Dataset of Riverine Nitrogen and Phosphorus Fluxes to the Coastal Zone of Fujian Province, China (2010-2024)

Subsequently, monthly fluxes are obtained by multiplying the measured concentrations by the adjusted discharge. For bimonthly monitoring sites, missing monthly concentrations are interpolated using the arithmetic mean of concentrations from the preceding and following months. Annual fluxes are derived by summing the monthly fluxes of the corresponding twelve months, while the annual watershed nutrient yield is obtained by dividing this annual flux by the watershed area.

This dataset offers a comprehensive characterization of the nutrient fluxes transported from the freshwater reaches of the rivers to the estuarine zones. As a vital foundational resource for integrated watershed - coastal research, it supports the assessment of riverine nutrient loads to the coastal sea, the analysis of marine water quality, and the formulation of land - sea coordinated management strategies.