3/24/2023 0 Comments Logger pro uncertaintyFurthermore, measurements of whole-tree transpiration show great value in validating regional water-balance simulations (Wilson et al., 2001 Ford et al., 2007 Reyes-Acosta & Lubczynski, 2013), interspecific comparison of stomatal conductance behaviour (Damour et al., 2010), modelling stable isotope enrichment (Song et al., 2013 Sutanto et al., 2014) and mechanistically explaining wood formation (De Schepper & Steppe, 2010 Fatichi et al., 2014 Steppe et al., 2015). The presented ensemble of calibration curves and proposed dampening correction, together with the systematic quantification of data-processing uncertainties, provide crucial steps in improving whole-tree water-use estimates across spatial and temporal scales.Īccurate measurements of whole-tree water use are important as terrestrial plant transpiration plays a key role in the global hydrological cycle (Holbrook & Zwieniecki, 2003 Schlesinger & Jasechko, 2014 Good et al., 2015 Fatichi & Pappas, 2017).Additionally, although the interdaily variability was maintained, disregarding dampening and/or applying zero-flow conditions that ignored night-time water use reduced the correlation between environment and F d. Lacking a site- and species-specific calibrations reduced our stand water-use measurements by 37% and induced uncertainty in northern hemisphere F d. Commonly applied methods mostly underestimated absolute F d.Uncertainties were then projected on TDM data from different conifers across the northern hemisphere. Their contribution has been assessed using a stem segment calibration experiment and 4 yr of TDM measurements in Picea abies and Larix decidua growing in contrasting environments. We quantified uncertainties in conifer sap flux density ( F d) and stand water use caused by commonly applied methods for deriving zero-flow conditions, dampening and sensor calibration. ![]() ![]() Yet, different data processing to calculate whole-tree water use encapsulates uncertainties that have not been systematically assessed. Trees play a key role in the global hydrological cycle and measurements performed with the thermal dissipation method (TDM) have been crucial in providing whole-tree water-use estimates.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |