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註釋The main portion of this paper describes the implementation of the British Columbia Long-term Soil Productivity project, which is based on a comprehensive model that will provide information about the relative effects of soil compaction and the removal of site organic matter on tree growth. It reviews the history of the project and the scientific basis for the project studies, then describes the project sites and plot layouts, harvesting and site treatment methods, conifer regeneration studies, and three ancillary studies on the following subjects: ectomycorrhizal fungi, root development, and seedling nutrition; soil fauna; and soil atmosphere.