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Effects of ecological engineering on water quality and bacterial community structure in the Second Drainage Ditch in Ningxia
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Kai WANG1, Xiaocong QIU2, Juan YIN1, *, Junlin DONG1
Acta Microbiologica Sinica | 2025, 65(6) : 2590 - 2605
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Acta Microbiologica Sinica | 2025, 65(6): 2590-2605
• Research Article •
Effects of ecological engineering on water quality and bacterial community structure in the Second Drainage Ditch in Ningxia
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Kai WANG1, Xiaocong QIU2, Juan YIN1, *, Junlin DONG1
Affiliations
  • 1.School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, Ningxia, China
  • 2.School of Life Sciences, Ningxia University, Yinchuan, Ningxia, China
Published: 2025-06-04 doi: 10.13343/j.cnki.wsxb.20250092
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[Objective] To study changes of the bacterial community structure in the Second Drainage Ditch in Ningxia after ecological engineering. [Methods] We employed high-throughput sequencing to study the bacterial community structures in water samples. We explored the factors affecting the bacterial community structure by non-metric multidimensional scaling (NMDS) and redundancy analysis (RDA). [Results] From August 2021 to August 2022, the ammonium nitrogen, total nitrogen (TN), permanganate index, dichromate oxidizability (CODCr), and fluoride in the water decreased substantially after the ecological engineering. The dominant bacterial phyla in the water were Proteobacteria, Actinobacteria, Bacteroidetes, and Chloroflexi and the dominant genera included hgcI_clade, SAR11_cladeIII, Limnohabitans, Rhodoferax, and Flavobacterium. The bacterial community structures showed significant differences across different sampling locations. The NMDS results revealed significant variations in the bacterial community structure across different sampling months. The RDA results indicated that total phosphorus (TP), CODCr, and pH were the key factors influencing the bacterial community structure. Notably, TP, CODCr, and TN together explained the largest variance (8.81%) in the bacterial community structure, followed by TP combined with CODCr (-8.05%). [Conclusion] After ecological engineering, the water quality of the Second Drainage Ditch improved, and the bacterial community structure became more diverse. The physicochemical properties of the water strongly influence the distribution and diversity of bacterial communities in the Second Drainage Ditch in Ningxia, which provide a scientific basis for managing the regional water environment.

Second Drainage Ditch  /  bacteria in water  /  ecological engineering  /  community structure characteristics
Kai WANG, Xiaocong QIU, Juan YIN, Junlin DONG. Effects of ecological engineering on water quality and bacterial community structure in the Second Drainage Ditch in Ningxia[J]. Acta Microbiologica Sinica, 2025 , 65 (6) : 2590 -2605 . DOI: 10.13343/j.cnki.wsxb.20250092
Funding
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  • Key Project of the Natural Science Foundation of the Ningxia Hui Autonomous Region(2023AAC02026)
  • First-class Discipline Construction Project for Higher Education Institutions in the Ningxia Hui Autonomous Region (Hydraulic Engineering)(NXYLXK2021A03)
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Year 2025 volume 65 Issue 6
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148
57
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Article Info
doi: 10.13343/j.cnki.wsxb.20250092
  • Receive Date：2025-02-11
  • Online Date：2026-02-07
  • Published：2025-06-04
Article Data
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History
  • Received：2025-02-11
  • Accepted：2025-04-02
Funding
Key Project of the Natural Science Foundation of the Ningxia Hui Autonomous Region(2023AAC02026)
First-class Discipline Construction Project for Higher Education Institutions in the Ningxia Hui Autonomous Region (Hydraulic Engineering)(NXYLXK2021A03)
Affiliations
    1.School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, Ningxia, China
    2.School of Life Sciences, Ningxia University, Yinchuan, Ningxia, China

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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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