Numerical investigation of the effects of aquatic plants on wind-induced currents in Taihu Lake in China

Numerical Investigation of the Effects of Aquatic Vegetation on Wind-Induced Wave and Current Characteristics in Shallow Lakes

“…In view of the three-dimensional flow, the RANS equations are solved with a vegetation drag term in the momentum equations and the corresponding vegetation-induced turbulence production terms in the turbulence closure equation (standard k-ε turbulence model, GLS model, and LES method, and other methods) (Jin et al, 2007;Chi-wai and Afis, 2019); this methodology has been verified by a large number of flume data with varying vegetation submergence ratios, densities, and velocities areas (Kombiadou et al, 2014). Scholars have used the numerical simulation method to simulate the influence of vegetation on the wind-induced current in the shallow lakes, but these studies are based on the two-dimensional hydrodynamic model (Xu et al, 2018) and use the method of increasing local Manning coefficient to simulate the vegetation resistance (Li et al, 2020), so it is unable to describe the submerged vegetation effect and the three-dimensional characteristics of shallow lake flow field. In recent years, several open-source three-dimensional models which allow custom editing to study the complex interactions between vegetation and water flow have been developed, such as FVCOM (Morales-Marín et al, 2017), SCHISM (Zhang et al, 2019b), and ROMS (Beudin et al, 2017).…”

“…Among them, submerged vegetation is dominated by Vallisneria natans and Ceratophyllum demersum L., emergent vegetation is dominated by Phragmites australis and Zizania latifolia, and floating vegetation is dominated by Potamogeton microdentatus. We used Vallisneria natans and Phragmites australis as the dominant of submerged vegetation and emergent vegetation, respectively, considering the influence of floating vegetation on the flow field of shallow lake is relatively small compared with the other two kinds of vegetation (Xu et al, 2018). In this study, only the effects of submerged vegetation and emergent vegetation on the characteristics of wind-driven current and wave are considered.…”

Review of the Occurrence of Herbicides in Environmental Waters of Taihu Lake Basin and Its Potential Impact on Submerged Plants

“…Aquatic ecosystems provide irreplaceable economic services to human society [1], but are currently experiencing severe losses compared with terrestrial ecosystems [2]. Lakes, especially shallow lakes, as the most important part of aquatic ecosystems, are facing a series of eco-environmental problems such as reduced water area, fragmented ecosystems, decreased biodiversity, and weakened ecological functions under human impacts [3][4][5]. The Taihu Lake has always been seen as a typical shallow lake in China.…”

The study on the comparative responses of aquatic vegetation to the interannual water level variation in different hydrologically connected sub‐lakes based on GEE technology

“…As the dominant primary producer in subtropical lakes, aquatic vegetation exerts a significant influence on ecosystem dynamics (Chen et al, 2022; Keramaris et al, 2022). Specifically, aquatic vegetation can provide habitats and foods for aquatic fauna and can help to remediate pollutants in lakes by physical interception, precipitation, absorption, transformation and allelopathic purification (Abdeen, 2008; Xu et al, 2019). However, most aquatic vegetation ecosystems have suffered degradation during the past few decades under the dual stresses of water conservancy projects, such as reservoir and dam, and climate change (Firoozi et al, 2020; Park et al, 2018).…”