| 引用本文: | 褚继菊,蒋亚军,褚继花,等.内陆河沙漠型水库水质变异特性分析
——以红崖山水库为例[J].灌溉排水学报,2025,44(12):120-126. |
| CHU Jiju,JIANG Yajun,CHU Jihua,et al.内陆河沙漠型水库水质变异特性分析
——以红崖山水库为例[J].灌溉排水学报,2025,44(12):120-126. |
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| 摘要: |
| 【目的】红崖山水库位于中国西北部石羊河流域下游，是重要的区域水源。然而，在气候变化和人类活动的影响下，其水环境发生了变化。本研究系统分析了红崖山水库水质的变化情况。【方法】基于2002—2022年红崖山水库水质监测数据，采用描述性统计分析和趋势检测方法，考察了水质的动态变化和主要污染物浓度（包括氨氮、五日生化需氧量（BOD5）、化学需氧量（COD）和总磷（TP））的年际变化。依据《地表水环境质量标准（GB 3838—2002）》对水库水质进行分类。【结果】①水库水质的年际变化较为稳定，水化学以C类CaⅡ型为主。2002—2022年，氯离子、矿化度、总硬度和总碱度均呈显著上升趋势（p＜0.05）。②2016年以前，水库的主要污染物为氨氮、BOD2和COD。2016年以后，这些污染物质量浓度显著下降，水质持续改善。③研究期间，总磷质量浓度一直处于较高水平，未出现下降趋势。【结论】2002—2022年，红崖山水库水质因有效的点源污染控制而得到改善。然而，总磷和水体盐度仍然偏高，亟需加强农业面源污染治理，并优化水库调度以减少这些污染物的入库量。 |
| 关键词: 红崖山水库；因子分析；水质变异特征 |
| DOI：10.13522/j.cnki.ggps.2025157 |
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| Variation in water quality of the Hongyashan Reservoir |
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CHU Jiju, JIANG Yajun, CHU Jihua, ZHOU Weida
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Gansu Province Wuwei Hydrology and Water Resources Survey Center, Wuwei 733000, China
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| Abstract: |
| 【Objective】Hongyashan Reservoir, located in the lower reaches of the Shiyang River Basin in Northwestern China, is a critical regional water source. However, its water environment has changed under the influence of climate change and human activities. This study systematically analyses the variation in water quality of the reservoir. 【Method】The analysis was based on water quality data measured from 2002 to 2022 in the reservoir. Descriptive statistical analysis and trend detection methods were used to examine ① temporal dynamics of water quality indicators; ② inter-annual variation in concentrations of major pollutant concentrations, including ammonia nitrogen, five-day biochemical oxygen demand (BOD5), chemical oxygen demand (COD), and total phosphorus (TP). Reservoir water quality was classified based on the ‘Surface Water Environmental Quality Standard (GB 3838-2002) of China’. 【Result】① The inter-annual variation in the reservoir water quality was stable, with water chemistry dominated by Class C Ca Group II. However, chloride, mineralization, total hardness and total alkalinity all showed a significant increase (p＜0.05) from 2002 to 2022. ② Prior to 2016, the dominant pollutants in the reservoir were ammonia nitrogen, BOD2, and COD. Since 2016, these concentrations have decreased significantly, and water quality has improved sustainably. ③ In the study period, total phosphorus remained high, with no sign of decline. 【Conclusion】From 2002 to 2022, the water quality of Hongyashan Reservoir improved due to effective point source pollution control. Nevertheless, TP and water salinity remain high, and it is imperative to strengthen agricultural pollution management and optimize reservoir operation to reduce inflow of these pollutants. |
| Key words: Hongyashan Reservoir; factor analysis; characteristics of water quality variation |
