广西河流型湖泊和水库的水质富营养化评价

Eutrophication Assessment of Rivertype Lakes and Reservoirs in Guangxi

选择广西境内人工筑坝形成的11个主要河流型湖泊和水库开展水质监测,采集样品测定叶绿素a、总磷、总氮、透明度和高锰酸盐指数,进行水质富营养化评价。结果显示,广西11个主要河流型湖泊和水库的水质整体处于中营养状态,处于富营养化的初级阶段。南宁、贵港、桂林等广西中部地区湖泊和水库的综合营养状态指数相对较高,河池、百色等西部地区湖泊和水库的综合营养状态指数相对较低,百色市澄碧河更处贫营养状态。

Water samples were collected from 11 Guangxi river-type lakes and reservoirs. The eutrophication of these lakes and reservoirs was evaluated by the detection of chlorophyll a, total phosphorus, total nitrogen, transparency and permanganate index. The result showed that 11 Guangxi river-type lakes and reservoirs were in middle nutritional status, which was the primary stage of eutrophication. The trophic state index of lakes and reservoirs in eastern region of Guangxi was slight high than that in western region of Guangxi. Chengbihe in Baise was even beyond poor nutritional status.