Evaluating sustainability of wetland system: A case study in East Dongting Lake Area, China

2011 ◽  
Vol 6 (28) ◽  
Author(s):  
Yaxin Wang
Keyword(s):  
Dongting Lake ◽  
Lake Area ◽  
Dongting Lake Area ◽  
System A ◽  
Wetland System

scholarly journals Surface Deformation Retrieving Over Soft Clay Based on an Improved Time Series InSAR Model: A Case Study of Dongting Lake Area, China

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 195703-195720
Author(s):  
Yikai Zhu ◽  
Xuemin Xing ◽  
Zhihui Yuan ◽  
Liang Bao ◽  
Lingjie Zhu ◽  
...  
Keyword(s):  
Time Series ◽  
Surface Deformation ◽  
Soft Clay ◽  
Dongting Lake ◽  
Lake Area ◽  
Dongting Lake Area

Municipal wastewater treatment with pond–constructed wetland system: a case study

2005 ◽  
Vol 51 (12) ◽  
pp. 325-329 ◽  
Author(s):  
X. Wang ◽  
X. Bai ◽  
J. Qiu ◽  
B. Wang
Keyword(s):  
Constructed Wetland ◽  
Municipal Wastewater ◽  
Municipal Wastewater Treatment ◽  
Oxidation Pond ◽  
System A ◽  
Treated Effluent ◽  
Wetland System ◽  
Oxidation Ponds ◽  
Better Than

The performance of a pond–constructed wetland system in the treatment of municipal wastewater in Kiaochow city was studied; and comparison with oxidation ponds system was conducted. In the post-constructed wetland, the removal of COD, TN and TP is 24%, 58.5% and 24.8% respectively. The treated effluent from the constructed wetland can meet the Chinese National Agricultural and Irrigation Standard. The comparison between pond–constructed wetland system and oxidation pond system shows that total nitrogen removal in a constructed wetland is better than that in an oxidation pond and the TP removal is inferior. A possible reason is the low dissolved oxygen concentration in the wetland. Constructed wetlands can restrain the growth of algae effectively, and can produce obvious ecological and economical benefits.

Impact of the Three Gorges Reservoir Flood Prevention Dispatching Tohydrologic Information and Disaster Information in Dongting Lake Area

2012 ◽  
Vol 518-523 ◽  
pp. 3652-3661
Author(s):  
Jing Bao Li ◽  
Ying Chao Guo ◽  
Zhong Hua Zhao ◽  
Hong Shuai ◽  
Lei Xie
Keyword(s):  
Three Gorges Reservoir ◽  
Flood Control ◽  
Dongting Lake ◽  
Lake Area ◽  
Three Gorges ◽  
Flood Prevention ◽  
The Three Gorges Reservoir ◽  
Dongting Lake Area ◽  
The Three Gorges ◽  
Disaster Information

Use the flood years (1998、2010) the data of the hydrologic information and disaster information, comparative analysis the impact on hydrologic information and disaster information in Dongting Lake area of the Three Gorges Reservoir flood prevention dispatching .The results show that: the inflow of lake into Jingjiang Sankou reduces about 242.61 × 108 m3,the flood level of Hukou Chenglingji lowers 0.82m, the daily average increasing rate of flood peak level slows 0.23m, the over-warning water level duration time reduces 62d; both have saved a great deal of flood control emergency rescue and disaster relief material consumption, manpower input, namely RMB 0.638 x 108yuan, and reduce the lake area flood damage 19.983 x 108yuan; in the process of 5 times flood prevention dispatching of the Three Gorges Reservoir, three times in July to alleviate flood control operation regime, disaster in Dongting Lake area the contribution of the largest, flood control operation effect is not very sensitive in June, and the impound floodwater sums to 80.7×108m3, not only of the lake area is no sense of flood control, but also because the flood retention of reservoir is more, the water of Sankou into the lake is greatly reduced, and Hunan sishui has begun to enter withered period, total amount into the lake gradually reduce, make the Dongting Lake water into withered period early; the ability of the Three Gorges Reservoir flood prevention dispatching operation to the flood prevention function is very limited, from the overall and long-term ways ,to enhance their ability of flood prevention and disaster alleviation of Dongting Lake area is still an important and comprehensive affairs.

Study on Flow and Sediment Diversion at Four Inlets of Dongting Lake and Tendency and Influences of Erosion-Deposition Variation

2012 ◽  
Vol 212-213 ◽  
pp. 10-19 ◽  
Author(s):  
Ming Hua Deng ◽  
Ka Bo Liu ◽  
Zhen Yu Luan
Keyword(s):  
Dongting Lake ◽  
Three Gorges Project ◽  
Lake Area ◽  
Three Gorges ◽  
Middle Reach ◽  
Dongting Lake Area ◽  
The Three Gorges ◽  
Simulation Calculation ◽  
The Three Gorges Project ◽  
Sediment Model

Through analyzing 50-year hydraulic data and by means of water-sediment model of middle reach of Yangtze River for numerical simulation calculation, it studies flow and sediment diversion at Four Inlets of Dongting Lake and tendency and impacts of erosion-deposition variation, and predicts the conditions of Three Gorges Project after 30 years’ operation. It can be found that flow and sediment diversion at Four Inlets of Dongting Lake are decreasing and the zero flow period is constantly prolonged. River courses at Four Inlets and Dongting Lake continue to deposit and shrink, and the problem of water resource in the Dongting Lake area is becoming more serious than before. Operation of the Three Gorges Project has not changed this trend and with the time of the operation goes on, the trends of flow and sediment diversion and erosion-deposition at Four Inlets river courses and Dongting Lake will be more detrimental to the water resources in the Dongting Lake area and its problem will continue to deteriorate.

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