气候变化领域集成服务门户(CCPortal): Understanding the vulnerability of surface-groundwater interactions to climate change: insights from a Bavarian Forest headwater catchment

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DOI	10.1007/s12665-023-11314-2
	Understanding the vulnerability of surface-groundwater interactions to climate change: insights from a Bavarian Forest headwater catchment
	Munir, Muhammad Usman; Blaurock, Katharina; Frei, Sven
发表日期	2024
ISSN	1866-6280
EISSN	1866-6299
起始页码	83
结束页码	1
卷号	83 期号:1
英文摘要	Headwaters play a crucial role in maintaining forest biodiversity by providing unique habitats and are important for the regulation of water temperature and oxygen levels for downstream river networks. Approximately 90% of the total length of streams globally originate from headwaters and these systems are discussed to be especially vulnerable to impacts of climate change. This study uses an integrated hydrological model (HydroGeoSphere) in combination with 23 downscaled ensemble members from representative concentration pathways (RCPs) 2.6, 4.5 and 8.5 to examine how climate change affects water availability in a headwater catchment under baseflow conditions. The simulations consistently predict increasing water deficits in summer and autumn for both the near (2021-2050) and far future (2071-2099). Annual mean water deficits were estimated to be 4 to 7 times higher than historical levels. This is mainly due to a projected reduction in precipitation inputs of up to - 22%, while AET rates remain similar to those observed during the historical reference period (1992-2018). The declining groundwater storage reserves within the catchment are expected to result in a significant decline in surface water availability during summer and autumn, with a reduction in mean annual stream discharge by up to 34% compared to the reference period. Due to declining groundwater levels, upstream reaches are predicted to become intermittent in summer leading to a reduction of the total stream flow length by up to 200 m. Findings from this study will enhance our understanding of future water availability in headwater systems and may aid in the development of effective management strategies for mitigating local impacts of climate change and preserving these vulnerable ecosystems.
英文关键词	Water availability in headwater catchment; Stream-aquifer interaction; Regional climate model; Integrated hydrological modelling
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:001126496000002
来源期刊	ENVIRONMENTAL EARTH SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/309009
作者单位	University of Bayreuth; Wageningen University & Research
推荐引用方式 GB/T 7714	Munir, Muhammad Usman,Blaurock, Katharina,Frei, Sven. Understanding the vulnerability of surface-groundwater interactions to climate change: insights from a Bavarian Forest headwater catchment[J],2024,83(1).
APA	Munir, Muhammad Usman,Blaurock, Katharina,&Frei, Sven.(2024).Understanding the vulnerability of surface-groundwater interactions to climate change: insights from a Bavarian Forest headwater catchment.ENVIRONMENTAL EARTH SCIENCES,83(1).
MLA	Munir, Muhammad Usman,et al."Understanding the vulnerability of surface-groundwater interactions to climate change: insights from a Bavarian Forest headwater catchment".ENVIRONMENTAL EARTH SCIENCES 83.1(2024).