Analysis of the Present State of Eutrophication of Lake Baikal

贝加尔湖富营养化现状分析

• 批准号: 10041176
• 负责人: WATANABE Yasunori
• 金额: $ 6.59万
• 依托单位: TOKYO METROPOLITAN UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10041176/
• 关键词: Lake Baikal; Eutrophication; lake water; plankton; pelagic zone; littoral zone; ロシア; 環境影響; 湖沼; シベリア; 水質

We investigated the present state of eutrophication of Lake Baikal, Russia. The field surveys using research vessels were conducted with the Russian researchers from The Limnological Institute, Russian Akademy of Science. Although these surveys were integrated ones, we synthesized the results in the following aspects. 1) Analysis of phytoplankton development at the pelagic zone. 2) Distribution of microbial community and its role in lake matter cycles. 3) Distribution of nutrient elements in the littoral-pelagic transient zone. 4) Nutrient physiology of aquatic weeds at the littoral zone. 5) Effects on nutrient ions on the phytoplankton production process. 6) Analysis of matter cycle from the watershed to the pelagic zone. 7) Mechanism of the upwelling process of the lake water at the littoral zone. 8) Analysis of the distribution and the variation of water temperature and underwater light climate. We demonstrated that extensive bloom formation by picocyanobacteria is common phenomena in the broad area of the pelagic zone of L. Baikal during the thermal staratification period. This bloom resulted in the increased organic matter production. We also made clear the interactions within the plankton community, especially with reference to nutrient elements dynamics. As the basis of the eutrophication process in L. Baikal, the flow of organic and inorganic materials could be determined from, the watershed to the lake pelagics via littoral zone. The results of the present study would be useful in making plan for environmental conservation of the Baikal region in future.

我们调查了俄罗斯贝加尔湖的富营养化现状。俄罗斯科学院湖沼研究所的俄罗斯研究人员使用研究船进行了实地调查。虽然这些调查是综合性的，但我们从以下几个方面综合了调查结果。1)浮游植物在水层的发展分析。2)微生物群落分布及其在湖泊物质循环中的作用。3)沿岸-远洋过渡带营养元素的分布。4)沿岸的带水生杂草的营养生理。5)营养盐离子对浮游植物生产过程的影响。6)从流域到远洋区的物质循环分析。7)沿岸的带湖水上涌过程的机理。8)水温和水下光气候的分布与变化分析。我们证明了由微蓝细菌引起的大范围水华在L.贝加尔湖在热恒星化时期。这种水华导致了有机质产量的增加。我们还明确了浮游生物群落内的相互作用，特别是与营养元素动态。作为研究富营养化过程的基础。在贝加尔湖，有机和无机物质的流动可以确定，从流域到湖泊浮游物通过沿岸的带。本文的研究结果对今后贝加尔湖地区的环境保护规划具有一定的参考价值。

项目成果

WATANABE and DRucker: "Ancient Lakes"Kenobi Publisher. 340 (1999)

渡边和德鲁克：《古代湖泊》克诺比出版社。

Watanabe, Yasunori: "Phytoplankton blooms in lake Baikal"Kenobi Production, (Eds Kawanabe, Coulter and Roosevelt.). 340 (1999)

Watanabe，Yasunori：“浮游植物在贝加尔湖中绽放”Kenobi Production，（Eds Kawanabe、Coulter 和 Roosevelt）。

Watanabe, Y., V. Drucker: "Phytoplankton, blooms in Lake Baikal, with reference-to the lake's present state of eutrophication"in "Ancient Lakes : Their Cultural and Biological Diversity" (Eds Kawanabe, Coulter, and Roosevelt), Kenobi Productions, Belgium.

Watanabe, Y., V. Drucker：“浮游植物在贝加尔湖中大量繁殖，参考该湖当前的富营养化状态”，载于“古代湖泊：它们的文化和生物多样性”（Eds Kawanabe、Coulter 和 Roosevelt），克诺比

渡辺泰徳: "Phytoplankton blooms in Lake Baikal with reference to the Lake's present state of eutrophication" “Man and Lakes"単行本 琵琶研究所編. (予定).

Yasunori Watanabe：《贝加尔湖浮游植物的繁荣与湖泊富营养化的现状有关》《人与湖泊》一书，琵琶研究所编辑（计划）。