About our models

Last changed: 16 September 2016
_V8F6665web.jpg

The models now included in SLU's toolkit for modeling 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.

What questions should be answered? What data are available? Is the area of concern a small scale (part of a field), national or something in-between? Different models fit different applications and thus we are working with many different models.

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 FyrisNPFyrisQ and FyrisCOST. 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 (Nutrient leaching coefficient calculation system). The calculation system is used for applications at the national level for the Environmental Protection Agency and the National Board of Agriculture and at the regional level for the County Administrative Boards. One application is the buffer zone database FyrisSKZ. FyrisNP and FyrisQ have so far primarily been used in various assignments at the regional level.

In the context of the consortium SMED SLU participates in the development of the Technical Calculation System Water (TBV). The system includes the storage of background data and results on nitrogen and phosphorus load of water and transport to the sea. The system is used for reporting to HELCOM and OSPAR, follow up of environmental goals and in the future also for the Water authorities.

Apart from the models already described do we also use and/or develop the models INCA, PERSiST, SWE-model, SWAT och USPED


Contact