The models now included in SLU's toolkit for modelling of nutrients in catchment areas can roughly be divided into two types - models for calculating the leaching of nitrogen and phosphorus from agricultural land, and models for the calculation of water balances, transport and turnover of nutrients in rivers and lakes. The former category include the models SOILNDB and ICECREAMDB and the latter FyrisNP and FyrisQ. These models have been fully or partially developed at SLU in various research projects and applied in the context of environmental monitoring and assessment.
SOILNDB and ICECREAMDB are included in a system for calculating the leaching of nutrients from arable land called NLeCCS. The calculation system is used for applications at the national and regional level. One application is ANLeC which calculates the potential for measures against nutrient leaching. Another is calculationo of nutrient reduction in constructed wetlands.
Apart from the models already described do we also use and/or develop the models INCA, PERSiST, SWAT and USPED.