仿刺参夏眠前后池塘沉积物—水界面氮、磷通量研究

doi:10.16378/j.cnki.1003-1111.20260

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Abstract In order to study the fluxes of N and P in sediment-water surface in aquaculture pond, the concentrations of NO₂^-, NO₃^-, NH₄⁺ and DIP in sea water of sediment-water surface samples were detected and analyzed, during the aestivation of sea cucumber Apostichopus japonicus from the June to the October. The results were found that the fluxes of NO_x^--N in sediment-water surface had a special change of firstly then ascend in the sea cucumber aquaculture pond, from the June to October, the minimum value was -(66.12±7.66) mg/(m²·d) in the August. The fluxes of NH₄⁺-N in sediment-water surface were increased, then decreased and then increased, the maximum value was (6.21±0.55) mg/(m²·d) in the July, the minimum value was -(14.88±1.44) mg/(m²·d) in the September. The fluxes of DIP in sediment-water surface were increased firstly, then decreased, the maximum value was (4.20±0.56) mg/(m²·d) in the August, the minimum value was -(3.48±0.43) mg/(m²·d) in the October. The relevance analysis showed that the DIP fluxes were significantly positively correlated to sea water temperature, and negatively to the DIP concentrations in sea water. The NO_x^--N fluxes were significantly positively correlated to the concentrations of NO_x^- in sea water. These results showed that there were the nitrogen sequestration and phosphorus release of the sediment, regulated the content of N and P in water, in aquaculture pond during the aestivation of sea cucumber from the June to the October. The findings would provide scientific basis for the further study of ecological health cultivation and environment control in sea cucumber aquaculture pond.

Key words： Apostichopus japonicus sediment-water interface fluxes of nutrient aestivation

Received: 10 November 2020

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	WANG Bai
	GAO Shan
	ZHOU Zunchun

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WANG Bai,GAO Shan,ZHOU Zunchun. Changes of N and P Fluxes in Sediment-Water Surface in Aquaculture Pond during Aestivation of Sea Cucumber Apostichopus japonicus[J]. Fisheries Science, 2021, 40(2): 239-243.

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https://www.shchkx.com/EN/10.16378/j.cnki.1003-1111.20260 OR https://www.shchkx.com/EN/Y2021/V40/I2/239

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