Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1080/02626667.2011.590811 |
| Title (Primary) | Instrumental method for reducing error in compression-derived measurements of rainfall interception for individual trees |
| Author | Van Stan, J.; Jarvis, M.; Levia, D.; Friesen, J.
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| Source Titel | Hydrological Sciences Journal-Journal des Sciences Hydrologiques |
| Year | 2011 |
| Department | CHS; CATHYD |
| Volume | 56 |
| Issue | 6 |
| Page From | 1061 |
| Page To | 1066 |
| Language | englisch |
| Keywords | forest hydrology; interception; stem compression; mechanical displacement sensor; LaserBark (TM) |
| Abstract | This technical note presents an instrumental method for the precise and timely installation of mechanical displacement sensors to investigate stem compression and relaxation associated with whole-tree rainwater loading and evaporation, respectively. We developed this procedure in response to the conclusions of Friesen et al. (2008), which called for the development of a precision mounting method for strain sensors on inherently-irregular trunk cross-sections so that rainfall interception, storage and evaporation may be distinguished from other strain-related phenomena. To supply precise sensor installation locations, high-resolution trunk profiles are generated using the LaserBark (TM) automated tree measurement system. These scans are utilized to approximate the location of neutral bending axes. A routine then instructs a mobile rangefinder along the cross-section to optically indicate exact positioning for strain sensors over the bending axes. As imprecise sensor placement linearly increases error and diminishes signal-to-noise ratio, this automated installation routine is designed to remove significant distortions created by wind throw, off-centre loading within unevenly-distributed canopies, and human error that can lead to erroneous measurements of rainfall interception. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=11082 |
| Van Stan, J., Jarvis, M., Levia, D., Friesen, J. (2011): Instrumental method for reducing error in compression-derived measurements of rainfall interception for individual trees Hydrol. Sci. J.-J. Sci. Hydrol. 56 (6), 1061 - 1066 10.1080/02626667.2011.590811 |
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