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The Calibration and Use of Capacitance Sensors to Monitor Stem Water Content in Trees
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Measuring Tree Properties and Responses Using Low-Cost Accelerometers.

Tim van Emmerik1, Susan Steele-Dunne2, Rolf Hut3

  • 1Water Resources Section, Delft University of Technology, Delft 2628 CN, The Netherlands. T.H.M.vanEmmerik@tudelft.nl.

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Summary
This summary is machine-generated.

Researchers used affordable accelerometers to measure tree sway, revealing connections between tree motion, physical properties like mass, and environmental factors such as precipitation and atmospheric exchange.

Keywords:
Amazoncanopyclimate changedrag coefficienthydrologyinterceptiontree physiologytree swayturbulencewind

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Area of Science:

  • Environmental science
  • Forest ecology
  • Biophysics

Background:

  • Trees are vital to global cycles (water, carbon, nitrogen).
  • Understanding tree-atmosphere interactions is key for climate change impact assessment.
  • Traditional ground measurements of tree properties are often costly and difficult.

Purpose of the Study:

  • To demonstrate the use of affordable accelerometers for measuring tree properties and responses.
  • To establish a novel, cost-effective method for ecological monitoring.
  • To link tree sway dynamics to physical and environmental factors.

Main Methods:

  • Deployment of accelerometers on 19 trees in the Brazilian Amazon for five months.
  • Recording and analysis of tree acceleration data.
  • Frequency spectrum analysis of tree sway patterns.

Main Results:

  • Tree sway frequency spectrum correlates with tree mass and canopy structure.
  • Acceleration data revealed relationships between tree motion and precipitation interception.
  • Measured tree sway indicates canopy-atmosphere turbulent exchange dynamics.

Conclusions:

  • Affordable accelerometers offer a viable method for assessing tree properties and responses.
  • Tree sway dynamics provide insights into crucial ecological processes.
  • This technique can enhance monitoring of forest ecosystems under environmental change.