Transpiration Rule of Pinus sylvestris var. mongolica and Its Relation to the Canopy Micrometeorology in Mu Us Sandy Area SAP FLOW FLUCTUATIONS OF PINUS TABULAEFORMIS AND PLATYCLADUS ORIENTALIS IN LATE AUTUMN Influence of trunk natural temperature gradient change on sap flow velocity measured with thermal dissipation method Effects of temperature and sap flow velocity on CO2 efflux from stems of three tree species in spring and autumn in Northeast China Influence of soil temperature on sap flow of Pinus tabulaeformis Study on Proper Stand Density of Pinus sylvestris var. mongolica Plantation in Sandy Land Based on Stem Sap Flow Velocity Sap Flow of Populus euphratica in a Desert Riparian Forest in an Extreme Arid Region During the Growing Season Spatial Variation of Sap Flow of Platycladus orientalis and Its Affecting Factors Study of the rate of stem sap flow in Pinus tabulaeformis and Quercus variabilis by using the TDP method Wholetree sap flow of Quercus liaotungensis and Populus davidiana in response to environmental factors in the loess plateau area of western Shanxi Province, northern China. Change of Quercus acutissima Trunk Pondage in Different Season Study on sap flow in forest of Quercus liaotungensis and Populus davidiana by using the TDP method The Radial Distribution of Xylem Sap Flow Velocity in Trunks of Pear Trees