Farm Types As An Alternative To Detailed
Models In Evaluation Of Agricultural
Practise In A Certain Area
Author(s)
I. T. Kristensen & I. S. Kristensen
Abstract
Agriculture has a significant impact on the environment in Denmark due to
nutrient emissions. To reduce the impact, it is necessary to have improved
nutrient management both at national and regional scales. Our knowledge about
important model parameters to describe nutrient balances has increased, but at a
local level there is often a lack of the necessary data. Therefore, the Danish
Institute of Agricultural Sciences has tried to find alternative data sources to
describe nutrient management. One approach is to use data from databases of
land and fertiliser use (e.g. registers established to support the administration of
the EU Community agricultural support) combined with very detailed knowledge
about a limited number of farms from a random sample of farm accounts and
study farms.
A typology based on main production and stock density is established from a
set of representative data sets. Models of production and nutrient flows for each
farm type are developed based on detailed information from case studies etc.
Based on register data (including geo-references for each farm), the farms are
classified according to the typology and the total N-surplus in the region is
estimated based on the amount of areas within each farm type.
The first test of the method has been on a regional scale in a vulnerable
watershed. The preliminary results look promising and the work is now
extending the model to analyse possible improvements in selected farm type
factors on e.g. nutrient loss in the watershed.
Keywords
Related Book
Other papers in this volume
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