Response of Hydrodynamics and Water-quality Conditions to Climate Change in a Shallow Lake

Liu, Bojun; Xia, Jun; Zhu, Feilin; Jin, Quan; Wang, Hao

doi:10.1007/s11269-021-02982-5

Cited by 8 publications

(8 citation statements)

References 36 publications

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“…Considering the unclear hydrodynamic characteristics of Lake Ulansuhai, a two-dimensional hydrodynamic and water quality model was used to simulate the dynamic changes in pollutant transport, diffusion, and degradation under different inflow conditions in the lake area. Based on the topographical features of Lake Ulansuhai, the vertical variation of the lake was ignored, and it was assumed that the hydrodynamic pressure along the water depth followed the distribution of fluid static pressure (Liu et al, 2021b). The two-dimensional depth-averaged hydrodynamic equation of Lake Ulansuhai could be expressed as follows:…”

Section: Hydrodynamic and Water Quality Modelmentioning

confidence: 99%

“…5 indicates the diffusion term, biochemical reaction term in the x and y directions, respectively. S represents the lake pollution load, g/(m 2 •s) (Liu et al, 2021b;Liu et al, 2021c).…”

Section: Hydrodynamic and Water Quality Modelmentioning

confidence: 99%

“…Problems such as less precipitation, high evaporation, and insufficient inflow often occur due to the limitation of climatic conditions, especially in lakes located in arid and semi-arid areas (Wu et al, 2017;Fu et al, 2021). Some lakes lack stable and high-quality water sources due to poor water system connectivity, resulting in insufficient water dynamics and low selfpurification ability (Huser et al, 2016;Rosińska et al, 2018;Liu et al, 2021b). Meanwhile, with the continuous increase in population, the inflow of agricultural drainage, domestic sewage, and industrial wastewater into lakes has exacerbated eutrophication, caused the degradation of water ecological functions, and created a poor lake water environment (Lürling and Oosterhout, 2013;Schindler et al, 2016;Vinçon-Leite and Casenave, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…However, the response of the aquatic ecosystems to the changes in water volume is very sensitive for large shallow lakes or lakes with water resources exceeding the water quality standard, especially shallow lakes with shallow water, weak water dynamics, and complex patterns (Qing et al, 2020). The migration process of pollutants in the lake has a certain time lag effect on the changes in water volume (Liu et al, 2021b), which increases the difficulty of predicting the effect of water replenishment on improving the water quality. Whether water replenishment can really improve the water quality of the lake is a key issue worthy of further research and has practical application value for the protection and restoration of lake ecosystems.…”

Section: Introductionmentioning

confidence: 99%

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Is water replenishment an effective way to improve lake water quality? Case study in Lake Ulansuhai, China

Liu,

Yang,

Cui

et al. 2024

Front. Environ. Sci.

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Lakes are an important component of the global water cycle and aquatic ecosystem. Lake water quality improvement have always been a hot topic of concern both domestically and internationally. Noncompliant outflow water quality frequently occurs, especially for lakes that rely mainly on irrigation return flow as their water source. External water replenishment to improve the water quality of lakes is gradually being recognized as a promising method, which however, is also a controversial method. Lake managers, in the case of constant controversy, hesitate about the appropriateness of lake water replenishing. Thus, taking Lake Ulansuhai in China as an example, this study aimed to construct a lake hydrodynamic and water quality model, under the constraint of multiple boundary conditions, that has sufficient simulation accuracy, and to simulate and analyze the changes in COD (Chemical Oxygen Demand) and TN (Total Nitrogen) concentrations in the lake area before and after water replenishment, and explore whether water replenishment was an effective method for improving lake water quality. The results showed that when the roughness value of Lake Ulansuhai was 0.02, the TN degradation coefficient K was 0.005/d, and the COD degradation coefficient K was 0.01/d; the simulation and measured values had the best fit, and the built model is reasonable and reliable can be used to simulate lake water quality changes. By external water replenishment lasting 140 days in the water volume of 4.925 × 108 m³, the COD and TN concentrations in Lake Ulansuhai could be stabilized at the Class V water quality requirement, which helped improve the self-purification ability of the lake area. Water replenishment was proved to be an effective method for improving the water quality of the lake, but water replenishment is only an emergency measure. Lake water replenishment is more applicable to areas with abundant water resources. External source control and internal source reduction of lake pollution and protection of lake water ecology are the main ways to improve lake water quality for water-deficient areas under the rigid constraints of water resources. In the future, key technologies for reducing and controlling pollution in irrigation areas, construction of lake digital twin platforms, and active promotion of lake legislation work should be the main research direction for managing the lake water environment.

