Modelling nitrate river water quality for policy support

摘要: Abstract In response to the need for nitrate policy support in UK, ADAS UK Ltd. has developed EveNFlow modelling tool. is conceptually based and allows surface subsurface pathways multiple diffuse sources, associated with different soil‐crop‐livestock combinations. Sources of losses from agricultural non‐agricultural land, urban areas point sources are all represented. The output provides information form daily time‐series at any along catchment river network, base soil profile exported loads key vectors, e.g. livestock arable land. order model N losses, wide GIS datasets activity, climate type used. builds on existing models, either through their coupling or metamodels. These component models include: SLIMMER; a simple functional loss model; crop water use/drainage elements MORECS IRRIGUIDE mode...