Evolution characteristics and drivers of the water level at an identical discharge in the Jingjiang reaches of the Yangtze River

Yuanfang CHAI; Yunping YANG; Jinyun DENG; Zhaohua SUN; Yitian LI; Lingling ZHU

doi:10.1007/s11442-020-1804-x

Journal of Geographical Sciences, Volume. 30, Issue 10, 1633(2020)

Evolution characteristics and drivers of the water level at an identical discharge in the Jingjiang reaches of the Yangtze River

Yuanfang CHAI1...2, Yunping YANG3,4,*, Jinyun DENG2, Zhaohua SUN2, Yitian LI2 and Lingling ZHU2 |Show fewer author(s)

Author Affiliations

¹Department of Earth Sciences, Vrije Universiteit Amsterdam, Boelelaan 1085, 1081 HV Amsterdam, The Netherlands

²State Key Laboratory of Water Resources and Hydropower Engineering Science, School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China

³State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China

⁴Key Laboratory of Engineering Sediment, Tianjin Research Institutes for Water Transport Engineering, Ministry of Transport, Tianjin 300456, China

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Figures & Tables(13)

Fig. 1. The location of the middle reaches (Yichang-Luoshan and Jingjiang reaches) of the Yangtze River

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Fig. 2. Measured and simulated water levels at the hydrological stations in 2002, 2009, and 2016

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Fig. 3. Relationships between the water level and water discharge along the middle reaches of the Yangtze River in 2003, 2010, and 2016 at the five hydrological stations

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Fig. 4. Cumulative riverbed erosion volumes along the middle reaches of the Yangtze River

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Fig. 5. Estimation of the riverbed roughness along the middle reaches of the Yangtze River

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Fig. 6. Variation trends in the average water level under the characteristic flows along the middle reaches of the Yangtze River

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Fig. 7. Effects of the influencing factors on changes in the low water levels

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Fig. 8. Variation trends in the flood water level exposed to characteristic flows along the middle reaches of the Yangtze River

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Fig. 9. Effects of the influencing factors on the changes in the flood water level

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Table 1.
Hydrological and river topography data

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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	Flow and water level	Daily, monthly, and annual averages	1991-2016
Yichang-Chenglingji reach	Terrain	Sediment amount	2002-2016
Yichang-Luoshan reach	Terrain	1:10,000	October 2002, October 2009, and October 2016

Table 2.
Representative discharge rates at the hydrological stations located along the middle reaches of the Yangtze River
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Table 2.
Representative discharge rates at the hydrological stations located along the middle reaches of the Yangtze River
Flow Yichang Zhicheng Shashi Jianli Luoshan
Low water flow (m³/s) 6,190 6,490 6,460 6,490 8,460
Flood flow (m³/s) 46,500 46,400 37,600 34,500 45,800

Table 3.
Percentage of widened cross-sections along the Yichang-Chenglingji reach

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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

Table 4.
Variation characteristics for the flood water level (m)
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Table 4.
Variation characteristics for the flood water level (m)
Hydrological station Period of time
1991-2003 2003-2009 2009-2016
Yichang 51.48 51.24 51.66
Zhicheng 47.60 47.22 47.97
Shashi 42.29 41.87 42.48
Jianli 35.69 34.48 35.61
Luoshan 31.87 31.47 32.05

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Yuanfang CHAI, Yunping YANG, Jinyun DENG, Zhaohua SUN, Yitian LI, Lingling ZHU. 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

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Paper Information

Category: Research Articles

Received: Mar. 18, 2020

Accepted: May. 21, 2020

Published Online: Apr. 21, 2021

The Author Email: YANG Yunping (yangsan520_521@163.com)

DOI:10.1007/s11442-020-1804-x

Topics

Resource Economy

Research Articles

Table 1. Hydrological and river topography data

Table 1. Hydrological and river topography data

Table 2. Representative discharge rates at the hydrological stations located along the middle reaches of the Yangtze River

Table 2. Representative discharge rates at the hydrological stations located along the middle reaches of the Yangtze River

Table 3. Percentage of widened cross-sections along the Yichang-Chenglingji reach

Table 3. Percentage of widened cross-sections along the Yichang-Chenglingji reach

Table 4. Variation characteristics for the flood water level (m)

Table 4. Variation characteristics for the flood water level (m)

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Table 1.
Hydrological and river topography data

Table 1.
Hydrological and river topography data

Table 2.
Representative discharge rates at the hydrological stations located along the middle reaches of the Yangtze River

Table 2.
Representative discharge rates at the hydrological stations located along the middle reaches of the Yangtze River

Table 3.
Percentage of widened cross-sections along the Yichang-Chenglingji reach

Table 3.
Percentage of widened cross-sections along the Yichang-Chenglingji reach

Table 4.
Variation characteristics for the flood water level (m)

Table 4.
Variation characteristics for the flood water level (m)