Study on the Characteristics of DOM Components and the Influence of Inorganic Ions on the Water Recharge Channel in Baiyangdian Lake
The water source of Baiyangdian was primarily dependent on external water diversion.The study of the hydrochemical characteristics of the replenishment channel was of significant importance for the environmental management of the Inlet River and the maintenance of water quality in the Baiyangdian area.This research focused on the replenishment channels of Baiyangdian,including Baigou Diversion River,Fu River,Xiaoyi River,and Xiaobai River.Various methods such as three-dimensional fluorescence spectroscopy,inductively coupled plasma emission spectroscopy,etc.,were employed to analyze the differences in dissolved organic matter,nutrients,and inorganic ion distribution in different replenishment pathways.The results indicated that:(1)The dissolved organic matter in Baiyangdian replenishment channels comprises humic substances,tyrosine-like compounds,and tryptophan-like compounds.Among them,tyrosine-like compounds and tryptophan-like compounds in Baigou Diversion River account for 82%of the total,while Fu River,Xiaoyi River,and Xiaobai River DOM fluorescence components are mainly humic substances and tyrosine-like compounds,accounting for 97%,84%,and 94%of the total,respectively.(2)Surface water DOM in Baiyangdian replenishment channels was mainly derived from terrestrial inputs and self-biological degradation.The hydrochemical types of Baigou Diversion River,Fu River,and Xiaoyi River were Na·Ca-HCO3,while Xiaobai River was Na·Ca-SO4·Cl.Different replenishment types of rivers exhibit differences in organic and inorganic components.(3)The transformation of dissolved organic matter in river water was influenced by major inorganic ions(Na+,K+,Ca2+,Mg2+,Cl-,SO42-),nutrients.This study provided a foundational support for understanding the transformation effects of dissolved organic matter in river water and the ecological replenishment and aquatic ecological restoration of Baiyangdian.
万方数据
维普
