Soil water chemistry and revegetation of a limed clearcut in a nitrogen saturated forest

Luc De Keersmaeker, Johan Neirynck, D Maddelein, A De Schrijver, N Lust

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    Abstract

    A clearcut stand of Pinus sylvestris in Flanders (Belgium) was limed with 3 ton/ha dolomite and reforested with Acer pseudoplatanus and Fagus sylvatica. Soil water monitoring revealed an overall decrease of ion concentrations and an annual peak in September due to seasonal nitrification. Liming reduced concentrations of NO3- and Al3+ and raised concentrations of K+ and Mg2>+ and the molar ratio of (Ca+Mg)/Al. Liming also stimulated release of SO42-, which prevented a rise of pH, except during nitrification peaks. Liming had no effect on height increment of Fagus but stimulated Acer, which suffered from severe deficiencies of calcium (Ca), magnesium (Mg), potassium (K), and phosphorus (P) without treatment. Nitrogen (N) was not growth-limiting for Fagus or Acer and liming had no effect on N concentrations in leaves of both species. Liming had a strong impact on ground vegetation. Nutrient-demanding species expanded while species that tolerate nutrient-poor conditions decreased. It is argued that changes in ground vegetation had a greater impact on reduction of NO3 - concentration in soil water than increased tree growth.
    Original languageEnglish
    JournalWater, Air, and Soil Pollution
    Volume122
    Issue number1/2
    Pages (from-to)49-62
    Number of pages14
    DOIs
    Publication statusPublished - 2000

    Thematic list

    • Species and biotopes

    EWI Biomedical sciences

    • B430-sylviculture

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