AHPと地理的アプローチを用いた中央インドの亜熱帯地域の土壌浸食の空間モデリング
Ashwini Suryawanshi1, Gangalakunta P Obi Reddy2, Nirmal Kumar3
1ICAR - Research Complex for NEH Region, Arunachal Pradesh Centre, Basar, 791101, India.
Environmental monitoring and assessment
|August 28, 2025
まとめ
土地の侵食が加速し 中央インドの農業を脅かしています この研究では,RUSLEとGISを使用して侵食リスクのマッピングを行い,クダリ流域の29%が深刻な影響を受けていることを特定し,土壌保全の標的となる措置のためにサブ流域2を優先しました.
科学分野:
- 環境科学
- 農業科学
- 地理空間分析
背景:
- サブ熱帯地域の持続可能な農業生産性は,土壌浸食によって脅かされています.
- 中央インドのマダヤ・プラデシュ州は 土地の喪失により 農業セクターに大きなリスクに直面しています
研究 の 目的:
- マジヤ・プラデシュのクダリ流域の土壌浸食リスクを評価し,空間的にモデル化する.
- 土壌浸食管理の優先分野を特定し,持続可能な農業慣行を確保する.
主な方法:
- 改訂された普遍的な土壌損失方程式 (RUSLE) は,地理情報システム (GIS) 環境内で適用されました.
- 多基準評価 (MCE) と分析階層プロセス (AHP) は,空間モデリングに使用され,侵食に影響を与える要因に重み付けの重要性を割り当てました.
- 通常の最小二乗 (OLS) の回帰と高解像度の画像は,検証と予測の精度のために使用されました.
主要な成果:
- 流域の約29.09%は深刻なから極めて深刻な侵食と分類されています.
- トポグラフィは,土壌浸食に影響を与える最も支配的な要因として特定されました.
- 準流域2 (SW-2) は,即時侵食管理の介入を必要とする最優先地域として特定されました.
結論:
- GISベースのRUSLE,AHP,OLS回帰は,土壌浸食リスクゾーンをマッピングするための効果的なツールです.
- SW-2のような高リスク地域における土壌と水の保全は 持続可能な農業にとって不可欠です
- コントールの農業,チェックダム,植林などの実施措置は,土壌浸食の危険を軽減することができます.
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