Estimating surface water area changes using time-series Landsat data in the Qingjiang River Basin, China

被引:106
作者
Du, Zhiqiang [1 ]
Bin Linghu [2 ]
Ling, Feng [3 ]
Li, Wenbo [2 ]
Tian, Weidong [4 ]
Wang, Hailei [2 ]
Gui, Yuanmiao [2 ]
Sun, Bingyu [2 ]
Zhang, Xiaoming [2 ]
机构
[1] Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Peoples R China
[2] Chinese Acad Sci, Inst Intelligent Machines, Hefei 230031, Peoples R China
[3] Chinese Acad Sci, Inst Geodesy & Geophys, Wuhan 430077, Peoples R China
[4] Hefei Univ Technol, Sch Comp & Informat, Hefei 230009, Peoples R China
来源
JOURNAL OF APPLIED REMOTE SENSING | 2012年 / 6卷
基金
中国国家自然科学基金;
关键词
remote sensing; surface water; Qingjiang River Basin; dynamic change; Landsat; RESOURCES MANAGEMENT; INDEX NDWI; LAKE; SYSTEM;
D O I
10.1117/1.JRS.6.063609
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The Qingjiang River Basin, which is 423 km long in the Hubei province, China, is the first large tributary of the Yangtze River below the Three Gorges. The Qingjiang River Basin surface water area monitoring plays an important role in the water resource management strategy and regular monitoring management of the Yangtze River watershed. Hydropower cascade exploitation, which started in 1987, has formed three reservoirs including the Geheyan reservoir, the Gaobazhou reservoir, and the Shuibuya reservoir in the midstream and downstream of the Qingjiang River Basin. They have made a great impact on surface water area changes of the Qingjiang River Basin and need to be taken into account. We monitor the Qingjiang River Basin surface water area changes from 1973 to 2010. Ten scenes from the Multispectral Scanner System (MSS), seven scenes from the Thematic Mapper (TM), and two scenes from the Enhanced Thematic Mapper Plus (ETM |) remote sensing data of Landsat satellites, the normalized different water index (NDWI), the modified NDWI (MNDWI), and Otsu image segmentation method were employed to quantitatively estimate the Qingjiang River Basin surface water area in the 1970s, 1980s, 1990s, and 2000s, respectively. The results indicate that the surface water area of the Qingjiang River Basin shows a growing trend with the hydropower cascade development from the 1980s to the first decade of the 21st century. The study concluded the significance of human activities impact on surface water spatiotemporal distribution. Surface water accretion is significant in most parts of the Qingjiang River Basin and might be related to the constructed cascade hydropower dams. (c) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.JRS.6.063609]
引用
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页数:16
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