人民长江2026，Vol.57Issue(3)：16-24,9.DOI:10.16232/j.cnki.1001-4179.2026.03.003
丹江口水库2-甲基异莰醇浓度变化成因和机理分析
Analysis of causes and mechanisms of 2-methylisoborneol concentration variation in Danjiangkou Reservoir
摘要
Abstract
To strengthen the water quality safety guarantee of the Danjiangkou Reservoir,the variation characteristics of 2-methylisoborneol(2-MIB)concentrations and their driving factors were analyzed based on algal monitoring data throughout 2025.The results indicated that:① 2-MIB concentrations were significantly synchronized with total algal density(AD)over time.During the intensive algal proliferation period(August～September),both variables exhibited pronounced peaks,with maxi-mum 2-MIB levels approaching 30 ng/L in the central area of the Danjiang sub-reservoir,45 ng/L at the 0+900 monitoring site downstream of the dam,35 ng/L at the Taocha Boundary Station,and 25 ng/L in the Liangshuihe-Taizishan section.AD displayed a similar spatial gradient.② The distribution of 2-MIB was jointly driven by two groups of factors:water quality and biological factors directly related to algal metabolism,basic factors associated with nutrients and habitat conditions.2-MIB was highly correlated with algal,water temperature(WT),pH,organic matter and nutrients,with particularly significant relationships observed for chlorophyll-a(Chla),total nitrogen(TN),WT,pH and electrical conductivity(EC).Operational measures such as aeration and ultrasonic algal control could regulate the release process of 2-MIB.关键词
2-甲基异莰醇/总藻密度/水质安全保障/丹江口水库Key words
2-methylisoborneol(2-MIB)/total algal density(AD)/water quality safety guarantee/Danjiangkou Reservoir分类
资源环境引用本文复制引用
付婷,路万锋,李清清,张鋆,查悉妮,贾海燕..丹江口水库2-甲基异莰醇浓度变化成因和机理分析[J].人民长江,2026,57(3):16-24,9.基金项目
湖北省自然科学基金项目(JCZRQN202500921) （JCZRQN202500921）
南水北调中线水源有限责任公司科研专项项目(ZSY/YG-ZX(2023)022) （ZSY/YG-ZX(2023）
