流溪河畔添“生态滤池” ，2000平米人工湿地守护珍稀鱼类家园

Core Viewpoint - The construction of a 2000 square meter artificial wetland in Guangzhou's Conghua District aims to protect the rare fish species, particularly the Guangdao Cichlid, and enhance the ecological environment of the Liuxi River [2][4][5]. Group 1: Project Overview - The artificial wetland was designed and implemented by the Pearl River Fisheries Research Institute of the Chinese Academy of Fishery Sciences and has successfully passed inspection [3][28]. - This wetland serves as an ecological compensation project for the reinforcement and renovation of the Dacao Dam, playing a crucial role as an "ecological filter" in the Guangdao Cichlid National Aquatic Germplasm Resource Protection Area [4][5]. Group 2: Construction and Planting Strategy - The construction team took advantage of the dry season in late December 2025 to efficiently complete the wetland within a week, which significantly improved the survival rate of aquatic plants [6][9]. - A scientific planting scheme was developed based on water depth variations, with 1000 square meters of submerged plants like black algae and potamogeton planted in deeper areas, and 1000 square meters of emergent plants like water caltrop and bulrush in shallower areas [12][13][14]. Group 3: Ecological Impact - The newly constructed wetland aligns with the protection goals of the Guangdao Cichlid National Aquatic Germplasm Resource Protection Area, providing essential habitats for rare fish species [16][17]. - Monitoring data indicates a significant recovery trend in the Guangdao Cichlid population, with annual surveys showing an increase from over 20 individuals before 2016 to 50-80 individuals in recent years, with the largest individuals weighing over 2 kg [21][25]. Group 4: Water Quality Improvement - The wetland functions as a "natural kidney" for the Liuxi River, utilizing aquatic plants to purify water by absorbing excess nutrients and reducing the risk of eutrophication [30][32][36]. - The root systems and foliage of submerged and emergent plants help improve water clarity and enhance the growth environment for aquatic organisms [33][35]. Group 5: Future Plans and Community Engagement - The Dacao Dam reinforcement project incorporates ecological compensation measures, embodying the principles of "ecological priority and green development," and aims to provide replicable experiences for ecological protection [40][41]. - Continuous monitoring of the wetland's long-term effects on fish resource protection and water quality improvement is planned, with intentions to promote this ecological restoration model in suitable areas [42][43].