Description: Das Projekt "Massenbilanz fuer die Planung und Steuerung der sanften Sanierung und anschliessenden nachhaltigen Nutzung kontaminierter landwirtschafticher Boeden" wird vom Umweltbundesamt gefördert und von Eidgenössische Technische Hochschule Zürich, Institut für Terrestrische Ökologie, Fachbereich Bodenschutz durchgeführt. Gentle remediation of agricultural soils by extraction of polluting heavy metals through accumulator plants is an emerging technique which has the advantage that soil fertility is restored, while it is sacrificed for the goal of detoxification by other techniques such as soil excavation, washing, incineration or metal extraction by strong acids. The disadvantage is that the process is rather slow. The planning of such remediation operations thus demands for a careful assessment of the required time. For this purpose mass flux balances must be sufficiently accurate. In this project the method PROTERRA, which was previously developed for establishing regional mass flux balances of heavy metals in agricultural land, was adapted for application in planning and monitoring gentle soil remediations in the framework of sustainable land use. The main scientific objectives were (i) to develop adequate methods for quantifying the reliability and the accuracy of such mass balances and (ii) to integrate gentle soil remediation operations into a regional soil monitoring concept. For these tasks we extended PROTERRA by a stochastic module evaluating and propagating probability distributions of parameters to account for their uncertainty. The new model, PROTERRA-S, estimates cadmium-, zinc- and copper flux balances for regions of about 100 km2 and quantifies the contribution of uncertain parameters to the total variance of the net-metal fluxes using uncertainty analysis. The model results are calculated in two steps: (i) metal flux balances for land-use classes within the region (stratified by cropping system and farm type) and (ii) metal flux balances on regional scale, which indicate an average metal flux balance. We applied the model to a testregion Sundgau, Cantons BL and SO, of about 95 km2. The mass flux balances of the land-use classes can be used to assess subsequent agricultural land use of sites, that were remediated by metal-accumulating plants. To sum up, PROTERRA-S is a transparent scientific tool for taking suitable measures in order to prevent metal accumulation in agricultural soils including uncertainties of metal flux balances.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Zürich ? Kupfer ? Ackerbau ? Akkumulator ? Cadmium ? Ökologie ? Zink ? Schwermetall ? Main ? Landwirtschaftlicher Betrieb ? Bodenverunreinigung ? Entgiftung ? Landwirtschaftliche Nutzung ? Varianzanalyse ? Verbrennung ? Waschanlage ? Metall ? Bodenfruchtbarkeit ? Bodennutzung ? Ackerboden ? Abgrabung ? Ackerland ? Flächennutzung ? Nachhaltige Landnutzung ? Modul ? Monitoring ? Bilanz ? Standortwahl ? Stochastik ? Stoffbilanz ? Bodenbelastung ? Pflanze ? Biologische Behandlung ? Modellierung ? Sanierungsplan ? Bodenmonitoring ? Bodensanierung ? Bodenschutz ? Schadstoffakkumulation ? Nachhaltige Bewirtschaftung ? Planung ? Stoffstrom ? Sanierung ? Bewirtschaftungssystem ? PROTERRA-S ? Gleichgewichtsmodell ? gentle remediation ? mass flux balancing ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1996-01-01 - 2024-11-29
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