Radial diffusion, vertical transport, and refixation of labeled bicarbonate in scots pine stems
John D Marshall, Swedish University of Agricultural Sciences, Department of Forest Ecology and Management, Umeå, Sweden, Lasse Tarvainen, SLU Swedish University of Agricultural Sciences Umeå, Dept. of Forest Ecology and Management, Umeå, Sweden and Göran Wallin, University of Gothenburg, Dept. of Biological and Environmental Sciences, Gothenburg, Sweden
