Effects of urbanization on water purification of wetlands in the monsoon Asia

2018 Fiscal Year Final Research Report

• Project/Area Number: 17K17662
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Design and evaluation of sustainable and environmental conscious system; Rural environmental engineering/Planning
• Research Institution: Gifu University
• Principal Investigator: Noda Keigo 岐阜大学, 応用生物科学部, 助教 (60646371)
• Research Collaborator: Kimura Masaomi
• Project Period (FY): 2017-04-01 – 2019-03-31
• Keywords: 水環境 / 湿地 / 水質浄化 / 生態系サービス / 農地 / 都市化 / ラオス / ビエンチャン

Outline of Final Research Achievements

The influence of the inflow from urban areas and paddy fields on the seasonal variation of the water environment in the downstream wetland area was clarified for the Mak Hiao River flowing through Vientiane, the capital of Lao PDR. As a result, it is suggested that there is a capacity for the water purification function of the wetland, and that it is possible to utilize this function sustainably by appropriately managing the inflow volume and environmental load amount.

Free Research Field

水利環境学

Academic Significance and Societal Importance of the Research Achievements

本研究では，明瞭な雨季と乾季を有するモンスーンアジアでは，降水量，河川流量の変動によって湿地の水質浄化機能が変動することを示した．この結果は，雨季の洪水を緩和し，乾季の河川流量を維持することによって，湿地の水質浄化機能を強化できることを示唆する．ここで得られた知見は，グリーンインフラとグレーインフラの組み合わせによるNature Based Solutionの社会実装に貢献する．