scholarly journals Restoration and Dynamic Pattern of Natural Herbaceous Vegetation of Xiangxi River�s Water-Level Fluctuation Zone in the Three Gorges Reservoir Area

2015 ◽  
Author(s):  
Jianxia Xu ◽  
Jianzhu Wang ◽  
Bin Lu ◽  
Heng Xie ◽  
Lei Li ◽  
...  
Keyword(s):  
Water Level ◽  
Three Gorges Reservoir ◽  
Three Gorges Reservoir Area ◽  
Level Fluctuation ◽  
Three Gorges ◽  
Herbaceous Vegetation ◽  
Reservoir Area ◽  
The Three Gorges ◽  
Xiangxi River ◽  
Water Level Fluctuation Zone

Restoration of Natural Herbaceous Vegetation of Xiangxi River’s Water-Level Fluctuation Zone after the Flooding in Three Gorges Reservoir Area

2012 ◽  
Vol 599 ◽  
pp. 739-743 ◽  
Author(s):  
Cheng Hu Zhang ◽  
Ting Ting Song ◽  
Ju Liu ◽  
Hui Juan Xia ◽  
Jian Zhu Wang
Keyword(s):  
Water Level ◽  
Plant Communities ◽  
Three Gorges Reservoir ◽  
Life Story ◽  
Water Level Fluctuation ◽  
Three Gorges Reservoir Area ◽  
Level Fluctuation ◽  
Three Gorges ◽  
Reservoir Area ◽  
Water Level Fluctuation Zone

Water-level fluctuation zone (WLFZ) is the security barrier of reservoir. Herbaceous vegetation’s restoration characteristic of Xiangxi River’s WLFZ in Three Gorges reservoir area was investigated by using ecological methods. The results show that: The main plant types are annual herbs and perennial herbs, and plant communities are patchiness or zonal distribution. Two absolute dominant plant communities are build by Cynodondactylon(Linn.)Pers. and Rhizoma Cyperi (Nutgrass Galingale Rhizome) in the 145-155m area, and annual herbs are mainly distributed above the 155m area. As the elevation increasing, the β diversity increases. There are 22 dominant species of herbaceous in Xiangxi River’s WLFZ, 16 plants could complete life story, and 5 plants’ life story are threatened by impounding. Polygonum lapathifolium Linn.may not complete its life story.

scholarly journals Precipitation Changes in the Three Gorges Reservoir Area and the Relationship with Water Level Change

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6110
Author(s):  
Qin Li ◽  
Xiuguo Liu ◽  
Yulong Zhong ◽  
Mengmeng Wang ◽  
Manxing Shi
Keyword(s):  
Water Level ◽  
Three Gorges Reservoir ◽  
Precipitation Anomaly ◽  
Three Gorges Reservoir Area ◽  
Three Gorges ◽  
Reservoir Area ◽  
Precipitation Concentration ◽  
The Three Gorges ◽  
Before And After ◽  
Precipitation Changes

As the largest hydroelectric project worldwide, previous studies indicate that the Three Gorges Dam (TGD) affects the local climate because of the changes of hydrological cycle caused by the impounding and draining of the TGD. However, previous studies do not analyze the long-term precipitation changes before and after the impoundment, and the variation characteristics of local precipitation remain elusive. In this study, we use precipitation anomaly data derived from the CN05.1 precipitation dataset between 1988 and 2017 to trace the changes of precipitation before and after the construction of the TGD (i.e., 1988–2002 and 2003–2017), in the Three Gorges Reservoir Area (TGRA). Results showed that the annual and dry season precipitation anomaly in the TGRA presented an increasing trend, and the precipitation anomaly showed a slight decrease during the flood season. After the impoundment of TGD, the precipitation concentration degree in the TGRA decreased, indicating that the precipitation became increasingly uniform, and the precipitation concentration period insignificantly increased. A resonance phenomenon between the monthly average water level and precipitation anomaly occurred in the TGRA after 2011 and showed a positive correlation. Our findings revealed the change of local precipitation characteristics before and after the impoundment of TGD and showed strong evidence that this change had a close relationship with the water level.

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