三峡水库运行前后洞庭湖洲滩面积变化遥感认识

余姝辰; 余德清; 王伦澈; 李长安; 贺秋华; 向菲菲

doi:10.3799/dqkx.2019.182

Volume 44 Issue 12

Dec. 2019

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Article Navigation > Earth Science > 2019 > 44(12): 4275-4283

Yu Shuchen, Yu Deqing, Wang Lunche, Li Chang'an, He Qiuhua, Xiang Feifei, 2019. Remote Sensing Study of Dongting Lake Beach Changes before and after Operation of Three Gorges Reservoir. Earth Science, 44(12): 4275-4283. doi: 10.3799/dqkx.2019.182

Citation:

Yu Shuchen, Yu Deqing, Wang Lunche, Li Chang'an, He Qiuhua, Xiang Feifei, 2019. Remote Sensing Study of Dongting Lake Beach Changes before and after Operation of Three Gorges Reservoir. Earth Science, 44(12): 4275-4283. doi: 10.3799/dqkx.2019.182

Citation:

Yu Shuchen, Yu Deqing, Wang Lunche, Li Chang'an, He Qiuhua, Xiang Feifei, 2019. Remote Sensing Study of Dongting Lake Beach Changes before and after Operation of Three Gorges Reservoir. Earth Science, 44(12): 4275-4283. doi: 10.3799/dqkx.2019.182

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Remote Sensing Study of Dongting Lake Beach Changes before and after Operation of Three Gorges Reservoir

doi: 10.3799/dqkx.2019.182

Yu Shuchen^{1,3
,
,},
Yu Deqing^{4
,
,
,},
Wang Lunche²,
Li Chang'an²,
He Qiuhua^1,4,
Xiang Feifei²

1.
School of Earth Sciences, China University of Geosciences, Wuhan 430074, China
2.
School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China
3.
Hunan Planning Institute of Land and Resources, Changsha 410007, China
4.
Remote Sensing Center of Hunan Province, Changsha 410007, China

Received Date: 2019-05-11
Publish Date: 2019-12-15

Abstract

Abstract

Based on the multi-platform satellite remote sensing data of 128 time-phases, the variation characteristics and causes of the beach in Dongting Lake before and after the operation of the Three Gorges Reservoir (TGR) during 1994-2016 were analyzed in this study. The results show that after the operation of the TGR, the variation range of Dongting Lake water level and beach is smaller than that before the operation, and presents linear relationship. The linear trend of Dongting Lake beach is different in different time periods, showing the characteristics of first expansion and then contraction. Compared with before TGR operation, Dongting Lake beach under the same water level is larger after TGR operation. The higher the water level, the greater the increase. Before the operation of the TGR, Dongting Lake was continuously silted up. After the operation, the sediment deposition has decreased to a negative, and the elevation of beach decreases at a rate of 1.59 mm/a. The operation of TGR and lake sand mining are important influence factors for the change of Dongting Lake beach.
- Dongting Lake,
- impact of Three Gorges reservoir,
- beach area,
- sediment inflow and outflow,
- remote sensing

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References(23)

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