Record details

Title
    Major changes in forest carbon and nitrogen cycling caused by declining sulphur deposition
Author
    Cudlín, Pavel
    Evans, Christopher
    Hofmeister, Jeňýk
    Hruška, Jakub
    Krejčí, Radovan
    Oulehle, Filip
    Persson, Tryggve
    Tahovská, Karolína
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Global Change Biology
Vol./nr.
    Roč. 17, č. 10
Pages
    16
Year
    2011
Thesaurus term
    sulphur, nitrogen, carbon, DOC, deposition, leaching, forest floor, soil, acidification, nitrogen saturation
Keyword
    Carbon
    Caused
    Changes
    Cycling
    Declining
    Deposition
    Forest
    Major
    Nitrogen
    Sulphur
Abstract (in english)
   Sulphur (S) and nitrogen (N) deposition are important drivers of the terrestrial carbon (C) and N cycling. We analyzed changes in C and N pools in soil and tree biomass at a highly acidified spruce site in the Czech Republic during a 15-year period. Total S deposition decreased from 5 to 1.1 g m-2 yr-1 between 1995 and 2009, while bulk N deposition did not change. Over the same period, C and N pools in the Oa horizon declined by 116 g C and 4.2 g N m-2 yr-1, a total decrease of 47% and 42%, respectively. This loss of C and N probably originated from organic matter (OM) that had accumulated during the period of high acid deposition when litter decomposition was suppressed. Our results demonstrate that reducing S deposition has had a profound impact on forest organic matter cycling, leading to a reversal of historic ecosystem N enrichment, cessation of nitrate leaching, and a major loss of accumulated organic soil C and N stocks.
Contributor
    Česká geologická služba
Contributor code
    ČGS (RIV)
Source format
    R
Import date
    15. 10. 2014