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RAMSOIL, Risk assessment methodologies for soil threats

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Title RAMSOIL, Risk assessment methodologies for soil threats
Period 06 / 2007 - unknown
Status Completed
URL http://www.ramsoil.eu
Research number OND1323701

Abstract

Numerous methods are used to evaluate risks related to soil functioning. For five soil threats, viz. erosion, compaction, salinization, soil organic matter decline and landslides an EU wide inventory was made. In total, at least 26 official risk assessment methods (RAMs) could be clearly distinguished, while many other RAMs were basically similar and differed only in details. For instance, for compaction, most EU member states use deterministic models, which differed only in the level of detail, but risk indicators and the associated threshold values (i.e. risk perception) greatly varied. Some countries used e.g. a minimum saturated hydraulic conductivity (ranging from 10 to 24 cm d-1), whereas others used a maximum penetrometer value (ranging from 2 to 6 Mpa). In many cases there is a sound scientific basis to use different indicators and threshold values, but the validation of RAMs with field data is often poor, which makes it difficult to evaluate the appropriateness of indicators and treshold values. Also, in many cases RAMs simply developed independently with sometimes different purposes and therefore use different approaches. Notably, the implementation of official RAMs not only depends on the scientific basis of the RAM, but also on the acceptability (including costs) and the flexibility of the RAM. Harmonization of risk perception can be achieved through various activities ranging from synchronizing output data to prescribing complete RAMs. The first possibility is relatively easy but demands for extensive calibration and is therefore expensive. The latter possiblity is cheap but looses on geographical precision and public acceptance. Options for harmonization differ per soil threat, as is the maximum level of harmonization that can be achieved. This diversity is a function of the number of expressions of a soil threat (e.g. water erosion, wind erosion) and the nature of the expressions. Hence, it is unlikely that all soil threats can (or should) be harmonized up to the same level. In year 2 we will identify options for harmonization for each soil threat

Abstract (NL)

Doel
RAMSOIL is gericht op het inventariseren en harmoniseren van methodieken voor risicoschatting van bodembedreigingen in de EU in het kader van de EU soil strategy.

Werkwijze:
Het doel van het project is het koppelen van de resultaten van projecten van Alterra/DOW met projecten van ISSCAS, Nanjing, China op het gebied van de interactie tussen bodem/plant voor zware metalen. Hierdoor worden de resultaten van deze praktijkgerichte studies wetenschappelijk uitgediept door middel van publicaties, workshops, uitwisseling onderzoekers etc. In jaar 1 lag de nadruk van RAMSOIL op het verzamelen van RAMs in de EU. Er zijn ongeveer 200 questionnaires verstuurd naar contactpersonen in de EU. De geretourneerde questionnaires (105, return rate = 52%) zijn opgeslagen in een database. Een geanomiseerde versie van deze database is toegankelijk via de project website http://www.ramsoil.eu

Resultaten:
- RAMSOIL levert naar verwachting: 3-5 wetenschappelijke publicaties
- database met risk assessment methodologies (RAM's) in de EU
- kaarten met risicogebieden
- website (is gereed: http://www.ramsoil.eu )
- diverse reports

Vooral de database en de kaarten van risicogebieden zijn interessant voor vervolgonderzoek.Een aanzienlijk deel van het project zal uitgevoerd worden in workshops waarin opdrachtgevers en gebruikers een belangrijke positie hebben.

Publicaties bij dit project zijn beschikbaar via deze Link

Related organisations

Related people

Project leader Dr.ir. C.L. van Beek

Related research (upper level)

Classification

A13000 Soil
D15100 Geochemistry, geophysics

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