Distribution, sources and risk assessment of PAHs in soil from the water level fluctuation zone of Xiangxi Bay, Three Gorges Reservoir

2021 ◽  
Author(s):  
Yingping Huang ◽  
Kun Li ◽  
Huigang Liu ◽  
Xi Yuan ◽  
Meng Li ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Water Level ◽  
Three Gorges Reservoir ◽  
Water Level Fluctuation ◽  
Level Fluctuation ◽  
Three Gorges ◽  
Xiangxi Bay ◽  
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.

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