Impact of the Three Gorges Project operation on the water exchange between Dongting Lake and the Yangtze River

2017 ◽  
Vol 32 (4) ◽  
pp. 506-514 ◽  
Author(s):  
Minglong Dai ◽  
Jun Wang ◽  
Mingbo Zhang ◽  
Xi Chen
Keyword(s):  
Yangtze River ◽  
Water Exchange ◽  
Dongting Lake ◽  
Three Gorges Project ◽  
Three Gorges ◽  
The Yangtze River ◽  
The Three Gorges ◽  
The Three Gorges Project

Zonation of the landslide hazards in the forereservoir region of the Three Gorges Project on the Yangtze River

2001 ◽  
Vol 59 (1-2) ◽  
pp. 51-58 ◽  
Author(s):  
Shuren Wu ◽  
Ling Shi ◽  
Reijiang Wang ◽  
Chengxuan Tan ◽  
Daogong Hu ◽  
...  
Keyword(s):  
Yangtze River ◽  
Three Gorges Project ◽  
Three Gorges ◽  
The Yangtze River ◽  
The Three Gorges ◽  
Landslide Hazards ◽  
The Three Gorges Project

scholarly journals Effects of the Three Gorges Project on Runoff and Related Benefits of the Key Regions along Main Branches of the Yangtze River

Water ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 269 ◽  
Author(s):  
Yanjun Gao ◽  
Yongqiang Zhang
Keyword(s):  
Yangtze River ◽  
Flood Control ◽  
Three Gorges Project ◽  
Three Gorges ◽  
The Yangtze River ◽  
Annual Fluctuation ◽  
The Core ◽  
The Three Gorges ◽  
Core Areas ◽  
The Three Gorges Project

The Three Gorges Project (TGP) is the largest hydroelectric project in the world. It is crucial to understand the relationship between runoff regime changes and TGP’s full operation after 2009 in the Yangtze River Basin (YRB). This paper defines core, extended and buffer areas of YRB, analyzes the effects of TGP on runoff anomaly (RA), runoff variation (RV) and change of coefficient of variation (CCV) between two periods (2003–2008 and 2009–2016), takes percentage of runoff anomaly (PRA) as the evaluation standard, assures alleviation effect on severe dry and wet years of the research area, and finally summarizes related benefits of flood control from TGP. Our results indicate the inter-annual fluctuation of runoff in the core and extended areas expanded, but reduced in the buffer areas, and the frequencies of severe dry and wet years alleviated in the buffer, core and extended areas. Generally, the extended and core areas become less wet, and the buffer areas become less dry. The RV and CCV are both strengthened in the extended and core areas, but are weakened in the buffer areas, and RV is well positively correlated (R2 = 0.80) to CCV. Furthermore, the main benefits of TGP on flood control are remarkable in the reduction of disaster affected population, the decrease of agricultural disaster-damaged area, and the decline of direct economic loss. However, due to torrentially seasonal and non-seasonal precipitation, the sharp rebounds of three standards for Hubei and Anhui occurred in 2010 and 2016, and the percentage of agricultural damage area of five regions in the core and extended areas did not decline synchronously and performed irregularly. Our results suggest that the five key regions along the main branches of the Yangtze River should establish a flood control system and promote the connectivity of infrastructures at different levels to meet the significant functions of TGP. It is a great challenge for TGP operation to balance the benefits and conflicts among flood control, power generation and water resources supply in the future.

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