(BOREAS) BOREAS TE-7 Sap Flow Data PDF Download
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Languages : en
Pages : 34
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Author:
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Category :
Languages : en
Pages : 34
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Category :
Languages : en
Pages : 24
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781726135900
Category :
Languages : en
Pages : 32
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The BOREAS TE-7 team collected data sets in support of its efforts to characterize and interpret information on the sap flow of boreal vegetation. The heat pulse method was used to monitor sap flow and to estimate rates of transpiration from aspen, black spruce, and mixed wood forests at the SSAOA, MIX, SSA-OBS. and Batoche sites in Saskatchewan, Canada. Measurements were made at the various sites from May to October 1994, May to October 1995, and April to October 1996. A scaling procedure was used to estimate canopy transpiration rates from the sap flow measurements. The data were stored in tabular ASCII files. Analyses to date show a tendency for sap flow in aspen to remain remarkably constant over a wide range of environmental conditions VPD from 1.0 to 4.8 kPa and solar radiation less than 400 W/sq m). For forests with high aerodynamic conductance, the results would indicate an inverse relationship between stomatal conductance and VPD, for VPD greater than 1 kPa. A possible interpretation is that stomata are operating to maintain leaf water potentials above a critical minimum value, which in turn places a maximum value on the rate of sap flow that can be sustained by the tree. The data files are available on a CD-ROM (see document number 20010000884), or from the Oak Ridge National Laboratory (ORNL) Distrobuted Activity Archive Center (DAAC).Hall, Forrest G. (Editor) and Papagno, Andrea (Editor) and Hogg, E. H. and Hurdle, P. A.Goddard Space Flight CenterDATA ACQUISITION; VEGETATION; WATER; TRANSPIRATION; FLOW VELOCITY; FLOW MEASUREMENT; TABLES (DATA); WOOD; SOLAR RADIATION; FORESTS; CONIFERS; SASKATCHEWAN
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ISBN:
Category :
Languages : en
Pages : 22
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Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781720354147
Category :
Languages : en
Pages : 32
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Book Description
The BOREAS TE-7 team collected data sets in support of its efforts to characterize and interpret information on the sap flow of boreal vegetation. The heat pulse method was used to monitor sap flow and to estimate rates of transpiration from aspen, black spruce, and mixed wood forests at the SSAOA, MIX, SSA-OBS. and Batoche sites in Saskatchewan, Canada. Measurements were made at the various sites from May to October 1994, May to October 1995, and April to October 1996. A scaling procedure was used to estimate canopy transpiration rates from the sap flow measurements. The data were stored in tabular ASCII files. Analyses to date show a tendency for sap flow in aspen to remain remarkably constant over a wide range of environmental conditions VPD from 1.0 to 4.8 kPa and solar radiation less than 400 W/sq m). For forests with high aerodynamic conductance, the results would indicate an inverse relationship between stomatal conductance and VPD, for VPD greater than 1 kPa. A possible interpretation is that stomata are operating to maintain leaf water potentials above a critical minimum value, which in turn places a maximum value on the rate of sap flow that can be sustained by the tree. The data files are available on a CD-ROM (see document number 20010000884), or from the Oak Ridge National Laboratory (ORNL) Distrobuted Activity Archive Center (DAAC).Hall, Forrest G. (Editor) and Papagno, Andrea (Editor) and Hogg, E. H. and Hurdle, P. A.Goddard Space Flight CenterDATA ACQUISITION; VEGETATION; WATER; TRANSPIRATION; FLOW VELOCITY; FLOW MEASUREMENT; TABLES (DATA); WOOD; SOLAR RADIATION; FORESTS; CONIFERS; SASKATCHEWAN
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Category :
Languages : en
Pages : 22
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Category : Forests and forestry
Languages : en
Pages : 810
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Category : Arbovirus infections
Languages : en
Pages : 34
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Author: Worrall Reed Carter
Publisher:
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Category : Logistics, Naval
Languages : en
Pages : 514
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Author: James H. Speer
Publisher: University of Arizona Press
ISBN: 0816526850
Category : Science
Languages : en
Pages : 360
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Book Description
This comprehensive text addresses all of the subjects that a reader who is new to the field will need to know and will be a welcome reference for practitioners at all levels. It includes a history of the discipline, biological and ecological background, principles of the field, basic scientific information on the structure and growth of trees, the complete range of dendrochronology methods, and a full description of each of the relevant subdisciplines.
