Journal of Geographical Sciences ›› 2020, Vol. 30 ›› Issue (10): 1633-1648.doi: 10.1007/s11442-020-1804-x
• Research Articles • Previous Articles Next Articles
CHAI Yuanfang1,2(), YANG Yunping3,4,*(
), DENG Jinyun2, SUN Zhaohua2, LI Yitian2, ZHU Lingling2
Received:
2020-03-18
Accepted:
2020-05-21
Online:
2020-10-25
Published:
2020-10-27
Contact:
YANG Yunping
E-mail:yuanfangchai@163.com;yangsan520_521@163.com
About author:
Chai Yuanfang, PhD Candidate, specialized in the research on the relationship between climate change and river hydrological response. E-mail: yuanfangchai@163.com
Supported by:
CHAI Yuanfang, YANG Yunping, DENG Jinyun, SUN Zhaohua, LI Yitian, ZHU Lingling. Evolution characteristics and drivers of the water level at an identical discharge in the Jingjiang reaches of the Yangtze River[J].Journal of Geographical Sciences, 2020, 30(10): 1633-1648.
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Table 1
Hydrological and river topography data"
Hydrological station/Reach | Data type | Data characteristics | Period | Data source |
---|---|---|---|---|
Yichang, Zhicheng, Shashi, Jianli, and Luoshan | Flow and water level | Daily, monthly, and annual averages | 1991-2016 | Yangtze River Waterway Bureau and Bureau of Hydrology Changjiang Water Resources Commission |
Dongting Lake (three mouths) and Chenglingji | ||||
Yichang-Chenglingji reach | Terrain | Sediment amount | 2002-2016 | |
Yichang-Luoshan reach | Terrain | 1:10,000 | October 2002, October 2009, and October 2016 |
Table 3
Percentage of widened cross-sections along the Yichang-Chenglingji reach"
Time | Channel characteristics | ΔB > 0 m | ΔB > 20 m | ΔB > 50 m |
---|---|---|---|---|
2003-2009 | Low-flow channel | 68.8 | 41.6 | 28.9 |
Backfill channel | 71.7 | 27.2 | 16.2 | |
Flood channel | 74.6 | 22.0 | 6.4 | |
2009-2016 | Low-flow channel | 70.5 | 46.8 | 31.8 |
Backfill channel | 57.8 | 25.4 | 17.3 | |
Flood channel | 38.7 | 14.5 | 6.94 | |
2003-2016 | Low-flow channel | 71.7 | 57.8 | 43.9 |
Backfill channel | 60.1 | 34.1 | 23.1 | |
Flood channel | 55.5 | 16.8 | 6.94 |
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