Temporal and spatial changes in coastline movement of the Yangtze delta during 1974–2010

Chu, Zhongxin; Yang, Xiguang; Feng, Xiuli; Fan, Di; Li, Yingkun; Shen, Xing; Miao, Anyang

doi:10.1016/j.jseaes.2013.01.002

Cited by 60 publications

(24 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To help guide coastal management and policy-and-decision making, baseline scientific information on rates and trends of regional coastal changes is urgently needed [2]. Studies on estimates of coastline changes and monitoring coastal environment based on remotely sensed data have been widely carried out in various deltas [3][4][5], wetlands [6][7][8][9], bays [10,11], and estuaries [12,13] as well as other continental coasts [14].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Coastline Changes under Human Intervention Using Multi-Temporal High-Resolution Images: A Case Study of the Zhoushan Islands, China

et al. 2014

View full text Add to dashboard Cite

Abstract:Continued sea-level rise and coastal development have led to considerable concerns on coastline changes along inhabited islands. Analysis of long-term coastline changes of islands is however limited due to unavailable data and the cost of field work. In this study, high-resolution images taken from 1970-2011 at an interval of about 10 years and topographic maps were collected to determine coastline changes and their drivers in the Zhoushan Islands, China. Results show that nearly all inhabited islands appeared to have noteworthy seaward expansion during the past four decades. Coastline change rates varied among islands, and the annual change rate of Zhoushan Island (the main island) reached 12.83 ± 0.17 m/year during the same period. Since 2003, the study area has been dominated by artificial coast. The proportion of harbor/port and urban/industrial coast has significantly increased, while rocky coasts and shelter-farm coasts have shrunk greatly. Preliminary analysis of drivers for these coastline changes across the Zhoushan Islands highlights the roles of human policies during different periods as well as location, which OPEN ACCESSRemote Sens. 2014, 6 9931 were the dominant factors controlling the great spatial and temporal complexity of coastline changes of the major islands. Sediment supply from the Yangtze River decreased after the completion of the Three Gorges Dam in 2003; however, the Zhoushan coast rapidly accreted seaward during the last decade and the artificial siltation, coastal engineering, and harbor dredging materials could be responsible for the observed coastline changes. Pressured by rapid development of the port industry, the Zhoushan coast may face unprecedented challenges in coastal use in the near future. This research provides the basic background information for future studies on coastal protection and management.

show abstract

Section: Introductionmentioning

confidence: 99%

Evaluation of Coastline Changes under Human Intervention Using Multi-Temporal High-Resolution Images: A Case Study of the Zhoushan Islands, China

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Shoreline progradation, caused by sea reclamations, was also noted in the previous studies. 22 The percentage of artificial coastline along the Bohai Sea was 74.16% in 2012. Significant changes caused by extensive harbor construction and the growth of polder systems also occurred north and west of Bohai Bay and south of Laizhou Bay.…”

Section: Human Factorsmentioning

confidence: 99%

“…10 However, satellite imagery is especially useful for studying areas that contain rapidly changing landforms. 21 Studies that incorporate remote sensing for detecting coastline changes in China have been performed for the Yangtze Delta, 22 Fujian coast, 23 and Pearl River Delta. [11][12][13][14][15] The repetitive acquisition and synoptic capabilities of remote sensing systems can be utilized to provide timely and comprehensive spatial data for coastal geographic information systems (GIS).…”

Section: Introductionmentioning

confidence: 99%

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

Zhu

et al. 2014

J. Appl. Remote Sens

View full text Add to dashboard Cite

Using multitemporal remote sensing data from 1987 to 2012, this study extracted the coastlines along the Bohai Sea and explored the relationship between coastline change and human activity. Our results indicate that the general pattern of coastline change can be divided into two stages: a slow-change stage (1987 to 2002) and a rapid-change stage (2002 to 2012). The total area of the Bohai Sea decreased by 1593.44 km 2 from 1987 to 2012, at an average rate of 63.7km 2 ∕year. The total length of coastline along the Bohai Sea increased by 633.7 km at an average rate of 25.3 km∕year. The length of natural coastline decreased by 836.2 km at an average rate of 33.4 km∕year. The length of artificial coastline increased by 1469.9 km, at an average rate of 58.8 km∕year. The artificial coastline composed 27.07% and 74.16% of the total coastline lengths in 1987 and 2012, respectively. The natural coastline was the main coastline type in 1987. However, the natural coastline composed only 25.84% of the total coastline in 2012. The maximum progradation in the Bohai Bay occurred in Caofeidian, where the coastline advanced seaward by ∼19630.33 m, at an average rate of 785.23 m∕year. The maximum erosion occurred at the head of the abandoned Diaokou promontories, where the coastline retreated landward by ∼4758.01 m, at an average rate of 190.33 m∕year. Possible explanations for the coastline changes along the Bohai Sea include natural factors (e.g., riverine sediment supply and hydrodynamic conditions) and human impacts (e.g., reclamation projects), which can be primarily attributed to anthropogenic activities, coastline type, and rapid changes in the Bohai Sea since 2002. The majority of the coastline changes were caused by land reclamation and the construction of embankments. The effects of tides and waves were relatively minimal.

show abstract

“…The changes of flow and sediment conditions will inevitably lead to erosion and deposition of riverbed, while erosion and deposition will certainly require corresponding adjustment of the cross section, longitudinal gradient and river pattern of riverbed to adapt to the changed flow and sediment conditions and achieve dynamic balance (Wang et al, 2013). Since changes are long-playing and long-distance (Brandt, 2000;Chu et al, 2013;Yang et al, 2014), new challenges are imposed on channel improvement of Jingjiang Reach. Based on hydrology and sediment data before and after the impoundment of the Three Gorges Reservoir and the actually measured topographical data of Jingjiang Reach, this study analyzes the response of erosion and deposition of Jingjiang riverbed to flow changes and sediment change, discussion the riverbed erosion and deposition trend.…”

Section: Introductionmentioning

confidence: 99%

Research on Riverbed Adjustment Response of Jingjiang Reach Under the Change of Flow and Sediment

Xq¹

2017

Appl Ecol Env Res

View full text Add to dashboard Cite

Abstract. According to the hydrological and sediment data before and after the impoundment in the Three Gorges Reservoir and the measured topographic data of Jingjiang Reach, the article analyzes the response mechanism of erosion and deposition of riverbed in Jingjiang Reach for flow changes, suspended sediment recovery and bed material compensation, makes a judgment of the terrain adjustment trend of the reach in the future. The main conclusions are as follows: After the impoundment of Three Georges Reservoir, the low flow has increasing and streamwise recovery of suspended load strengthen the scouring ability of the overall Jingjiang Reach. After the impoundment of Three Georges Reservoir, the Jingjiang Reach shows conforming and cumulative erosion; the low flow channel is the principal part of riverbed scouring.

show abstract

Temporal and spatial changes in coastline movement of the Yangtze delta during 1974–2010

Cited by 60 publications

References 45 publications

Evaluation of Coastline Changes under Human Intervention Using Multi-Temporal High-Resolution Images: A Case Study of the Zhoushan Islands, China

Evaluation of Coastline Changes under Human Intervention Using Multi-Temporal High-Resolution Images: A Case Study of the Zhoushan Islands, China

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

Research on Riverbed Adjustment Response of Jingjiang Reach Under the Change of Flow and Sediment

Contact Info

Product

Resources

About