西北中国のシハンシュイ盆地における水資源の保存能力と影響要因の時空的変動
Na-Na Chen1, Yu-Fei Cheng1, Jun-de Wang1
1Gansu Academy for Water Conservancy, Lanzhou 730000, China.
Ying yong sheng tai xue bao = The journal of applied ecology
|August 31, 2025
まとめ
土地利用と気候要因によってシハンシュイ盆地における水資源の保存は1990年から2020年にかけて増加した. 将来の水資源の保存は降水量の減少によって制限され,生態学的土地転換の必要性を強調しています.
科学分野:
- 環境科学
- 水学
- エコロジー
背景:
- 水資源の保存は,山岳地域や流域の生態的回復と水資源管理に不可欠です.
- 効率的な地域計画には,時空的な水資源の保存パターンとその要因を理解することが不可欠です.
研究 の 目的:
- 西山水盆地における水資源の空間的・時間的変動を分析する.
- 水資源の保存,気候,人間の活動との関連を調査する.
- シナリオシミュレーションとジオ検出器モデリングを使用して,水資源の保存に影響を与える要因を探求する.
主な方法:
- InVESTモデルの水生産モジュールを利用して,水資源の節約を評価した.
- 変数間の関係を分析するためにピアーソンの相関係数を用いる.
- 応用シナリオシミュレーションとジオ検出器モデリングで,水資源の保全の主要な要因を特定する.
主要な成果:
- シハンシュイ盆地の水資源は1990年から2020年まで上昇傾向を示し,平均38.35mmでした.
- 地域分布は北西と南東では高い値,北東では低い値,山岳地域では丘陵地域よりも高い値を示した.
- 降水量と水量保存は減少して増加するパターンをたどり,降水量と潜在的蒸気流出は,水量保存と有意な相関関係を示した.
結論:
- 森林,草原,耕地は水資源の保存に大きく貢献しています (>60%).
- 駆動因子,特に土地利用と潜在的蒸発/NDVIの間の相互作用は,単一の因子よりも大きな説明力を持っています.
- 将来の気候変動,特に降水量の減少は,水資源の保存に脅威をもたらし,未使用の土地を生態学的タイプに変換することで,環境を改善することができます.
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