Preliminary Assessment of the Riverine Nitrogen Concentration and Load in an Agroforestry Basin in NW Spain |
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| Authors: | L Serrano L Palleiro M L Rodríguez-Blanco M M Taboada-Castro |
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| Institution: | Center of Advanced Scientific Research (CICA), Faculty of Sciences, University of A Coru?a, A Coru?a, Spain |
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| Abstract: | In this study, the concentrations and loads of different forms of nitrogen nitrate nitrogen (NO3-N), total Kjeldahl nitrogen (TKN), and total nitrogen (TN)] in the headwater catchment of the Mero River (NW Spain) were analyzed. The TN concentrations were relatively low (mean: 2.57 mg L?1). Nitrate was the predominant form of N in the Mero catchment, accounting for 76.65 percent of the TN concentration. Measured NO3-N concentrations were always lower than the maximum allowed drinking water concentration. An annual TN load of 61.2 Mg was computed, representing an export of 0.94 Mg km?2 y?1, whereas annual exports NO3-N and TKN were of 0.79 and 0.15 Mg km?2 y?1, respectively. |
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| Keywords: | Agroforestry basin nitrogen speciation loss NW Spain riverine nitrogen |
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