Spatiotemporal drought analysis and future risk assessment using multi-index remote sensing approach and hybrid
Ahmet Batuhan Polat1, Egehan Alumert2, Ozgun Akcay2
1Faculty of Engineering, Geomatics Engineering, Canakkale Onsekiz Mart University, Çanakkale, 17020, Türkiye. abpolat@comu.edu.tr.
Environmental monitoring and assessment
|January 12, 2026
まとめ
This study assessed drought in Çanakkale province using remote sensing over 20 years. Projections show increasing drought risk, highlighting the need for climate adaptation strategies in Mediterranean ecosystems.
科学分野:
- 環境科学
- リモートセンシング
- 気候変動
背景:
- 干ばつは地中海生態系にとって重大な脅威であり、水資源と農業に影響を与える。
- 効果的な地域計画と適応のためには、干ばつの時空間的ダイナミクスを理解することが不可欠である。
研究 の 目的:
- トルコのチャナッカレ県における2005年から2024年までの包括的な時空間的干ばつ評価を実施すること。
- 2025年から2027年までの干ばつリスク予測モデルを開発すること。
- 水資源管理と気候変動適応戦略に重要な洞察を提供すること。
主な方法:
- Google Earth Engine を介したマルチインデックスリモートセンシングアプローチを利用した。
- 正規化植生指数(NDVI)、地表面温度(LST)、標準化降水量指数(SPI)、土壌水分条件指数(SMCI)を導出した。
- 複数の衛星データソースを統合し、主成分分析を用いて統合干ばつ指数とハイブリッド予測フレームワークを構築した。
主要な成果:
- LSTの年々変動とSPIおよびSMCIの負の傾向を伴う著しい気候変動を明らかにした。
- 植生ダイナミクスと降水パターンの空間的不均一性を特定した。
- 複合干ばつリスクの体系的な上昇を予測し、持続的な中〜高程度の干ばつ脆弱性を示唆した。
結論:
- 本研究は、チャナッカレ県の堅牢な時空間的干ばつ評価とリスク予測を提供する。
- 調査結果は、地中海生態系における干ばつ圧力の増大を強調する。
- 結果は、地域の水管理、農業計画、気候変動適応策の通知に不可欠である。
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