Dynamics of groundwater drought in the Yellow River source area and its surface influences

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies Pub Date : 2025-06-07 DOI:10.1016/j.ejrh.2025.102512

Huiwu Zhang , Gang Liu , Jing He , Yue Hu

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引用次数: 0

Abstract

Study region

Yellow River source area in China.

Study focus

The primary objective of this study is to investigate the dynamic evolution of groundwater drought events in the source area of the Yellow River over the past two decades. By adopting a three-dimensional perspective, the study aims to characterize and quantify the severity of droughts and analyze their spatiotemporal characteristics. In addition, it explores the seasonal relationships between groundwater drought and key surface factors—elevation, slope, and land use.

New hydrological insights for the region

This study systematically identifies persistent groundwater drought events and their consistent spatial centers, setting it apart from previous research that primarily focused on single indices or short-term trends. The most severe drought event occurred between 2017 and 2018. By incorporating surface factors such as elevation, slope, and land use, and examining their seasonal interactions with drought patterns, the study reveals that high-elevation, steep-slope areas, as well as regions dominated by bare land or grassland, are more vulnerable to groundwater drought, particularly during winter. In contrast, wetlands and water bodies exhibit low and stable drought risk. Unlike prior studies that mainly emphasized macro-level drivers, this research places greater focus on surface conditions influencing groundwater drought. These findings enhance understanding of hydrological mechanisms in fragile plateau regions and help identify high drought-risk areas for targeted management.

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黄河源区地下水干旱动态及其地表影响

研究区域：中国黄河源区。本研究的主要目的是研究近20年来黄河源区地下水干旱事件的动态演变。本研究采用三维视角，对干旱严重程度进行表征和量化，并分析其时空特征。此外，它还探讨了地下水干旱与关键地表因子-高程，坡度和土地利用之间的季节性关系。该研究系统地确定了持续的地下水干旱事件及其一致的空间中心，将其与以往主要关注单一指数或短期趋势的研究区分开来。最严重的干旱事件发生在2017年至2018年之间。通过结合海拔、坡度和土地利用等地表因素，并研究它们与干旱模式的季节性相互作用，该研究表明，高海拔、陡坡地区以及以裸地或草地为主的地区更容易受到地下水干旱的影响，尤其是在冬季。相比之下，湿地和水体的干旱风险较低且稳定。与以往的研究主要强调宏观层面的驱动因素不同，本研究更关注地表条件对地下水干旱的影响。这些发现加强了对脆弱高原地区水文机制的理解，并有助于确定高干旱风险地区进行有针对性的管理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Hydrology-Regional Studies Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)

CiteScore

6.70

自引率

8.50%

发文量

284

审稿时长

60 days

期刊介绍： Journal of Hydrology: Regional Studies publishes original research papers enhancing the science of hydrology and aiming at region-specific problems, past and future conditions, analysis, review and solutions. The journal particularly welcomes research papers that deliver new insights into region-specific hydrological processes and responses to changing conditions, as well as contributions that incorporate interdisciplinarity and translational science.