Theoretical disputes over forest nitrogen fertilization

• The theoretical disputes over forest nitrogen (N) fertilization constitute a difficulty for forest managers. In cases where scientists disagree it is hard for practitioners to make scientifically based decisions on what actions to take. The main objective in this study was to understand possible reasons for the scientific discussion associated with the question as to how fertilization for increased forest growth influences the forest ecosystem? Another objective was to clarify the divergent theoretical grounds within this scientific field. The study proceeded by selecting articles based on the criterion that they include field studies of fertilization for stem growth in the temperate region, and then analysing their theoretical content. Differences in theoretical grounds are among the reasons for the scientific disputes over the effects of N fertilization on forest ecosystems. © 2004 University of Newcastle upon Tyne.

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