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    Research at the Speulder forest: assessment of the effects acidification , eutrophication and ozone

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    Authors
    Erisman JW
    Draaijers GPJ
    Steingrover E
    Dijk H van
    Boxman A
    Vries W de
    Type
    Report
    Language
    en
    
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    Title
    Research at the Speulder forest: assessment of the effects acidification , eutrophication and ozone
    Translated Title
    Onderzoek in het Speulderbos: vaststelling van effekten van verzuring, eutrofiering en ozon
    Publiekssamenvatting
    In het kader van het Additioneel Programma Verzurings-onderzoek werd tien jaar onderzoek uitgevoerd in de Douglas opstand Speulderbos. Het doel van dit onderzoek was het bepalen van de blootstelling en belasting van verzurende en eutrofierende stoffen, en de schadelijke invloed ervan op de vitaliteit van de Douglasbomen en het gehele bos-ecosysteem. Hiervoor werd onderzoek uitgevoerd naar de concentratieniveaus en depositieniveaus van verzurende componenten en ozon ; de boskarakteristieken ; de groei- parameters ; de nutrientenstatus en de effecten van een reduktie van de belastingen met behulp van manipulatie-experimenten. In dit rapport zijn de resultaten van 10 jaar onderzoek gebruikt om de causale verbanden tussen blootstelling en belasting en effecten te bepalen. Hiervoor werden specifiek voor het Speulderbos zogenaamde 'critical levels' en 'critical loads' afgeleid, evenals de ontwikkeling in de overschrijding ervan. Deze overschrijdingen werden vergeleken met de geobserveerde effecten, welke gedefinieerd zijn als ecosysteem-veranderingen als gevolg van milieubelastingen.
    Within the framework of the Dutch Priority Program on Acidification, 10 years of research was conducted at the Douglas fir Speulder forest. The aim of the combined research was to determine the exposure and loads of acidifying and eutrophying pollutants, as well as their harmful influence on the vitality of Douglas fir trees and the forest ecosystem as a whole. Research was conducted to establish the levels and loads of acidifying pollutants and ozone, to determine forest characteristics and follow growth parameters and nutrient status in time and to determine the effects of reduction of loads and levels by manipulation experiments. In this report the results of 10 years of research are used to assess the causal relation between loads and levels on the one hand and effects on the other. For this, critical levels and critical loads were determined specifically for the Speulder forest, and the evolution of its exceedance was assessed. These exceedances were compared to the observed effects, which are defined as ecosystem changes as a result of environmental impacts.
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    DGM/LE
    URI
    http://hdl.handle.net/10029/258814
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