陕西红碱淖湖泊水体富营养化评价

摘要

采用综合营养状态指数法对红碱淖湖泊水体富营养化现状进行评价，并根据底泥营养元素数据，分析红碱淖湖泊水体富营养化的原因。结果表明：红碱淖为轻度富营养化水平；红碱淖湖泊富营养化的原因是，外源营养物质汇入，湖泊面积萎缩，湖水咸化，pH值升高。提出红碱淖生态环境保护措施：控制外源营养物质汇入，加强流域水资源保护，进行生态补水。%The current level of the eutrophication in Hongjianao Lake was evaluated by using the synthetically nutrition state index. And according to the sediment nutrient element data,it analyzed the cause of the Hongjiannao Lake eutrophication. The result shows that the current eutrophica-tion in Hongjiannao Lake is of the level of mild. By integrating the results of surface deposit analysis,the authors point out that the exogenous nutri-ents input might be the most important reason for the current eutrophication. Based on these results,some measures for the future protection were proposed,such as controlling the exogenous pollution,tightening the management of the regional water resources and transferring water from the Yellow River to guarantee the ecological runoff of the lake.