Biogeochemical characteristics of the Hövsgöl–Ustilimsk water system in Mongolia and Russia: the effect of environmental factors on dissolved chemical components

IF 1.4 4区 环境科学与生态学 Q3 LIMNOLOGY Limnology Pub Date : 2022-01-03 DOI:10.1007/s10201-021-00694-8
Hosoda, Ko, Murata, Takahiro, Mochizuki, Akihito, Katano, Toshiya, Tanaka, Yuji, Mimura, Tetsuro, Mitamura, Osamu, Nakano, Shin-ichi, Sugiyama, Yuko, Satoh, Yasuhiro, Watanabe, Yasunori, Dulmaa, Ayuriin, Ayushsuren, Chananbaatar, Ganchimeg, Darmaa, Drucker, Valentin V., Fialkov, Vladimir A., Sugiyama, Masahito
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Abstract

The objective of this study is to clarify the biogeochemical characteristics of the Hövsgöl–Ustilimsk water system in Mongolia and Russia. For this purpose, we measured dissolved major elements, minor elements, and nutrients in surface water throughout the system. Calcium ions and HCO3 + 2CO3 were the dominant cations and anions in Lake Hövsgöl, respectively. As the water flows down from Lake Hövsgöl to the Egiin Gol and Selenga Rivers in Mongolia, the water quality derived from carbonate rock was found to be influenced by river confluences. In the Selenga River in Russia, major elements were diluted with low-salinity waters from the tributaries. At the boundaries between the Angara River and Bratsk or Ustilimsk Reservoirs, the behaviors of nutrients were affected by the transition of the water area from a riverine zone to a lacustrine zone. Although the composition of cations and anions changes gradually as river water flows further downstream, the water type remains to be Ca–HCO3 throughout the system. Thus, it can be concluded that the fundamental water quality of this system was determined in northern Mongolia, the source area of this water system, and that the environmental factors such as the climate, geology and, geography in its basin from Hövsgöl to Ustilimsk regulated the dissolved chemical components.

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蒙古和俄罗斯Hövsgöl-Ustilimsk水系生物地球化学特征:环境因素对溶解化学成分的影响
本研究的目的是阐明蒙古和俄罗斯Hövsgöl-Ustilimsk水系的生物地球化学特征。为此,我们测量了整个系统中地表水中溶解的主要元素、次要元素和营养物质。在Hövsgöl湖中,钙离子和HCO3 + 2CO3分别为优势阳离子和阴离子。从Hövsgöl湖向下游流入蒙古的埃金戈尔河和色楞嘎河时,发现碳酸盐岩水质受到河流汇合处的影响。在俄罗斯的色楞加河(Selenga River),主要元素被支流的低盐度水稀释。在安加拉河与Bratsk或Ustilimsk水库之间的边界,水体由河带向湖带的过渡影响了营养物的行为。尽管随着河水进一步向下游流动,阳离子和阴离子的组成逐渐发生变化,但整个系统的水类型仍然是Ca-HCO3。因此,可以得出结论,该系统的基本水质是在该水系的源区蒙古北部决定的,其流域从Hövsgöl到乌斯季利姆斯克的气候、地质和地理等环境因素调节了溶解化学成分。
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来源期刊
Limnology
Limnology 地学-湖沼学
CiteScore
4.30
自引率
6.20%
发文量
15
审稿时长
>12 weeks
期刊介绍: Limnology is a scientific journal published three times a year, in January, April, and August, by Springer in association with the Japanese Society of Limnology. The editors welcome original scientific contributions on physical, chemical, biological, or related research, including environmental issues, on any aspect of basic, theoretical, or applied limnology that present significant findings for the community of scholars. The journal publishes Rapid communications, Research papers, Review articles, Asia/Oceania reports, and Comments. The aims and scope of Limnology are to publish scientific and/or technical papers in limnological sciences, to serve as a platform for information dissemination among scientists and practitioners, to enhance international links, and to contribute to the development of limnology.
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