Factors influencing nitrogen inputs and outputs in two Scottish upland catchments |
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| Authors: | A.C. Edwards J. Creasey M.S. Cresser |
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| Affiliation: | Department of Soil Science, University of Aberdeen, Old Aberdeen AB9 2UE. |
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| Abstract: | Abstract. The factors influencing inorganic nitrogen inputs in wet deposition in two upland catchments in northeast Scotland are discussed. Seasonal trends in nitrate-nitrogen concentrations in water draining from the catchments, and in monthly nitrate-nitrogen outputs, are reported and explained. The inputs in rain exceeded the output in the rivers in the two catchments by 3.9–9.4 kg ha−1a−1. Retention by vegetation probably plays a crucial role in nitrogen cycling in the uplands. |
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