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field_methods:vegetation_plant_height

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field_methods:vegetation_plant_height [2014/02/09 14:49]
jgh [Introduction]
field_methods:vegetation_plant_height [2014/02/09 15:19]
jgh
Line 11: Line 11:
  
 ===== Method ===== ===== Method =====
-Plant height is measured with a graduated survey rod or measuring stick with a 30cm disc affixed to the top of the measuring tool.  An imagery cylinder ​extending ​from the disc's circumference to the ground ​forms a transect.  The highest point of any plant (living or dead) that falls within ​the transect ​is recorded. ​ Woody and/or herbaceous plants are differentiated. ​  If both woody and herbaceous plants are present ​within ​the transect, the tallest of each type of plant is recorded. ​ If no plants are present, a value of "​0"​ is recorded. ​ Transects are established at regular intervals (5m is recommended) with a minimum of 30 height measurements per plot.  ​+{{:​field_methods:​veg_height_1a.png}}\\ 
 +** A graduated rod and disc is used measure vegetation height. ** 
 + 
 +Plant height is measured with a graduated survey rod or measuring stick with a 30cm disc affixed to the top of the measuring tool.  An imagery cylinder ​extends ​from the disc's circumference to the ground. ​ The highest point of any plant (living or dead) that falls within ​this cylinder ​is recorded. ​ Woody and/or herbaceous plants are differentiated. ​  If both woody and herbaceous plants are present ​underneath ​the disc, the tallest of each type of plant is recorded. ​ If no plants are present, a value of "​0"​ is recorded. ​ Transects are established at regular intervals (5m is recommended) with a minimum of 30 height measurements per plot.  ​ 
 + 
 +{{:​field_methods:​veg_height_2a.png}} \\ 
 +** Example plots. ​ The black silhouette represents a woody species and the grey silhouette represents an herbaceous species. ** \\
  
 Once the data is collected, an average height of all species is calculated as well as an average height of woody species and herbaceous species. ​ Values of 0 (no vegetation present) can be discarded when calculating average heights if desired. Once the data is collected, an average height of all species is calculated as well as an average height of woody species and herbaceous species. ​ Values of 0 (no vegetation present) can be discarded when calculating average heights if desired.
field_methods/vegetation_plant_height.txt · Last modified: 2014/02/09 15:21 by jgh