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Section: Hydrodynamic and Water Quality Modelmentioning

confidence: 99%

“…5 indicates the diffusion term, biochemical reaction term in the x and y directions, respectively. S represents the lake pollution load, g/(m 2 •s) (Liu et al, 2021b;Liu et al, 2021c).…”

Section: Hydrodynamic and Water Quality Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Is water replenishment an effective way to improve lake water quality? Case study in Lake Ulansuhai, China

Liu,

Yang,

Cui

et al. 2024

Front. Environ. Sci.

Self Cite

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“…The monitoring of water levels can aid hydrological modeling, help to predict hydrological responses to climatic and anthropogenic changes, and ultimately contribute to their environmental protection and restoration (Ghorbani et al., 2018; Guyennon et al., 2021; Li et al., 2016; Liu et al., 2021; Nõges et al., 2003; Vaheddoost & Aksoy, 2021; Yaseen et al., 2020; Zhang et al., 2011; Zhu et al., 2020). However, measuring lake water levels is hard to implement in practice; pressure sensors, stick and radar gauges, and sonar transducers require continuous maintenance, supervision, and oversight of equipment while gauging locations may be remote or of difficult access (Lawford et al., 2013).…”

Section: Introductionmentioning

confidence: 99%

Tracking Centimeter‐Scale Water Level Changes in Swedish Lakes Using D‐InSAR

Aminjafari,

Brown,

Mayamey

et al. 2024

Water Resources Research

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Lakes are valuable water resources that support aquatic and terrestrial ecosystems and supply fresh water for the agricultural, industrial, and urban sectors worldwide. Although water levels should be tracked to monitor these services, conventional gauging is unfeasible in most lakes. This study applies Differential Interferometric Synthetic Aperture Radar (D‐InSAR) to estimate small water level changes, less than 2 cm, in Swedish lakes over 6‐day intervals. We validated the method across the shores of 30 Swedish lakes with gauged observations in 2019. We used Sentinel‐1A/B images with a 6‐day temporal separation to construct consecutive interferograms and accumulated the phase changes in pixels of high coherence to build a time series of water levels. We find that the accumulated phase change obtained by D‐InSAR replicates the magnitude of water levels in seven lakes in Southern Sweden, where water levels change slowly, less than 2 cm per 6‐day period, as validated by in‐situ gauges. In addition, this study demonstrates the application of D‐InSAR to estimate the long‐term direction of water level change (i.e., increase or decrease) in all 30 lakes. This work reveals the utility of high temporal resolution water level observations in support of other satellite water level instruments such as conventional altimeters and the recently launched Surface Water and Ocean Topography Mission.

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Integrated Hydrodynamic and Water Quality Models in Surface Waters: Focus on Assessment of the Impacts of Climate Change

Kacikoc

2024

Water and Wastewater Management

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Response of Hydrodynamics and Water-quality Conditions to Climate Change in a Shallow Lake

Cited by 8 publications

References 36 publications

Is water replenishment an effective way to improve lake water quality? Case study in Lake Ulansuhai, China

Is water replenishment an effective way to improve lake water quality? Case study in Lake Ulansuhai, China

Tracking Centimeter‐Scale Water Level Changes in Swedish Lakes Using D‐InSAR

Integrated Hydrodynamic and Water Quality Models in Surface Waters: Focus on Assessment of the Impacts of Climate Change

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