Numerical Analysis of the Impact Factors on the Flow Fields in a Large Shallow Lake

Haifei Liu,Qiang Liu,Zhexian Zhu,Jingling Liu

doi:10.3390/w11010155

Abstract

Wetland acts as an important part of climatic regulation, water purification, and biodiversity maintenance. As an integral part of wetlands, large shallow lakes play an essential role in protecting ecosystem diversity and providing water sources. Baihe Lake in the Momoge Wetland is one such example, so it is necessary to study the flow pattern characteristics of this lake under different conditions. A new model, based on the lattice Boltzmann method, was used to investigate the effects of different impact factors on flow fields, such as water discharge from surrounding farmland, rainfall, wind speed, and aquatic vegetation. Importantly, this study provides a hydrodynamic basis for local ecological protection and restoration work.

Highlights

There are many wetlands in China that play an important role in water resource conservation and ecological diversity maintenance
The shrinking of wetland area is closely related to the decrease of water resources in wetlands, and the atrophy of lake area is directly impacted by the shrinking of wetland area [3]
The results indicated that the mean flow rate is much bigger in July than September, which verifies the significance of different impact factors

Summary

Introduction

There are many wetlands in China that play an important role in water resource conservation and ecological diversity maintenance. Wetlands have irreplaceable ecological significance for human survival [1]. China has emphasized wetland protection over the past few decades, there remains a sharp decline in the area of wetlands [2]. China Forestry Administration, China’s wetland area fell by 8.83% in 2013, compared with that of. The shrinking of wetland area is closely related to the decrease of water resources in wetlands, and the atrophy of lake area is directly impacted by the shrinking of wetland area [3]. It is of vital importance to study the water flow in lakes to find out the feasible measures for wetland conservation [1,4]

Methods

Results

Discussion

Conclusion