Theoretical research and practice of water ecological assessment in tropical island watershed:A case study in Hainan Province
A theoretical and practical approach was taken to systematically and scientifically assess the current water ecology status in the watersheds of Hainan Province,using Hainan Island as an example of tropical island watersheds.An assessment system consisting of 11 indicators for aquatic organisms,water habitats,water environment,and water resources was constructed based on relevant results and outstanding issues in the watershed.The assessment factors were weighted by expert scoring and hierarchical analysis,with the Water Eco-environment Quality Index(WEQI)used to evaluate the ecological status of typical watersheds in Nandu River,Changhua River,and Wanquan River on Hainan Island.Results indicate that dry streams in these rivers have good water ecology levels(63.77～71.57points),while reservoirs are at an average level(41.50～59.55points).Aquatic organisms remain a primary constraint to improving water ecology;human activities are identified as the main cause of damage;reservoirs also face limitations due to ecological water demand.Overall,this study's tropical island water ecology assessment system is accurate and applicable for providing scientific basis for local monitoring and assessment.
万方数据
维普
