使用稳定的水同位素评估城市水生基于自然的解决方案对水气候变化的敏感性
Maria Magdalena Warter1, Chris Soulsby2,3, Kati Vierikko4
1Department of Ecohydrology and Biogeochemistry, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany. maria.warter@igb-berlin.de.
Environmental monitoring and assessment
|December 6, 2025
概括
城市蓝色基础设施 (aquaNBS) 的功能是复杂的. 稳定的水同位素揭示了池对气候变化敏感,而溪流由于更长的水过渡时间而表现出更大的弹性.
科学领域:
- 环境科学 环境科学
- 水文学的水文学
- 城市生态城市生态学
背景情况:
- 城市蓝色基础设施 (aquaNBS) 是以自然为基础的解决方案,解决城市水资源挑战.
- 由于气候变化和城市复杂性,评估aquaNBS的水文功能是很困难的.
- 了解水气候影响是aquaNBS适应的关键.
研究的目的:
- 为了确定影响aquaNBS功能的主导物理过程和水气候因素.
- 评估不同类型的aquaNBS对水气候变化的敏感性.
- 评估稳定水同位素对特征水文学的有用性.
主要方法:
- 在四个欧洲城市 (波兹南,柏林,安特卫普,里斯本) 一年 (2023/2024) 进行稳定水同位素的季节性采样.
- 使用同位素特征分析水源,流动路径和年龄代理 (痕迹缩,年轻水分) 的分析.
- 来自不同类型的aquaNBS (溪流,池) 和时间采样频率的同位素数据的比较分析.
主要成果:
- 稳定的水同位素揭示了当地强烈的水气候影响和aquaNBS中的不同水源贡献.
- 池对水气候变化的敏感性更高,具有显著的季节性变化和年轻水分.
- 河流表现出更大的水源混合和更长的运输时间,这表明它们对水气候变化的弹性更高.
- 具有广泛空间覆盖的季节性采样提供了aquaNBS的有价值的水文特征.
结论:
- 当地水气候极大地影响了aquaNBS的水文结构,池比溪流更容易受到变化的影响.
- 稳定的水同位素是了解aquaNBS功能和弹性的有效工具.
- 战略性的,即使是粗的,时间采样与广泛的空间覆盖相结合,可以充分描述aquaNBS水文学的适应规划.
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