Journal of East China Normal University(Natural Science) >

2024 , Vol. 2024 >Issue 1: 58 - 67

DOI: https://doi.org/10.3969/j.issn.1000-5641.2024.01.007

Application of Ecological Purification Technology on Wetland

Study on ecological purification system of tidal-flow paddy wetland based on multifunctional coupling

  • Hongshuo ZOU ,
  • Min FU ,
  • Mengdie XIAO ,
  • Shiwen SHENG ,
  • Ping XU ,
  • Xuechu CHEN
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  • School of Ecological and Environmental Sciences, East China Normal University, Shanghai　200241, China

Received date: 2023-03-20

  Accepted date: 2023-06-24

  Online published: 2024-01-23

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Abstract

In this study, a pilot-scale tidal-flow paddy wetland system based on multifunctional coupling was constructed to treat land-based aquaculture tailwater of Macrobrachium rosenbergii. This study explored the purification ability, CH4 emissions, arthropod diversity, and comprehensive benefits of the tidal-flow paddy wetland system to provide a scientific basis for the application of this system. The results showed that the tidal-flow paddy wetland system could effectively purify land-based aquaculture tailwater. The removal capacities of dissolved inorganic nitrogen, total nitrogen, dissolved inorganic phosphorus, and total phosphorus were approximately 54.3%, 44.9%, 42.9%, and 43.0%, respectively. Simultaneously, the system had no negative impact on the external environment and indirectly purifies river water. Compared with conventional paddy fields, the tidal-flow paddy wetland system reduced CO2 and CH4 emissions by 5.4% and 92.5%, respectively. Compared to conventional paddy fields during the flooding period, the abundance of the mcrA gene in the tidal-flow paddy wetland decreased by 82.3%. Moreover, the tidal-flow paddy wetland system improved biodiversity and natural enemy abundance/pest abundance, inhibited pest outbreaks, supported more species, and increased comprehensive benefits compared to the control.

Key words： tidal-flow; paddy wetland; greenhouse gas; arthropod diversity; water purification

Cite this article

Hongshuo ZOU , Min FU , Mengdie XIAO , Shiwen SHENG , Ping XU , Xuechu CHEN . Study on ecological purification system of tidal-flow paddy wetland based on multifunctional coupling[J]. Journal of East China Normal University(Natural Science), 2024 , 2024(1) : 58 -67 . DOI: 10.3969/j.issn.1000-5641.2024.01.007

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