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Research article - Peer-reviewed, 2006

Gross nitrogen mineralization rates still high 14 years after suspension of N input to a N-saturated forest

Chen Y, Hogberg P

Abstract

Significant areas of temperate forests in Central Europe, NE America and E Asia receive high amounts of N deposition. According to the few studies available, suspension of the N load leads to reductions in both inorganic soil N and leaching of N within a few years. We report that, surprisingly, N is still mineralized at high rates 14 yr after suspension of a previous N-load of > 100 kg N/ha yr for 20 yr. In this treatment, gross N mineralization rates exceeded those in control plots by a factor 3, but equaled those in still on-going (34 yr of) treatments with 30 and 60 kg N/ha yr, in which levels of extractable NH4+ were up to 10 times higher. (c) 2006 Elsevier Ltd. All rights reserved

Published in

Soil Biology and Biochemistry
2006, Volume: 38, number: 7, pages: 2001-2003
Publisher: PERGAMON-ELSEVIER SCIENCE LTD

    SLU Authors

    • Chen, Yu

      • Department of Forest Ecology, Swedish University of Agricultural Sciences

      • Högberg, Peter

        • Department of Forest Ecology, Swedish University of Agricultural Sciences

      UKÄ Subject classification

      Environmental Sciences related to Agriculture and Land-use

      Publication Identifiers

      DOI: https://doi.org/10.1016/j.soilbio.2005.11.026

      Permanent link to this page (URI)

      https://res.slu.se/id/publ/8922