we first evaluated the seasonal abundance patterns and diversity of bacterioplankton in the coastal areas with varied levels of natural and anthropogenic activities and then analyzed the environmental factors which influenced the abundance patterns. Results indicated distinct patterns in bacterioplankton abundance across the warm and cold seasons in all stations. Total bacterial abundance in the stations ranged from 8.67 × 10 4 to 2.08 × 10 6 cells/mL and had significant (p < 0.01) positive correlation with total phosphorus (TP), which indicated TP as the key monitoring parameter for anthropogenic impact on nutrients cycling. Proteobacteria and Cyanobacteria were the most abundant phyla in the Qinhuangdao coastal waters. Redundancy analysis revealed significant (p < 0.01) influence of temperature, dissolved oxygen and chlorophyll a on the spatiotemporal abundance pattern of α-Proteobacteria and Cyanobacteria groups. Among the 19 identified bacterioplankton subgroups, α-Proteobacteria (phylum Proteobacteria) was the dominant one followed by Family II (phylum Cyanobacteria), representing 19.1-55.2% and 2.3-54.2% of total sequences, respectively. An inverse relationship (r = −0.82) was observed between the two dominant subgroups, α-Proteobacteria and Family II. A wide range of inverse Simpson index (10.2 to 105) revealed spatial heterogeneity of bacterioplankton diversity likely resulting from the varied anthropogenic and natural influences. Overall, our results suggested that seasonal variations impose substantial influence on shaping bacterioplankton abundance patterns. In addition, the predominance of only a few cosmopolitan species in the Qinhuangdao coastal wasters was probably an indication of their competitive advantage over other bacterioplankton groups in the degradation of anthropogenic inputs. The results provided an evidence of Bacterioplankton Abundance and Diversity Patterns their ecological significance in coastal waters impacted by seasonal inputs of the natural and anthropogenic matter. In conclusion, the findings anticipate future development of effective indicators of coastal health monitoring and subsequent management strategies to control the anthropogenic inputs in the Qinhuangdao coastal waters.

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Coastline movement and change along the Bohai Sea from 1987 to 2012

Cited by 19 publications

References 31 publications

Quantitative Assessment on Multiple Timescale Features and Dynamics of Sea Surface Suspended Sediment Concentration Using Remote Sensing Data

Quantitative Assessment on Multiple Timescale Features and Dynamics of Sea Surface Suspended Sediment Concentration Using Remote Sensing Data

Temporal and spatial variations and impact factors of nutrients in Bohai Bay, China

Distinct Seasonal Patterns of Bacterioplankton Abundance and Dominance of Phyla α-Proteobacteria and Cyanobacteria in Qinhuangdao Coastal Waters Off the Bohai Sea

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