Environmental benefits and social costs - An example of combining Bayesian networks and economic models for analysing pesticide management instruments

Hans Jørgen Henriksen, Jeanne Kjær, Walter Brüsch

Publikation: Bidrag til bog/rapport/konferenceproceedingsKonferenceartikel i proceedings

Abstrakt

Bayesian networks (Bn) are efficient tools for integrating different domain models, knowledge bases and data (e.g. economic, social, biological and hydrological domains) in a transparant, coherent and equitable way. The paper reports on the construction of a Bn to assess impacts of pesticide management instruments on groundwater and drinking water quality. Within the Bn agricultural management data, groundwater monitoring data and expert knowledge were combined in a focused dialogue among domain experts with outputs from socio-economic models. The instruments analysed were taxes on pesticides, pesticide-free buffer zones around field edges and water boreholes, and an increase in the proportion of organic farming (subsidies). The analysis showed that pesticide-free buffer zones around field margins and water boreholes are recommended. Bns indicates that benefits with respect to biodiversity and ground water quality exceed the social consts of the reduced agricultural productivity. However, a tax on herbicides (i.e. on weed killers) is the most effective instrument with respect to protection of the groundwater resource, including groundwater reserves not currently utilised for drinking water.
OriginalsprogEngelsk
TitelNordic Water 2006. Experiences and challenges in implementation of the EU Water Framework Directive
RedaktørerJens Christian Refsgaard, Anker Lajer Højberg
ForlagNordic Association for Hydrology
Sider251-260
Antal sider10
ISBN (Trykt)87-87656-11-6
StatusUdgivet - 2006
BegivenhedXXIV Nordic Hydrological Conference. NORDIC WATER 2006. : Experiences and Challenges in Implementation of the EU Water Framework Directive - Vingsted Centret, Vingsted, Danmark
Varighed: 6 aug. 20069 aug. 2006

Publikationsserier

NavnNHP Report
ForlagNordic Association for Hydrology
Vol/bind49

Konference

KonferenceXXIV Nordic Hydrological Conference. NORDIC WATER 2006.
Forkortet titelNHC 2006
Land/OmrådeDanmark
ByVingsted
Periode6/08/069/08/06

Programområde

  • Programområde 2: Vandressourcer

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