scholarly journals Study on Carrying Capacity of Resources in Danjiangkou Reservoir Area based on GIS Technologies

2021 ◽  
Author(s):  
Ke Liu ◽  
Yuhang Gan ◽  
Zhengyu Luo ◽  
Fanghong Ye
Keyword(s):  
Carrying Capacity ◽  
Reservoir Area ◽  
Danjiangkou Reservoir ◽  
Gis Technologies

scholarly journals Three-dimensional hydrodynamics numerical of wind-driven circulations in Danjiangkou Reservoir

2018 ◽  
Vol 246 ◽  
pp. 02021
Author(s):  
Jie Zhu ◽  
Jin Quan ◽  
Xiaohui Lei ◽  
Xia Yue ◽  
Yang Duan
Keyword(s):  
Wind Speed ◽  
Flow Field ◽  
Potential Flow ◽  
Flow Direction ◽  
Three Dimensional ◽  
Surface Flow ◽  
Surface Velocity ◽  
Wind Condition ◽  
Reservoir Area ◽  
Danjiangkou Reservoir

This paper focuses on the analysis of the flow field of Danjiangkou Reservoir under the action of wind stress. Based on the analysis of the annual wind field data of Danjiangkou Reservoir, the three-dimensional hydrodynamic model of Danjiangkou Reservoir was established. The distribution of water flow field in the reservoir area under five different wind directions and two different wind speeds was studied. The simulation results were compared with the flow field without wind. The results show that when the wind speed in the reservoir area is 3.3m/s, the surface velocity and flow direction change less under the same wind conditions as the potential flow direction. Under the wind condition opposite to the potential flow direction, the reservoir area is locally generated. The small circulation and surface flow are more disordered; when the wind speed reaches 10.0m/s, under the same wind condition as the potential flow direction, the surface velocity of the reservoir area increases significantly. Under the wind condition opposite to the direction of the potential flow, a stable counterclockwise circulation is generated, and the wind direction dominates the surface layer. seriously affecting the flow field distribution in the reservoir area. The research results in this paper can provide support for the reservoir in the formulation of emergency water pollution emergency strategy and the formulation of real-time scheduling plan.

Priority Areas Mapping for Controlling Soil Erosion in Danjiangkou Reservoir Area

2012 ◽  
Vol 610-613 ◽  
pp. 2995-2999
Author(s):  
Li Hui Wang ◽  
Jin Liang Huang ◽  
Yun Du ◽  
Yan Xia Hu ◽  
Peng Peng Han ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Water Conservation ◽  
Influence Factor ◽  
Erosion Control ◽  
Water Transfer ◽  
Reservoir Area ◽  
Danjiangkou Reservoir ◽  
Erosion Risk ◽  
Priority Areas ◽  
Study Results

Danjiangkou reservoir area is the main water source area and submerged area of the Middle Route South-to-North Water Transfer Project of China. Soil erosion is a significant influence factor in reservoir water quality and water transfer project success. The objective of this paper is to assess the soil erosion risk and mapping priority areas for controlling soil erosion of Danjiangkou reservoir area. The results indicated that the top three conservation priority levels cover almost all regions with severe erosion and prominent increase in erosion risk, with a total acreage of 3,531.543km2, accounting for 19.703% of the study area. These three levels to be managed as erosion control regions with appropriate conservation strategies in future projects. The study results will provide guidance in developing and implementing water conservation planning and to assist government agencies in decision-making for determining erosion control area, starting regulation project and making soil conservation measures.

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