THE COMPREHENSIVE USE OF THREE GORGES RESERVOIR UNDER THE ENVIRONMENTAL CHANGEOF YANGTZE RIVER BASIN

2019 ◽  
Author(s):  
HUANG YUKAI ◽  
DUAN MENG ◽  
BAO ZHENGFENG
Keyword(s):  
River Basin ◽  
Yangtze River ◽  
Three Gorges Reservoir ◽  
Yangtze River Basin ◽  
Three Gorges

Regional Climate Evolution in Yangtze River Basin and Three Gorges Reservoir

2013 ◽  
Vol 864-867 ◽  
pp. 2725-2731
Author(s):  
Shu Hua Yin ◽  
Yan Liang Du ◽  
Yu Chun Wang ◽  
Huai Dong Zhou ◽  
Bo Gao ◽  
...  
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Yangtze River ◽  
Three Gorges Reservoir ◽  
Driving Forces ◽  
Yangtze River Basin ◽  
Regional Climate ◽  
Regional Scale ◽  
Three Gorges ◽  
Climate Evolution

Under the background of global climate change, the relationship of the construction of large reservoirs and the regional climate change became one of the hot research topics. Some researchers put forward the theory that the large reservoirs possibly emit considerable green house air, which might affect the regional climate. Three Gorges Reservoir (TGR) is one of large reservoirs in China, and its impacts on local climate are studied in this paper. The large scale long time series of hydrological and meteorological data in 1961~2008 is used to analyze the trend of the air temperature, precipitation, evaporation rate, rainstorm days, fog days, et. all in Yangtze River Basin and TGR area before and after the impoundment of TGR. The paper reveals that the consistency and specificity of the climate evolution in regional scale and country scale. In addition, the internal driving forces for the regional ecological environmental evolution are discussed.

scholarly journals The impact of the Three Gorges Dam on summer streamflow in the Yangtze River Basin

2019 ◽  
Vol 34 (3) ◽  
pp. 705-717
Author(s):  
Zhenkuan Su ◽  
Michelle Ho ◽  
Zhenchun Hao ◽  
Upmanu Lall ◽  
Xun Sun ◽  
...  
Keyword(s):  
River Basin ◽  
Yangtze River ◽  
Yangtze River Basin ◽  
Three Gorges Dam ◽  
Three Gorges ◽  
The Yangtze River ◽  
The Three Gorges ◽  
The Yangtze River Basin ◽  
The Impact ◽  
The Three Gorges Dam

Problems caused by the Three Gorges Dam construction in the Yangtze River basin: a review

2013 ◽  
Vol 21 (3) ◽  
pp. 127-135 ◽  
Author(s):  
Kaifeng Li ◽  
Cheng Zhu ◽  
Li Wu ◽  
Linyan Huang
Keyword(s):  
River Basin ◽  
Yangtze River ◽  
Yangtze River Basin ◽  
Dam Construction ◽  
Three Gorges ◽  
The Yangtze River ◽  
The Three Gorges ◽  
Ecological Problems ◽  
The Yangtze River Basin ◽  
Negative Impacts

Dam is an important way of water-resources utilization in large rivers. To date, more than 50 000 dams with various sizes have been constructed in the Yangtze River basin, with many other dams proposed to be constructed by 2020. Dam construction has played significant roles in flood control, irrigation, navigation, and energy supply; however, the enormous negative effects, such as landslides, ecological problems, and water quality decline, could surpass positive gains. Although a long and complicated evaluation process had been carried out and the countermeasures for numerous foreseen negative impacts of the Three Gorges Dam (TGD) had been implemented, many uncertainties and debating opinions on the benefits and costs of this project still exist. In this review, we synthesize the negative impacts that have occurred as a result of the TGD, including reservoir-triggered seismicity, landslides, water quality control, ecological problems, siltation, and sediment discharge decline to assure an environmentally friendly operation of the TGD and regional sustainable development in the Yangtze River basin, especially in the Three Gorges Reservoir region.

scholarly journals The effect of Three Gorges Dam and rainfall on summer flow risk over Yangtze River Basin

2017 ◽  
Author(s):  
Zhenkuan Su ◽  
Zhenchun Hao ◽  
Michelle Ho ◽  
Upmanu Lall ◽  
Xun Sun ◽  
...  
Keyword(s):  
River Basin ◽  
Yangtze River ◽  
Flood Control ◽  
Linear Models ◽  
Yangtze River Basin ◽  
Three Gorges Dam ◽  
Spatial Average ◽  
Three Gorges ◽  
Efficient Operation ◽  
Average Rainfall

Abstract. As the largest water conservancy project, Three Gorges Dam starts its impoundment in 2003 and henceforth the efficient operation of a multi-purpose dam has aroused a great concern on the effectiveness on flood control and water management over Yangtze River Basin. In this paper, we consider the relationship between rainfall from 136 weather stations and streamflow from 5 hydrological stations including Cuntan, Yichang, Luoshan, Hankou and Datong. Meanwhile, the spatial average rainfall over 21 subbasins was computed. The analysis of the correlation demonstrated that the correlation of spatial average rainfall and streamflow for each station is consistent with that between rainfall by stations and streamflow. Then, two options were selected to develop the linear models, including option a) using rainfall by stations to forecast streamflow and option b) using spatial average rainfall to forecast streamflow. The canonical correlation analysis enabled a large degree of spatially coherent information of rainfall by linear transforms to maximize the correlation of rainfall and streamflow for developing linear models. The model resulting from option b) best fits the observations. Coefficient of determination for each model and statistics such as reduction of error, coefficient of efficiency under cross validation serve as a test of good performance of the model. An analysis of streamflow characteristics across the stations illustrated that the streamflow of Cuntan and Yichang have different modes of variability from that of the rest stations below the dam. The comparison of risk type changes between observations and predictions during the post-dam period showed the dam effectively relieved the risk of upstream while not always played a positive role in risk mitigation of downstream. The spatial and temporal patterns of rainfall anomalies over the whole basin helps to explain how the dam impact the streamflow. Some applications as to possible operational strategies are discussed.

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