機械学習を用いた空間的都市化と都市ヒートアイランドの関係性の理解:景観ベースの空間的フレームワーク
Manob Das1, Arijit Das2, Ashis Mandal2
1Department of Geography, Ramananda College, Bishnupur, West Bengal, India. dasmanob631@gmail.com.
Environmental science and pollution research international
|December 12, 2025
まとめ
都市化は、コルカタにおける不浸透性表面と地表の都市ヒートアイランド(SUHI)強度を著しく増加させた。空間的都市化はSUHIと正の相関があり、持続可能な都市計画と緑のインフラの必要性を強調している。
科学分野:
- 環境科学; 都市計画; リモートセンシング
背景:
- 都市化は、重要な環境問題である都市ヒートアイランド(UHI)効果を促進します。; 都市拡大とUHIの関係を理解することは、都市計画にとって不可欠です。
研究 の 目的:
- 機械学習を用いてコルカタ都市圏(KMA)における都市化と地表の都市ヒートアイランド(SUHI)の関係を分析すること。; 空間的都市化指数(SUI)を開発し、SUHIとの相関を評価すること。
主な方法:
- 空間的都市化指数(SUI)を開発し、空間的景観指標を利用しました。; 都市・農村勾配(URG)に沿った地表面温度(LST)を分析するために、空間的勾配アプローチを採用しました。; 主要な都市化とSUHIの要因を決定するために、相関、回帰、およびランダムフォレスト(RF)モデルを適用しました。
主要な成果:
- 不浸透性表面(IS)は2000年から2020年の間に128%増加し、SUHI強度が非常に高い地域はそれぞれ287%、207%増加しました。; 建築面積(AREA_AM)が空間的都市化の主な要因であり、最大のパッチ指数(LPI)がSUHIに最も影響を与えました。; 空間的都市化はSUHI強度と有意な正の相関を示しました。
結論:
- 都市拡大はSUHI効果を直接悪化させるため、緊急の持続可能な都市計画が必要です。; UHIを緩和し、都市の熱環境を改善するためには、緑地と水域のインフラを統合することが不可欠です。
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