Core Viewpoint - The article emphasizes the ecological value and potential applications of submerged plants in water quality purification and ecosystem restoration in the Hexi Corridor of Gansu Province, highlighting their roles in pollution absorption, nutrient removal, and aesthetic enhancement. Group 1: Ecological Functions of Submerged Plants - Submerged plants can absorb and adsorb pollutants, playing a crucial role in the treatment of eutrophic lakes and wetlands by taking up nutrients like nitrogen and phosphorus from water and sediments [1] - They can decompose pollutants with the help of microorganisms, creating a conducive environment for microbial metabolism, which is essential for removing ammonia nitrogen [1] - Submerged plants suppress algal growth by competing for light and nutrients, thus preventing water eutrophication [2] - They increase carbon sinks and dissolved oxygen levels through photosynthesis, which enhances the self-purification capacity of water bodies [2] - Submerged plants contribute to the beautification of water landscapes, providing aesthetic value and creating vibrant underwater ecosystems [2] Group 2: Research and Application - The Gansu Zhangye Ecological Environment Bureau is conducting research on the water quality purification capabilities of local submerged plants using urban wastewater as experimental water [2][3] - The study indicates that using a combination of different submerged plants can enhance pollutant removal rates and maintain ecosystem stability, with specific combinations like Potamogeton crispus + Cladophora and Potamogeton crispus + Alopecurus geniculatus showing superior results [3] - Recommendations include utilizing submerged plants in constructed wetlands for wastewater treatment and ecological restoration projects, emphasizing the selection of native species for better survival rates [4][5]