内容 |
論文 |
巻 |
25巻2/3号2020年
|
Page |
121
|
題名 |
タイ王国・ヨム川流域における統合的水資源管理へ向けた水需給バランスと渇水リスクの評価
|
Title |
Evaluation of Water Stress and Drought Risk for Integrated Water Resources Management in the Yom River Basin, Thailand |
著者 |
岡林あゆみ1),矢澤大志2),橋本征二2),佐藤圭輔2) |
Authors |
Ayumi Okabayashi 1), Taishi Yazawa 2), Seiji Hashimoto 2) and Keisuke Sato 2) |
著者表記 |
1)立命館大学大学院理工学研究科, 2)立命館大学理工学部 |
著者表記(英) |
1) Graduate School of Science and Engineering, Ritsumeikan University, 2) College of Science and Engineering, Ritsumeikan University |
著者勤務先名 |
|
Office name |
|
著者所属名 |
|
キーワード |
統合的水資源管理,HSPF,ヨム川流域,水ストレス,渇水リスク |
Key Words |
IWRM, HSPF, Yom River Basin, water stress, drought risk |
概要 |
本研究では,近年渇水被害の相次ぐタイ王国のヨム川流域における統合的水資源管理へ向け,複数の視点から時空間的な渇水リスクの評価を行った。分布型流域モデルHydrological Simulation Program-FORTRAN (HSPF) を用いて流量と実蒸発散量を計算し,小流域ごとに水需給バランス(社会経済的渇水)と渇水リスク(水文的渇水)を求めた。その結果,水需給バランスが不安定な地域は流域東側に,渇水リスクの高い地域は流域下流部東側に集中していることを確認し,異なる種類のリスク分布を把握し,統合的水資源管理へ向けた効果的なシナリオの検討における有用な知見を得た。 |
Abstract |
This research aims to evaluate spatiotemporal drought risk from multiple perspectives for Integrated Water Resource Management (IWRM) in the Yom River Basin, Thailand. Flow rate and actual evapotranspiration were simulated using a distributed hydrologic model, Hydrological Simulation Program-FORTRAN (HSPF), to estimate water stress and average drought duration for each sub-basin. Water stress is related to the socioeconomic drought risk, while the average drought duration is set as an indicator to assess the hydrological drought risk. The results showed that areas with high water stress located on the east side of the basin. It was also revealed that areas of high drought risk located on the east side of the lower basin. To identify the distribution of multiple drought risks with different drought factors is a useful insight in considering effective scenarios for IWRM. |