小規模なインフラと土地利用の変化による意図しない沿岸の変容
Warit Charoenlerkthawin1,2, Chaiyut Charoenphon3, William C Burnett4
1Department of Water Resources Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
Scientific reports
|August 22, 2025
まとめ
バン・クロン・ワン (BKW) 周辺の沿岸開発により,砂浜は泥まみれに変わりました. インフラが堆積物の流れを妨害し 湿地が水産養殖に転換され 泥が増加し 沿岸の変化を引き起こしました
科学分野:
- 沿岸の地形学
- 環境科学
- 海洋科学
背景:
- タイのミッド・湾のバン・クロン・ワン (BKW) の海岸線は,沿岸開発に関連する環境紛争に直面しています.
- 以前の研究では 沿岸部の保護構造が 砂浜の物質の変化を 引き起こすと示唆されていました
研究 の 目的:
- 小規模な沿岸開発がBKWのビーチ素材の変化に与える影響を調査する.
- 砂浜が泥だらけになる 主な要因を特定する
主な方法:
- 岸線の変化分析
- 高解像度LiDAR観測
- ビーチ素材の特徴
- 土地利用の変化の評価
主要な成果:
- 2002年まで海岸線は砂に覆われ,海岸線はほとんど変化しなかった.
- 漁業のモールとハード構造の建設 (2004年-2008年) は,堆積物輸送を妨害し,局所的な砂の蓄積と赤字を引き起こしました.
- 湿地の100ヘクタールの水産養殖への転換により,泥の堆積物が増加し,泥の平地形成に寄与しました.
- 海堤や堤防が海岸線を安定させた一方で 主な要因は砂から泥の堆積物への移行でした
結論:
- 沿岸のインフラストラクチャは 自然な堆積物輸送のダイナミクスを妨害しました
- 土地利用の変更,特に水産物養殖のための湿地の改造,泥の沈殿物の投入が大幅に増加しました.
- インフラ,堆積物処理,土地利用の相互作用を考慮して,統合された沿岸管理は極めて重要です.
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