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滝川水力発電所建設がヤロン川流域の沿岸植生に及ぼす影響
Yacun Yang1, Yingjun Xu1, Nan Wang1
1State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, China.
Environmental monitoring and assessment
|August 27, 2025
まとめ
ヤロン川流域のカスケード水力発電ダム建設は,沿岸の植生を大幅に促進しました. 水力発電の発展がこれらのポジティブな変化の主な原動力として特定され,植生のための条件を向上させました.
科学分野:
- 環境科学
- 水学
- エコロジー
背景:
- ヤロン川流域は,上流の長江川の重要な生態学的障壁である.
- 水力発電の発展は中国の"西から東への電力伝送"戦略の核心です.
研究 の 目的:
- カスケード水力発電所 (CHD) の建設が沿岸植生 (RV) の動態に与える影響を定量化する.
- RVの変化と気候要因 (降水量,土壌の湿度,温度,VPD) の関係を分析する.
主な方法:
- 多源遠隔検知と気象データを活用した (2000-2022年).
- 統合された部分相関分析,構造方程式モデリング (SEM),および一般化された線形モデル (GLM).
主要な成果:
- 岸辺の植生は,CHD後の著しい増加傾向を示した (平均NDVIは0.0007年−1増加した).
- ダム作業は微小気候効果を生じさせ,降雨量を増やし,土壌の湿度を増やし,気温/VPDを低下させ,植物の成長を促した.
- SEMは水力発電の発展が植生の変化の主な原動力であり,気候要因が間接的に影響していることを確認しました.
結論:
- 水力発電の開発は,ヤロン川流域の岸辺の植生を大幅に高めています.
- 持続可能な生態系の健康と潜在的な悪影響を軽減するために,長期的な生態学的モニタリングと適応的な管理が不可欠です.
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