大储量运行下密云水库透明度时空分布及影响因素分析
Analysis Of spatiotemporal distribution and influencing factors of transparency in Miyun Reservoir under high reserve operation
王景仕 1陈执锐1
作者信息
- 1. 北京市密云水库管理处 北京 101512
- 折叠
摘要
为更好地掌握密云水库透明度变化情况,选取密云水库2022-2023年监测数据,利用统计分析方法,对研究区内透明度时空分布及影响因素进行分析.密云水库透明度与水深之间呈较为明显的正相关,水越深,透明度均值越大,变化区间也越大,白河库区透明度状况总体优于潮河库区;5-11月透明度总体呈先升后降再升的变化趋势,6-7月达到峰值,9-10月为波谷;藻密度是透明度主要影响因素,与透明度呈较强负相关,相关系数为-0.631;浊度、叶绿素a是影响透明度的重要因素,与透明度呈负相关,相关系数分别为-0.354、-0.280.本研究可为密云水库水环境富营养化治理和水生态保护提供理论上的支持.
Abstract
To better understand the transparency changes in Miyun Reservoir,the monitoring data from 2022 to 2023 were used to analyze the spatial and temporal distribution and influencing factors of trans-parency using statistical analysis methods.There was a noticeable positive correlation between the trans-parency and water depth in Miyun Reservoir,which related to the greater the water depth,the higher the average transparency and the wider the range of variation.The transparency in the Baihe Reservoir area generally was better than in the Chaohe Reservoir area.From May to November,transparency generally showed a trend of rising,then falling,and rising again,which reached its peak in June to July and its trough in September to October.Algal density was the main influencing factor of transparency,showing a strong negative correlation with a correlation coefficient of-0.631.Turbidity and chlorophyll-a were im-portant influencing factors of transparency,also showing negative correlations with correlation coefficients of-0.354 and-0.280,respectively.This study can provide theoretical support for the eutrophication man-agement and aquatic ecosystem protection of Miyun Reservoir.
关键词
密云水库/透明度/时空分布/相关分析/藻密度Key words
Miyun Reservoir/transparency/spatiotemporal distribution/correlation analysis/algal density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