[A-HW18] 流域圏生態系における物質輸送と循環：源流から沿岸海域まで

[AHW18-10] Anthropogenic impacts on water resources and nutrient flux in Asian coastal megacities

*小野寺 真一¹、齋藤 光代¹、Rusydi Anna²、陳 建耀³、Ridwansyah Iwan² (1.広島大学大学院先進理工系科学研究科、2.インドネシア国立研究革新庁、3.中山大学)

キーワード：アジア沿岸巨大都市、水資源、栄養塩負荷

In Asian megacities, human activities (e.g. urbanization, agriculture, aquaculture etc.) cause degradation of water resources and increase the loads of nutrients and sediments in the coastal area. It is a big challenge to establish the framework of quality management (QM) for water resources (WR) and nutrient flux (NF) in the developing Asian megacities (AMCs) for sustainable water use and ecosystem conservation. To achieve the goal, the purpose of this research is quantifying the WR and NF for appropriate QM in coastal AMCs with different urbanization stages (USs) which consists four specific objects as follows: 1) Assessment of current WR and NF statuses considering vulnerability and resilience to water pollution, 2) Reconstruction of NF history, 3) Future scenario of WR and NF under climate extreme and human impacts, and 4) Framework of QM for WR and NF.

Acknowledgement
This work was supported by APN Project (CRRP2019-09MY-Onodera, PI: Shin-ichi Onodera) and JSPS Project (21KK0192, PI: Shin-ichi Onodera).