Chemical composition of surface water in the main tributaries of Lake Baikal _ the Selenga and the Barguzin Rivers

4th School-Seminar of Young Russian Scientists "Problems of Sustainable Regional Development", dedicated to the 70th anniversary of Academician of the Russian Academy of Sciences Arnold Kirillovich Tulokhonov

自然科学（总论）

Bazarzhapov, Ts Zh^1^2^3 ; Shiretorova, V.G.^3 ; Radnaeva, L.D.^3 ; Suocheng, D.^1^2 ; Tulokhonov, A.K.^3

Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing

100101, China^1

University of Chinese Academy of Sciences, Beijing

100049, China^2

Baikal Institute of Nature Management, SB RAS, Ulan-Ude

670047, Russia^3

关键词: Analysis of surface waters;    Available water;    Chemical compositions;    Copper and zinc;    Ion concentrations;    Low water-content;    Maximum concentrations;    River runoffs;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/320/1/012020/pdf
DOI  :  10.1088/1755-1315/320/1/012020

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

Lake Baikal is one of the oldest fresh water bodies on the planet, where the largest available water reserves are concentrated. River runoff plays an important role in the overall balance of substances entering the Lake. The Selenga River is the main tributary of Lake Baikal, in the basin of which, unlike other tributaries, a large number of industrial, agricultural, processing enterprises, settlements and cities are concentrated. The Barguzin River is the third largest river flowing into Lake Baikal, is the basin where intensive development in agriculture and forestry has undertaken. This paper presents the results of the analysis of surface water samples of the Selenga and Barguzin rivers collected during 2015-2016. In 2015, the water level for the Selenga and Barguzin rivers was characterized by extremely low water content, which caused an increase in the concentrations of major ions and trace elements in surface waters. The more favorable water regime in 2016 caused a significant decrease in ion concentrations. Maximum concentrations of iron and manganese are observed in winter and during flooding in the spring. In conditions of low water content, increased copper and zinc contents were also observed in the surface water of the Lake tributaries.