黄河流域主要次流域不同人为干扰水平下地表水水质时空演变及其驱动因素

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies Pub Date : 2025-03-27 DOI:10.1016/j.ejrh.2025.102327

Longmei Xie , Ruizhong Gao , Xixi Wang , Limin Duan , Lijing Fang , Hui Tong , Chang Yue , Tingxi Liu

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引用次数: 0

摘要

研究区域选择黄河流域的一个子流域——大黑河流域作为研究对象。它涵盖了内蒙古的人口中心和村庄，支持重要的生态系统，并强调需要解决其在水管理和保护方面的独特挑战。本研究考察了大黑河流域的地表水质量动态，这是可持续水管理的一个关键方面。预测时空变化和驱动因素仍然具有挑战性。利用2013-2023年的水质、水文和气象数据集，应用综合污染指数（CPI）、方差分析（ANOVA）和广义相加模型为有效管理提供见解。该研究确定了大黑河流域的三个水质阶段：恶化（2013-2015）、改善（2016-2020）和稳定（2021-2023）。季节变化表明，丰水期水质较好，TN、NH4+-N、TP、DO、CPI较低。由于径流、工业污染和污水的影响，平原和城市地区的空间变异性最大，而丘陵地区由于人为影响较小，变化最小。降水和泥沙动态影响了丘陵地区的水质，大径流事件加剧了污染。解决方案包括去除沉积物，加强丘陵地区的植被，以及在降雨和干旱季节进行污染物管理。

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查看原文本刊更多论文

Spatiotemporal evolution of surface water quality and driving factors across varying levels of human interference in a major subbasin of the Yellow River Basin, China

Study region

The Dahei River Basin, a sub-basin of the Yellow River Basin, was selected for this study. Encompassing population centers and villages in Inner Mongolia, it supports vital ecosystems and underscores the need to address its unique challenges in water management and protection.

Study focus

This study examines surface water quality dynamics in the Dahei River Basin, a key aspect of sustainable water management. Predicting spatiotemporal variations and driving factors remains challenging. Using 2013–2023 datasets on water quality, hydrology, and meteorology, the composite pollution index (CPI), ANOVA, and generalized additive models were applied to provide insights for effective management.

New hydrological insights for the region

The study identified three water quality phases in the Dahei River Basin: deterioration (2013–2015), improvement (2016–2020), and stabilization (2021–2023). Seasonal variations showed better water quality (lower TN, NH₄⁺-N, TP, DO, CPI) in wet seasons. Spatial variability was highest in plains and urban areas, driven by runoff, industrial pollution, and sewage, while hilly areas showed minimal variation due to low human impact. Precipitation and sediment dynamics affected water quality in hilly areas, with large runoff events worsening contamination. Solutions include sediment removal, vegetation enhancement in hilly areas, and pollutant management during rainfall and dry seasons.

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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.