Continuous Expansions of Yangtze River Islands After the Three Gorges Dam Tracked by Landsat Data Based on Google Earth Engine

doi:10.1109/ACCESS.2020.2994628

	Continuous Expansions of Yangtze River Islands After the Three Gorges Dam Tracked by Landsat Data Based on Google Earth Engine
	Sun, Jinyan 2; Xu, Nan 3; Ding, Lei 4; Ma, Yue 1; Liu, Zhengjia 5; Huang, Zuoji 2
刊名	IEEE ACCESS
	2020
卷号	8 页码:92731-92742
关键词	Rivers Earth Remote sensing Artificial satellites Water resources Hydroelectric power generation Monitoring Google Earth engine river islands remote sensing the Yangtze river the three Gorges dam
ISSN号	2169-3536
DOI	10.1109/ACCESS.2020.2994628
通讯作者	Xu, Nan(hhuxunan@gmail.com)
英文摘要	Understanding the change of river islands is essential for water conservancy construction, channel navigation safety, and industrial/agricultural production. Yangtze River is the largest river in China; however, there are few long-term monitoring results on the changes of Yangtze River islands. To fill this gap, Landsat data available on the Google Earth Engine (GEE) were used to obtain the annual changes of the Yangtze River islands located from the lower reaches of the Three Gorges Dam (TGD) to the Yangtze River delta during 1986-2017. Moreover, we focused on the changes of those islands before and after the construction of the TGD. Annual areas of all river islands were calculated and spatial-temporal pattern of Yangtze River islands were analyzed. Our satellite observation results show continuous expansions of Yangtze River islands after the construction of the TGD in 2003. For the total 138 river islands, in three stages: before 2003, after 2003 and in the 32-year study period, 68, 118, and 124 river islands showed increasing trends, with the net increase of 286.47 km(2), 417.49 km(2), and 665.62 km(2). For the total 92 river island groups (138 islands), percentages of river island expansion are 41.30 & x0025; (before 2003), 80.43 & x0025; (after 2003) and 88.04 & x0025; (1986-2017). Moreover, we found 10 newly developed river islands, with a net expansion of 87.42 km(2) and an expansion rate of 2.73 km(2)/year. The significant decrease (2-4 m) in water level before and after the TGD might be the main factor that results in the observed expansion of Yangtze islands downstream the TGD. We also highlighted the importance of using all available Landsat imagery for tracking the changes of river islands. Our satellite-derived dataset provide reference data for the land use planning and environmental protection in the Yangtze River drainage basin.
资助项目	Anhui Key Laboratory of Water Conservancy and Water Resources[KY201703] ; National Natural Science Foundation of China[41801261] ; National Science and Technology Major Project[11-Y20A12-9001-17/18] ; National Science and Technology Major Project[42-Y20A11-9001-17/18] ; Postdoctoral Science Foundation of China[2016M600612] ; Postdoctoral Science Foundation of China[20170034]
WOS关键词	CHINA ; CHANGJIANG ; COASTLINE ; IMPACTS ; EXTENT ; COVER
WOS研究方向	Computer Science ; Engineering ; Telecommunications
语种	英语
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS记录号	WOS:000539041600040
资助机构	Anhui Key Laboratory of Water Conservancy and Water Resources ; National Natural Science Foundation of China ; National Science and Technology Major Project ; Postdoctoral Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162220]
专题	中国科学院地理科学与资源研究所
通讯作者	Xu, Nan
作者单位	1.Wuhan Univ, Sch Elect Informat, Wuhan 430072, Peoples R China 2.Anhui & Huaihe River Inst Hydraul Res, Anhui Key Lab Water Conservancy & Water Resources, Hefei 230088, Peoples R China 3.Nanjing Normal Univ, Coll Marine Sci & Engn, Nanjing 210023, Peoples R China 4.Nanjing Hydraul Res Inst, Minist Transport, Key Lab Port Waterway & Sedimentat Engn, Nanjing 210029, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Sun, Jinyan,Xu, Nan,Ding, Lei,et al. Continuous Expansions of Yangtze River Islands After the Three Gorges Dam Tracked by Landsat Data Based on Google Earth Engine[J]. IEEE ACCESS,2020,8:92731-92742.
APA	Sun, Jinyan,Xu, Nan,Ding, Lei,Ma, Yue,Liu, Zhengjia,&Huang, Zuoji.(2020).Continuous Expansions of Yangtze River Islands After the Three Gorges Dam Tracked by Landsat Data Based on Google Earth Engine.IEEE ACCESS,8,92731-92742.
MLA	Sun, Jinyan,et al."Continuous Expansions of Yangtze River Islands After the Three Gorges Dam Tracked by Landsat Data Based on Google Earth Engine".IEEE ACCESS 8(2020):92731-92742.