摘要
开展百花湖水体水质时空变化分析与多时段水体富营养化评价,对区域居民饮用水安全具有重要的意义。研究基于百花湖2017~2019年4月份(平水期)、8月份(丰水期)、11月份(枯水期)水质数据,采用综合营养状态指数法进行综合评价。结果表明:①百花湖水体水质参数存在较大时空分异,叶绿素a、总氮和高锰酸盐3个水质参数浓度值浮动较大,总磷和透明度相对较平稳;②百花湖水库富营养水平处于中营养-中度富营养之间,年营养水平均整体呈逐年增高后降低的趋势;③5个不同测点中,花桥营养状态最差,岩脚寨和麦西河情况次之,贵铝泵房和大坝情况较好,多呈中营养状态;④百花湖水体营养水平季节差异较大,整体上枯水期水质好于平水期和丰水期。
For the health of drinking water safety of regional residents,it is of great significance to carry out the spatio-temporal variation of water quality and multi-time eutrophication evaluation of Lake Baihua.Based on the water quality data of Baihua Lake in April(normal season),August(wet season)and November(dry season)from 2017 to 2019,the comprehensive nutritional status index method was used for comprehensive evaluation.The results show:①The water quality parameters of Lake Baihua showed great spatial and temporal differentiation.The concentration values of chlorophyll a,total nitrogen and permanganate fluctuated greatly,while the total phosphorus and transparency were relatively stable;②The eutrophication level of Lake Baihua was between medium eutrophication and moderate eutrophication,and the average annual nutrient level showed a trend of increasing year by year and then decreasing;③Among the five different points,Huaqiao had the worst nutritional status,followed by Yanjiaozhai and Maixi River.Gui aluminum pump House and Dam had better nutritional status,and most of them showed moderate nutritional status.④The nutrient level of Lake Baihua has great seasonal differences,and the water quality in dry season is better than that in normal and wet season.
作者
杨家芳
孙小琼
Yang Jiafang;Sun Xiaoqiong(Institute of Mountain Resources of Guizhou Province,Guiyang,Guizhou 550001,China)
出处
《绿色科技》
2023年第2期209-213,共5页
Journal of Green Science and Technology
基金
贵州科学院青年基金项目(编号:黔科院J字[2018]11号)。
