摘要
对桂林漓江2017—2021年间7个断面的7个主要水质指标进行主成分分析,得到2个主成分,解释了73.5%的原始变量。结果表明,2017—2021年,漓江水质整体趋势向好;2021年漓江大面至平乐段水质汛期好于非汛期,大溶江段反之;空间上,漓江上段水质最优,下段次之,中段最差,污染源主要来自生活、工业及农业的污水、废水。
Principle component analysis was conducted on seven water quality indexes of seven sections of Lijiang River in Guilin City from 2017 to 2021. Two principle components were obtained, which explains 73.5% of original variables. The results of analysis show the overall trend of water quality of Lijiang River was good from 2017 to2021. In 2021, the water quality in the river section between Damian and Pingle in flood season was better that in non-flood period, while the water quality in Darongjiang section is better in non-flood period. Spatially, the water quality is the best in the upstream section of Lijiang River and the worst in the middle section. The pollution sources are mainly sewage and waste water from living, industry and agriculture.
作者
蒋灵芝
赵童
JIANG Ling-zhi;ZHAO Tong(Hydrology Center of Guilin City,Guilin 541100,China)
出处
《广西水利水电》
2023年第1期138-141,共4页
Guangxi Water Resources & Hydropower Engineering
基金
广西科学研究与技术开发计划重点研发项目《基于卫星遥感影像的河流水库水质污染预警应用技术研究》(桂科AB22080046)。
关键词
主成分分析
污染因子
水质时空特征
漓江
Principal component analysis
pollution factors
water quality spatial and temporal characteristics
Lijiang River
