Material dynamics and ecological change in extra long water system, Hovosgol-Baikal-Yenisei area

我们进行了一个湖沼学的实地调查，在上半部分的Hovosgol -贝加尔湖-叶尼塞水系（长度：5500公里），从Hovosgol湖（蒙古）到乌斯季伊利姆斯克湖（俄罗斯）。因此，几乎整个地区的水系统进行了调查，目前的工作和以前的研究具有相同的研究标题期间，从2006年至2008年的资助科学研究-KAKENHI（科学研究（A）海外学术研究，18255001）。阐明了水体中的水质和微生物生态系统随河流的断流和湖泊的滞流而发生变化。在该水系的源头和流入大型人工湖的主要河流的河口附近观察到了明显的趋势。

We conducted a limnological field survey in the upper half of Hovosgol - Baikal - Yenisey water system (length: 5500 km) from Lake Hovosgol (Mongolia) to Lake Ust-Ilimsk (Russia). Therefore, almost whole area of the water system was surveyed by the present work and the previous research with same research title during from 2006 to 2008 promoted with the Grants-in-Aid Scientific Research-KAKENHI (Scientific Research (A) Overseas Academic Research, 18255001). Water quality and ecological system of micro-organisms were elucidated to be changed with flowing down of water in rivers and water stagnation in lakes in the water system. Its tendency was markedly observed around the source of this water system and the mouth of the main river flowing into a large artificial lake.