The role of catchment characteristics in determining surface water nitrogen in four upland regions in the UK

摘要: Abstract. Hydrochemical and catchment data from 80 upland moorland sites in four regions with contrasting climate, soils, geology geomorphology have been analysed to assess the key attributes that influence enhanced leaching of soluble nitrogen surface waters. The are South Pennines northern England, Snowdonia National Park north Wales, Galloway region south-west Scotland Mourne Mountains Northern Ireland, all highly acidified, median pH values