大宁调蓄水库水质变化及营养特征分析
Analysis of water quality change and nutrient characteristics of Daning Regulating Reservoir
梁名超 1丁涛 1要然 1赵翔 1翟绍淼 1卢丽1
作者信息
- 1. 北京市南水北调大宁管理处 北京 102442
- 折叠
摘要
为研究大宁调蓄水库水质水量变化规律及营养特征,基于2019-2023年水库水质监测数据,采用单因子法、综合污染指数法评价大宁调蓄水库水质状况,采用营养状态指数法分析大宁调蓄水库营养状态和变化趋势;结合线性回归法,分别分析汛期和非汛期水质与蓄水量、叶绿素a和其他水质指标的相关性.结果表明:水质满足饮用水地表水源地水质标准;营养状态基本处于中营养,汛期水质指标与蓄水量相关程度高于非汛期;叶绿素a与水质指标水温、高锰酸盐指数、pH值的相关程度较高,叶绿素a随水温、高锰酸盐指数呈上升趋势,随pH值呈下降趋势.研究成果为大宁调蓄水库水质保护及富营养化防控提供技术支撑.
Abstract
To study the changes in water quality and quantity,as well as the nutritional characteristics of the Daning Regulating Reservoir,based on the water quality monitoring data from 2019 to 2023,the sin-gle factor method and comprehensive pollution index method were used to evaluate the water quality sta-tus of the Daning Regulating Reservoir from 2019 to 2023,and the nutritional status index method was used to analyze the nutritional status and trends of the Daning Reservoir from 2020 to 2023;Using linear regression,analyze the correlation between water quality and storage capacity,chlorophyll-a,and other water quality indicators during flood and non flood seasons.The results indicate that the water quality meets the water quality standards of surface water sources for drinking water;The nutritional status is ba-sically moderate,and the correlation between water quality indicators and storage capacity during flood season is higher than that during non flood season;The correlation between chlorophyll a and water quali-ty indicators T,CODMn,and pH is high.Chlorophyll a shows an upward trend with water temperature T and CODMn,and a downward trend with pH.The research results provide technical support for water quali-ty protection and eutrophication prevention and control of Daning Regulating reservoir.
关键词
营养特征/单因子法/综合污染指数/营养状态指数/叶绿素a/大宁调蓄水库Key words
nutritional characteristics/single factor method/comprehensive pollution index method/nutritive indexes/chlorophyll a/Daning Regulating Reservoir引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据