An Integrated Method for Accounting for Water Environmental Capacity of the River–Reservoir Combination System

Zhao, Fen; Li, Chunhui; Chen, Libin; Zhang, Yuan

doi:10.3390/w10040483

Cited by 12 publications

(11 citation statements)

References 29 publications

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“…Recently, many researchers tried to couple the EFDC model with other watershed models in order to identify the effects of nonpoint source pollution [14,28,29]. In addition to that, in this study we also considered the pollutants derived from anthropogenic activities such as cage farming and damming in the tributary with the coupled model.…”

Section: Discussionmentioning

confidence: 99%

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A Coupled Modeling Approach for Water Management in a River–Reservoir System

Zhang

Huang

Zhou

et al. 2019

IJERPH

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A coupled model is an effective tool to understand the nutrient fate associated with hydrodynamic and ecosystem processes and thereby developing a water resource management strategy. This paper presents a coupled modeling approach that consists of a watershed model and a hydrodynamic model to evaluate the nutrient fate in a river–reservoir system. The results obtained from the model showed a good agreement with field observations. The results revealed that the Shuikou reservoir (Fuzhou, China)exhibited complicated hydrodynamic characteristics, which may induce the pattern of nutrient export. Reservoirs can greatly lower water quality as a result of decreasing water movement. Three scenarios were analyzed for water management. The NH3-N (Ammonia Nitrogen) decreased sharply in the outlet of Shuikou reservoir after NH3-N level in its tributary was reduced. After removing the farming cages, the water quality of the outlet of Shuikou reservoir was improved significantly. The DO (Dissolved Oxygen) had increased by 3%–10%, NH3-N had reduced by 5%–17%, and TP (Total Phosphorus) had reduced by 6%–21%. This study demonstrates that the proposed coupled modeling approach can effectively characterize waterway risks for water management in such a river–reservoir system.

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Section: Discussionmentioning

confidence: 99%

“…The findings of our study could be helpful for understanding potential source of the pollutants in the river–reservoir system. The nonpoint source pollution in the watershed might increase in the wet season [29,32]. Moreover, the reservoir construction tributary might amplify the export of the pollution in the wet season.…”

Section: Discussionmentioning

confidence: 99%

A Coupled Modeling Approach for Water Management in a River–Reservoir System

Zhang

Huang

Zhou

et al. 2019

IJERPH

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“…It recognises the complex relationships between hydrological, ecological and socio-economic systems within a catchment, and seeks to integrate different systems, models and stakeholders for water management. Zhao et al [39] integrated a 1D water quality model and an environmental fluid dynamics model to assess the environmental capacity in the Huangshi Reservoir basin, which helped to determine the reduction targets to achieve the water quality requirements in the reservoir. An integrated model was also developed to investigate the flood risk of a key water infrastructure-the South-to-North Water Diversion project in China-and key model parameters were identified by Jin et al [40].…”

Section: Integrated Modelling and Managementmentioning

confidence: 99%

Recent Advances in Adaptive Catchment Management and Reservoir Operation

Zhang

2019

Water

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This editorial introduces the latest research advances in the special issue on catchment management and reservoir operations. River catchments and reservoirs play a central role in water security, community wellbeing and social-economic prosperity, but their operators and managers are under increasing pressures to meet the challenges from population growth, economic activities and changing climates in many parts of the world. This challenge is tackled from various aspects in the 27 papers included in this special issue. A synthesis of these papers is provided, focusing on four themes: reservoir dynamics and impacts, optimal reservoir operation, climate change impacts, and integrated modelling and management. The contributions are discussed in the broader context of the field and future research directions are identified to achieve sustainable and resilient catchment management.

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“…The water environmental capacity (WEC) refers to the maximum amount of pollutants that the water can accommodate under the designed hydrological conditions and the specified environmental objectives without destroying its own function (Zhao et al, 2018). The calculation of the WEC can provide a scientific basis for water pollution control.…”

Section: Introductionmentioning

confidence: 99%

Calculation of water environmental capacity of large shallow lakes – a case study of Taihu Lake

Wang

Bao

et al. 2020

Water Policy

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Lake currents have an important impact on distribution of pollutant concentrations in large shallow lakes. Taking Taihu Lake as an example, in view of the characteristics of wind-driven water flow in the lake, this paper puts forward a water environmental capacity calculation method that uses wind direction and wind speed combined frequency to provide joint correction and pollution zone control for the designed hydrological conditions. In the study, the total length of the pollution belt was controlled to be 10% of the length of the study area, and a mathematical model of two-dimensional unsteady water quantity and quality in Taihu Lake was established. By analyzing the hydrological water quality characteristics and measured data of Taihu Lake in recent years, the flow field and concentration field were simulated and verified, the mathematical model and the plausibility of the parameters were calibrated. The water environmental capacity of Taihu Lake basin was calculated by this method. The calculated results showed that the water environmental capacity of chemical oxygen demand (COD), total phosphorus (TP), and total nitrogen (TN) in Taihu Lake were 113,331 t·a−1, 479 t·a−1 and 6,521 t·a−1. By providing a technical basis for total pollutant control and management in Taihu Lake basin, this study is conducive to the planning and management of water environment.

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An Integrated Method for Accounting for Water Environmental Capacity of the River–Reservoir Combination System

Cited by 12 publications

References 29 publications

A Coupled Modeling Approach for Water Management in a River–Reservoir System

A Coupled Modeling Approach for Water Management in a River–Reservoir System

Recent Advances in Adaptive Catchment Management and Reservoir Operation

Calculation of water environmental capacity of large shallow lakes – a case study of Taihu Lake

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