遂宁市观音湖早春富营养化现状及原因分析

摘要

根据2016年遂宁市观音湖早春富营养化调查数据,研究了其现状,并借助近年来的变化趋势,对其成因进行了探讨.研究结果发现,在早春时段观音湖水质呈现出轻度富营养化的现状,右岸的富营养化程度较左岸轻,拟多甲藻是浮游植物中的绝对优势种.观音湖早春富营养化程度呈现出加重的态势,富合营养盐污水的不断注入和每年早春时的适宜气候分别是观音湖发生早春富营养化的内外因素,浮游植物的生存特点和城镇的快速发展助推了观音湖富营养化的发生.最后,针对观音湖早春富营养化的现状和趋势,提出了4条应对措施,以期为观音湖的治理提供参考.%The current situation of the early spring eutrophication of Guanyin lake in Suining was researched based on the investigation data in 2016,the cause of the early spring eutrophication was analyzed through the change tendency for the past few years.The results showed that Guanyin lake water quality in spring was lightly eutrophicated,and the eutrophication of the right bank was lighter than the left bank,Peridiniopsis sp.was the absolute dominant species of phytoplankton.The trend of the early spring eutrophication of Guanyin lake has been becoming worse,the polluted water containing abundant nutritive salt flows into Guanyin lake and suitable climate in every early spring were the internal and external factors.The survival characteristics of phytoplankton and the rapid development of town speed up the lake eutrophication.Finally,four measures were proposed according to the current situation and tendency of the early spring eutrophication of Guanyin lake,in order to provide the reference for the management of Guanyin lake.