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最近的雪水储存变化及其对山高山盆地河流变化的影响
Tingting Ning1, Linshan Yang1, Zongxing Li1
1Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; Qilian Mountains Eco-environment Research Center in Gansu Province, Lanzhou, 730000, China.
Journal of environmental management
|April 6, 2025
概括
气候变化影响了山上积雪的储存. 改进的雪积分指数 (SSI) 显示,山西部盆地增加了雪积水储量,而东部盆地减弱,影响了溪流流动.
科学领域:
- 水文学的水文学
- 气候学 气候学 气候学
- 环境科学 环境科学
背景情况:
- 气候变化显著改变了高山积雪储存能力.
- 现有的积雪量指数 (SSI) 需要对降水峰值特征进行细化.
- 对于SSI变化对水文分区的影响尚不清楚.
研究的目的:
- 改进SSI指标以更好地表示降水峰值.
- 分析山雪水储量的近期变化.
- 用Budyko框架量化积雪储存变化对溪流的影响.
主要方法:
- 改进了SSI指标,使用了更正的阴影状函数.
- 分析了中国山22个盆地.
- 应用布迪科框架来评估水文分区.
主要成果:
- 雪水的储存能力在西基兰盆地比东部更大.
- 西部盆地显示增强的SSI,有显著的上升趋势 (p < 0.05).
- 东部盆地表现出较弱的积雪能力.
- 在22个流域中,SSI变化对15个流域的流量有积极的影响 (平均29%).
结论:
- 改进的SSI指标准确地反映了雪水储存动态.
- 积雪的变化对依赖积雪的地区的水文反应有很大影响.
- 调查结果有助于评估雪水储存及其水文效应.
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