Stem sap flow of Dahurian larch (Larix gmelinii Rupr.) trees transplanted from a latitudinal gradient The Studies of the Photosynthetic Characteristics of Larix olgensis Herry., Larix kaempferi Carr. and Larix gmelinii Rupr. Seedlings Vernal soil respiration of Larix gmelinii Rupr. forests transplanted from a latitudinal transect Ecoregion based Height-diameter Models for Larix gmelinii Rupr. in Daxing’an Mountains THE RELATIONSHIP BETWEEN pH CHANGES AND P-AVAILABILITY IN RHIZOSPHERE OF LARIX GMELINII