Influence of environmental conditions on radial patterns of sap flux density of a 70-year Fagus crenata trees in the Naeba Mountains, Japan Mitsumasa Kubota, John Tenhunen, Reiner Zimmermann, Markus Schmidt and Yoshitaka KakubariAnn. For. Sci., 62 4 (2005) 289-296DOI: https://doi.org/10.1051/forest:2005023