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Nutrient removal effect of plant+microbial combined ecological ditch under salinity stress
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Wen-huan YANG1, 2, Yao-hua PENG1, 2, Yan XU1, 2, Zhi YAO1, 2, Le-le WANG3, Wei-ping LI1, 2, *
China Environmental Science | 2025, 45(1) : 430 - 439
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China Environmental Science | 2025, 45(1): 430-439
• Environmental Ecology •
Nutrient removal effect of plant+microbial combined ecological ditch under salinity stress
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Wen-huan YANG1, 2, Yao-hua PENG1, 2, Yan XU1, 2, Zhi YAO1, 2, Le-le WANG3, Wei-ping LI1, 2, *
Affiliations
  • 1.School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, Inner MongoliaInner Mongolia, China
  • 2.Collaborative Innovation Center of Inner Mongolia Autonomous Region for Ecological Protection and Comprehensive Utilization of the Yellow River Basin, Baotou 014010, Inner MongoliaInner Mongolia, China
  • 3.Service Center of Daihai Nature Reserve, Liangcheng County, Ulanqab 013750, Inner MongoliaInner Mongolia, China
Published: 2025-01-20
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To efficiently remove nutrient salts in high salinity lakes, this study implemented a plant+microbial ditch at Daihai Lake. The nutrient removal efficiency, plant growth, and microbial community dynamics of this ecological ditch was investigated across different salinity gradients. Immobilizing Bacillus amyloliquefaciens on polyurethane sponge within the ditch could significantly promote the growth of plant, enhance the activity of antioxidant stress-related enzymes, and strengthen the ability of plants to absorb and assimilate nutrients. Addiing Bacillus amyloliquefaciens in the ditch could not make it become the absolute dominant genus. but it could improve the microbial community structure, increase the abundance of functional microorganisms involved in nitrogen and phosphorus removal, and enhance the water purification capacity of the ditch. Compared to ecological ditches with plant-only or microorganism-only, the integrated ecological ditch could achieve higher nutrient removal rates across different salinity concentrations. Specifically, over 70% TN, NH4+-N, TP, and CODCr could be removed in the integrated ditch at 15g/L salinity. Compared plant-only ditch, the activities of superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) in plants were increased 33.7%, 43.6%, and 38.7%, respectively, in planted+microbial ditch at 15.0g/L salinity.

Bacillus amyloides  /  biological ditch  /  salinity stress  /  antioxidant stress enzymes
Wen-huan YANG, Yao-hua PENG, Yan XU, Zhi YAO, Le-le WANG, Wei-ping LI. Nutrient removal effect of plant+microbial combined ecological ditch under salinity stress[J]. China Environmental Science, 2025 , 45 (1) : 430 -439 .
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Article Info
  • Receive Date：2024-06-06
  • Online Date：2026-03-18
  • Published：2025-01-20
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  • Received：2024-06-06
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Affiliations
    1.School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, Inner MongoliaInner Mongolia, China
    2.Collaborative Innovation Center of Inner Mongolia Autonomous Region for Ecological Protection and Comprehensive Utilization of the Yellow River Basin, Baotou 014010, Inner MongoliaInner Mongolia, China
    3.Service Center of Daihai Nature Reserve, Liangcheng County, Ulanqab 013750, Inner MongoliaInner Mongolia, 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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