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2011 Report „ Effects of air pollution on forests “ Two studies Forest soil condition PowerPoint PPT Presentation


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2011 Report „ Effects of air pollution on forests “ Two studies Forest soil condition Bruno De Vos et al. (FSCC at INBO, Belgium ) Forest biodiversity under deposition impact Co- operation with ICP M&M Max Posch et al. (CCE) Hans-Dieter Nagel et al. (ÖKO-DATA) Data from

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2011 Report „ Effects of air pollution on forests “ Two studies Forest soil condition

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2011 report effects of air pollution on forests two studies forest soil condition

  • 2011 Report „Effectsofairpollution on forests“

  • Twostudies

  • Forestsoilcondition

    • Bruno De Vos et al. (FSCC at INBO, Belgium)

  • Forestbiodiversityunderdepositionimpact

    • Co-operationwith ICP M&M

      • Max Posch et al. (CCE)

      • Hans-Dieter Nagel et al. (ÖKO-DATA)

  • Data from

    • ICP Forests (Levels I and II)

    • EC (Regulation Forest Focus)


2011 report effects of air pollution on forests two studies forest soil condition

  • Forestsoilconditionanditschange

  • Twoforestsoilsurveys

  • On morethan 5.000 Level I plots

  • ICP Forests:1986-1996

  • EC: 2004-2008 under Regulation (EC) 2152/2003 Forest Focus

  • (applicationof ICP Forestsmethods)

  • Presentreportfocus on

  • C/N ratio

  • C/N index

  • Base saturation

  • pH


2011 report effects of air pollution on forests two studies forest soil condition

  • C/N ratio

  • In healthyforests:

  • C/N ratio on forestfloor (C/N FF)

  • higher

  • C/N ratio in mineralsoil (C/N MIN)

  • Underhigh N-pollutionloads:

  • C/N FF < C/N MIN

  • Usefulindicatorforexcess N:

  • C/N FF

  • C/N index =---------

  • C/N MIN


2011 report effects of air pollution on forests two studies forest soil condition

  • C/N index

  • C/N index < 1

  • Organic matter and nutrient cycling disturbed

  • Risk to forest health

  • Areas of C/N index < 1

  • Red (France, Germany, Latvia)

  • C/N index

  • Lower in central/western Europe

  • Higher in northern, eastern and southern Europe


2011 report effects of air pollution on forests two studies forest soil condition

  • Base saturation

  • Gradient

  • Lower in northern Europe

  • Higher in southern Europe

  • Geologic origin

  • Upper mineral soil (0-10 cm)

  • Central Europe

    • Soils with low base saturation

    • (< 20%)

    • Result of acid deposition

  • Share of plots with low base saturation

    • First survey: 48%

    • Second survey: 28%

    • Recovery


2011 report effects of air pollution on forests two studies forest soil condition

  • pH

  • Changesbetweentwosurveys

  • Increase on plotswithacidsoils (pH < 4.0)

  • Decrease on plotswithlessacidsoils (pH > 4.0)


2011 report effects of air pollution on forests two studies forest soil condition

  • Development offorestbiodiversity

  • Deposition scenario „NATIONAL“

  • Implementationofemission-relatedlegislation in EU-27

  • (LatestversionbyCCE)

  • Applicationof VSD+

  • 20 Level II plots

  • 12 countries

  • Changesfrom 2000 to 2050

    • C/N

    • Base saturation

  • Application BERN

  • Resultsof VSD+ asinput variables

  • Response of plant communitiessimulated


2011 report effects of air pollution on forests two studies forest soil condition

  • Resultsof BERN

  • Adaptation of plant communities

  • tositeconditions

  • High on 10 plots

    • Fullregeneration potential

    • High vitality

  • Moderate on 5 plots

    • Low regeneration potential

    • Reducedvitality

  • Low on 4 plots

    • Noregeneration potential

    • Low vitality


2011 report effects of air pollution on forests two studies forest soil condition

  • Presentlygrowingtreespecies

  • Adaptation determinedfor

  • Present time

  • 2050

  • Site conditionspredicted

  • todeteriorate on 4 plots

  • toimprove on 3 plots

  • For all 19 plots

  • „targettreespecies“


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