Characteristics and Variation of Water Quality During Dry Season in Yudong Reservoir of Zhaotong District in Yunnan Province

梁兰唯; 孙雯雯; 王倩; 熊永英; 黄梅; 付宋捷; 陈雪梅; 刘潇涵; 焦阳; 顾森; 颜诚; 李清曼

doi:10.19672/j.cnki.1003-6504.0838.23.338

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Characteristics and Variation of Water Quality During Dry Season in Yudong Reservoir of Zhaotong District in Yunnan Province

更新时间：2026-11-05

- Characteristics and Variation of Water Quality During Dry Season in Yudong Reservoir of Zhaotong District in Yunnan Province
- Vol. 47, Issue S1, Pages: 198-206(2024)
- 作者机构：
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- DOI：10.19672/j.cnki.1003-6504.0838.23.338
  CLC： X524
- Published：2024
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梁兰唯, 孙雯雯, 王倩, et al. Characteristics and Variation of Water Quality During Dry Season in Yudong Reservoir of Zhaotong District in Yunnan Province[J]. 2024, 47(S1): 198-206.
DOI：

梁兰唯, 孙雯雯, 王倩, et al. Characteristics and Variation of Water Quality During Dry Season in Yudong Reservoir of Zhaotong District in Yunnan Province[J]. 2024, 47(S1): 198-206. DOI： 10.19672/j.cnki.1003-6504.0838.23.338.

摘要

云南昭通渔洞水库集城市供水、农业灌溉、防洪、发电、渔业等功能，了解其枯水期水质及变化对指导水力调度，保障水库水质和水量稳定具有重要的科学意义。该文通过在库区不同水域布设30个监测点，在1月和5月对水库表层、中层和底层水样进行采集，分析了水质主要理化参数和营养物浓度，并利用综合指数法对水质进行了评价。结果表明：从1月到5月，水库水温、电导率和pH显著升高（P0.05），但表层水透明度显著地下降（P0.05）。平均COD从(8.21±3.10) mg/L降至(7.68±2.26) mg/L。水域和水层不同，COD各异，但总体上差异不明显（P0.05）。1月份水库平均TN为(2.65±0.35) mg/L，其中NO_3~--N占约90%

NH_3-N仅1.5%，平均值则主库区显著低于库湾（P0.05）；而到了5月份，平均TN为(0.96±0.12) mg/L

NO_3~--N占约74%

NH_3-N仅6.7%，且底层显著高于表层（P0.05）。水库TDP和SRP在1月份分别为(4.92±1.36)μg/L和(2.25±1.89)μg/L，且水域不同，它们的含量各异；到了5月份，则分别上升至(11.6±11.0)μg/L和(6.72±9.38)μg/L。综合指数评价结果说明，渔洞水库在1月为Ⅲ类水质，但到了5月上升至Ⅱ类，表明渔洞水库在枯水期具有较强的自净能力。枯水期渔洞水库的自净能力可能与硅藻生长有关。水柱中溶解硅较高，水温升高利于硅藻生长，从而消耗了水柱中的NO_3~--N和溶解硅，水质得到了提升。

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