Assessing the Capacity of Mangroves to Remove Nitrogen and Phosphorus from Coastal Shrimp Farms in Kim Son District, Ninh Binh Province

Among the ecosystem services provided by mangrove forests, there are environmental cleaning services based on their ability to adsorb and accumulate pollutants in sediment layers as well as adsorbtion and sequestration by forest plants. In order to estimate the ability of mangrove forests to remove nitrogen (N) and phosphorus (P) from shrimp wastewater in Kim Son district, Ninh Binh province, this study conducted some laboratory analyses to confirm the NH4+ and PO43- adsorption capacity of soil and estimated the monetary value of the mangrove forests based on the emission coeficients from the farming of black tiger shrimp, white leg shrimp and the biomass incorporation coeficients of N and P by mangrove forests. Based on the amount of wastewater generated and corresponding content of N and P to be treated, the monetary values derived from the N and P removal capacity of  the mangrove forests in Kim Son district are estimated using the cost of similar treatment investment provided by other service providers. According to calculations, the amount pollutant load from shrimp farming in the coastal area of Kim Son district in 2023 is 36,953,064 kg of N, 7,550,382 kg of P and 4,576,894.86 m3 of wastewater. The estimated results for ​​719 hectares of mangrove forests in Kim Son district in 2023 show that this area of the forests is fully capable of removing 100% of N and P found in wastewater discharged from shrimp farming activities. The value of environmental cleaning services through the ability to sequester N and P in shrimp farming wastewater of Kim Son mangrove forest is equivalent to about 16,019 billion VND/year..

• Publication year

  2025

• Venue

  VNU Journal of Science Earth and Environmental Sciences

• Publication date

  2025-05-15

• Fields of study

  Not labeled

• Identifiers
  DOI 10.25073/2588-1094/vnuees.5271
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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