scholarly journals Effects of Ecological Water Conveyance on the Hydrochemistry of a Terminal Lake in an Inland River: A Case Study of Qingtu Lake in the Shiyang River Basin

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1673 ◽  
Author(s):  
Yu Zhang ◽  
Guofeng Zhu ◽  
Huiying Ma ◽  
Jianxia Yang ◽  
Hanxiong Pan ◽  
...  
Keyword(s):  
River Basin ◽  
Ion Concentration ◽  
Triangle Diagram ◽  
Inland River ◽  
Shiyang River Basin ◽  
Terminal Lakes ◽  
Drying Up ◽  
Water Conveyance ◽  
Inland Rivers ◽  
Ecological Water Conveyance

Along with the growth of the population and economic and social development, water consumption in the upper-middle reaches of inland rivers is increasing, which has resulted in long-term cutout in the lower reaches of the river, shrinkage and drying up of the wetlands around the terminal lakes, and has caused a series of ecological problems at the same time. In order to protect the fragile ecological environment, comprehensive harnessing projects have been carried out in many inland river basins in China, in which adopting ecological water conveyance to rehabilitate degraded terminal lakes and wetlands is an important means. From June 2014 to October 2017, the water in the upper-middle reaches of the Shiyang River Basin and the lake water of the terminal lake after ecological water conveyance was sampled. The effects of ecological water conveyance on the characteristics of surface water and groundwater were analyzed using, for example, the Piper triangle diagram, Gibbs boomerang envelope model, and mixing diagram. After ecological water conveyance, the ion concentration of water in Qingtu Lake was higher overall, and ion concentration of water in the unstable catchment was higher than that of the stable catchment. The time variation was characterized as high in the summer half year and low in the winter half year. The water of Qingtu Lake is of high and large salinity, and its hydrochemical type is Na–SO4 (Cl), which is obviously different from the water in the middle-upper reaches of the Shiyang River Basin. The effects of silicate weathering and evaporation crystallization are the main factors leading to the high ion concentration in the water of Qingtu Lake. Ecological water conveyance and the strong evaporation of arid areas have intensified the salinization of water and soils in Qingtu Lake. Meanwhile, implementing the ecological water conveyance policy in the terminal lake has also led to shortage of water resources for agricultural irrigation in the middle reaches of the Shiyang River Basin. The serial negative ecological effects of the ecological water conveyance should be emphasized.

Research on Ecological Restoration of Qingtu Lake and Water Resources Scheduling in the Downstream of Shiyang River Basin

2013 ◽  
Vol 361-363 ◽  
pp. 973-976 ◽  
Author(s):  
You Xi Yan ◽  
Xia Yan
Keyword(s):  
Sustainable Development ◽  
Ecological Restoration ◽  
River Basin ◽  
Key Management ◽  
Dynamic Balance ◽  
Regional Environment ◽  
The Sustainable Development ◽  
Shiyang River Basin ◽  
Rivers And Lakes ◽  
Drying Up

The building of the Hongyashan Reservoir leads to the natural watercourse drying up in the downstream of Shiyang River Basin and the Rump lake disappearing. Lining Channels was used to conveying water to Qingtu Lake since the Key Management has been carried out in Shiyang River Basin.In spite of small regional environment improved, the river and the lake can not be connected with each other as the natural watercourse remain discarded.As a result the ecological restoration of Qingtu River can not work effectively.Starting from restoring the ecological function of rivers and lakes, the pattern of conveying water should be changed into supplementing water to Qingtu Lake with the natural watercourse of Shiyang River,connecting the lake and the river.Meanwhile the jointed scheduling mode of surface water and groundwater ensures the dynamic balance of ground water and the sustainable development of oasis.

scholarly journals Groundwater storage changes and estimation of stream lateral seepage to groundwater in desert riparian forest region

2017 ◽  
Vol 49 (3) ◽  
pp. 861-877 ◽  
Author(s):  
Haiyang Xi ◽  
Qi Feng ◽  
Lu Zhang ◽  
Jianhua Si ◽  
Tengfei Yu
Keyword(s):  
River Basin ◽  
Field Experiments ◽  
Riparian Forest ◽  
Groundwater Depth ◽  
Heihe River ◽  
Groundwater Storage ◽  
Inland River ◽  
East River ◽  
Forest Region ◽  
Water Conveyance

Abstract Field experiments were conducted in the lower reaches of the Heihe River basin in the northwest of China to determine relationships between stream and groundwater and to quantify stream lateral seepage. The water table fluctuation, water balance and statistical analysis methods were used to analyze long-term experimental data. Results showed that the groundwater depth along the experimental section responded strongly to the streamflow of the East River in the basin. The streamflow of the East River in all periods significantly influenced the amplitude of groundwater depth within the range of 300 m from the riverbank; the stream lateral seepage was mainly controlled by the streamflow and its durations. The evapotranspiration of riparian forest had used larger proportions of groundwater storage in summer, close to approximating 60%. This study quantified stream lateral seepage to groundwater for different water conveyance and provides support for regional water resources management in an arid inland river basin.

On the Water Ecological Civilization Construction and Strategic Measures of the Sustainable Utilization of Water Resources in Shiyang River Basin

2014 ◽  
Vol 675-677 ◽  
pp. 1072-1076
Author(s):  
Sheng Wu Zhang ◽  
Pei Ji Shi ◽  
Hui Li
Keyword(s):  
Water Resources ◽  
River Basin ◽  
National Level ◽  
Sustainable Utilization ◽  
Ecological Civilization ◽  
Control Plan ◽  
Inland River ◽  
Shiyang River Basin ◽  
Social And Economic Development ◽  
Strategic Measures

Recently Shiyang River Basin in China has been the area with greatest population density, highest utilization level of water resources, least per capita water resources, most striking conflict on water use and most serious ecological problems among inland river basins due to the overexploitation and out-of-order utilization of water resources with rapid social and economic development. The Key Control Plan of Shiyang River Basin was published in 2007, which raised the comprehensive control of Shiyang River Basin to the national level. On the basis of comparison analysis on the utilization of water resources and water ecological civilization construction since the key control of Shiyang River Basin, the strategic measures on the sustainable utilization of water resources are proposed.

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