Deriving phosphorus export coefficients for corine land cover types

摘要: Export coefficients for phosphorus (P) have been derived a number of CORINE land cover classes, using data obtained 30 subcatchments two major rivers in Northern Ireland. Multiple regression methods applied, with soluble reactive P (SRP), organic (SOP) and particulate (PP) loads as dependent variables. Arable areal losses were the highest, 2.33 kg SRP ha −1 yr 2.64 PP . Improved non-improved grasslands appear to export equal amounts TP (0.8 ). However, coefficient is greater than improved grasslands, 0.62 0.26 , respectively. This unexpected result may be due undrained compacted nature soils associated which ensures that remains surface layer, limits possibility adsorption down profile encourages runoff. In addition, considerable amount carbon present tends reduce P-binding capacity these soils.