Results 211 to 220 of about 3,191,228 (246)
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Plant, Cell and Environment, 1995
ABSTRACTSap flow in the stems of two cut saplings each of Eucalyptus maculata (a canopy eucalypt forest tree), Doryphora sassafras and Ceratopetalum apetalum (both canopy rainforest trees of south‐eastern coastal Australia) was measured by the heat pulse velocity technique and compared with water uptake from a potometer.
Marilyn Ball, Damian Barrett
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ABSTRACTSap flow in the stems of two cut saplings each of Eucalyptus maculata (a canopy eucalypt forest tree), Doryphora sassafras and Ceratopetalum apetalum (both canopy rainforest trees of south‐eastern coastal Australia) was measured by the heat pulse velocity technique and compared with water uptake from a potometer.
Marilyn Ball, Damian Barrett
exaly +5 more sources
Measurement of bleeding sap flow velocity in xylem bundle of herbs by laser probing
SPIE Proceedings, 1991A method for measuring the bleeding sap flow velocity (BSFV) in xylem bundle of herbs by means of He-Ne laser probing is developed. The method is applied to the study of the BSFV dependence in conductive bundles on the illumination of the herb and on the value of bioelectric potentials (BEP) between the base and the top of the herb.
Yuri A. Romanovsky +2 more
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Journal of Experimental Botany, 1985
Gray, H. R., Erickson, P. I. and Stone, J. F. 1985. An improved thermoelectric probe for measurement of apparent sap flow velocity in intact plant stems.—J. exp. Bot. 36: 1320-1324. An improved thermoelectric technique for non-intrusive, non-destructive, and direct sensing of the apparent velocity of sap flow in intact plant stems is presented.
H. R. GRAY, P. I. ERICKSON, J. F. STONE
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Gray, H. R., Erickson, P. I. and Stone, J. F. 1985. An improved thermoelectric probe for measurement of apparent sap flow velocity in intact plant stems.—J. exp. Bot. 36: 1320-1324. An improved thermoelectric technique for non-intrusive, non-destructive, and direct sensing of the apparent velocity of sap flow in intact plant stems is presented.
H. R. GRAY, P. I. ERICKSON, J. F. STONE
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Radial profile of sap flow velocity in mature Xinjiang poplar (Populus alba L. var. pyramidalis) in Northwest China [PDF]
Journal of Arid Land, 2014 Estimation of the transpiration rate for a tree is generally based on sap flow measurements within the hydro-active stem xylem. In this study, radial variation of sap flow velocity (J s ) was investigated at five depths of the xylem (1, 2, 3, 5 and 8 cm under the cambium) in three mature Xinjiang poplar
Tian-Shan Zha +2 more
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Ying yong sheng tai xue bao = The journal of applied ecology, 2023
The sap flow of trees is complex and difficult to express with multivariate linear or empirical models. A simple and feasible method on the basis of understanding sap flow variation to simulate its variation with environmental factors is of special importance for quantitatively analyzing forest ecohydrological processes and regional water demand.
Peng, Zhou +6 more
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The sap flow of trees is complex and difficult to express with multivariate linear or empirical models. A simple and feasible method on the basis of understanding sap flow variation to simulate its variation with environmental factors is of special importance for quantitatively analyzing forest ecohydrological processes and regional water demand.
Peng, Zhou +6 more
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Proposal for a Resin Type Sap Flow Velocity Sensor and its Demonstration Experiment in a Greenhouse
2025 IEEE SENSORSYusuke Sakamoto, Fusao Shimokawa
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Journal of Agricultural Engineering Research, 1989
A new concept of a heat pulse technique for the measurement of sap flow in plants is presented. It is based on using a single sensor, rather than the multiprobe arrangements, as used up to now. The single probe serves both as a heat source, and subsequently, as a sensor of the temperature transient decay.
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A new concept of a heat pulse technique for the measurement of sap flow in plants is presented. It is based on using a single sensor, rather than the multiprobe arrangements, as used up to now. The single probe serves both as a heat source, and subsequently, as a sensor of the temperature transient decay.
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Hydrological Processes, 2011
AbstractIn this study, we aimed to clarify spatial variations in xylem sap flow, and to determine the impacts of these variations on stand‐scale transpiration (E) estimates. We examined circumferential and radial variations in sap flow velocity (Fd) measured at several directions and depths in tree trunks of black locust (Robinia pseudoacacia) and ...
Tomonori Kume +5 more
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AbstractIn this study, we aimed to clarify spatial variations in xylem sap flow, and to determine the impacts of these variations on stand‐scale transpiration (E) estimates. We examined circumferential and radial variations in sap flow velocity (Fd) measured at several directions and depths in tree trunks of black locust (Robinia pseudoacacia) and ...
Tomonori Kume +5 more
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Tree Physiology, 1998
Unlike an ideal system, the return time to thermal balance (t(b)) between upstream and downstream thermistors, as measured by the (compensation) heat pulse velocity method, effectively depends on the heat input and the water content of the wood at zero and low sap flow.
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Unlike an ideal system, the return time to thermal balance (t(b)) between upstream and downstream thermistors, as measured by the (compensation) heat pulse velocity method, effectively depends on the heat input and the water content of the wood at zero and low sap flow.
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Chemosphere, 1998
Abstract Sap-flow of Quercus robur, Quercus petraea and Quercus cerris oak trees were studied. 43 K radioisotope tracing, the heat pulse velocity technique and the Granier-method were employed. Numerous intense pulses were observed in healthy Quercus petraea superposing onto the usual diurnal change.
Fenyvesi A +8 more
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Abstract Sap-flow of Quercus robur, Quercus petraea and Quercus cerris oak trees were studied. 43 K radioisotope tracing, the heat pulse velocity technique and the Granier-method were employed. Numerous intense pulses were observed in healthy Quercus petraea superposing onto the usual diurnal change.
Fenyvesi A +8 more
openaire +2 more sources