This page contains specific information about giant sequoia (Sequoiadendron giganteum)
'172', which can be found on the landgoed Sandwijck
in De Bilt
Girth growth rate
The girth was measured more than once:
|Year||Girth@1.3 m||Measurement||Girth growth rate|
|2000||~4.64 m||D. C. Hasselman||-|
|2006||4.90 m||Margriet Janssen||4 cm/year|
The growth rate shown in the table shows the yearly average increase in girth since the last measurement. This value only gives an indication of the growth rate, since every measurement could be done at slightly different heights and during different periods of the year.
The height was measured more than once:
|2006||>30 m ||Margriet Janssen||Measurement method unknown|
|2011-02-01||33.40 m||Joris Hellevoort||Laser with Sine method (e.g. Nikon Forestry 550 laser rangefinder)|
Each measurement can be done with varying accuracy.
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The photos are provided by Margriet Janssen.
Show all images (6 in total)...